GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 359, Approximate Location: 42.21 N. Latitude, 83.10 W. Longitude Site Name Detroit River on Detroit River ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1900 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 004.TIF CASS STREET TO LAKE ERIE 1900 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 005.TIF L. ST. CLAIR TO SANDWICH POINT 1900 3 20 -1 -1 RI -1 -1 -1 -1 -1 -1 006.TIF 1901 3 5 -1 -1 BK -1 -1 NI -1 -1 RF -1 -1 011.TIF CHANNELS (CUT) 1901 3 12 -1 -1 DI -1 -1 -1 -1 -1 -1 012.TIF DOWN TO SANDWICH PT. 1901 3 12 -1 -1 SO -1 -1 -1 -1 -1 -1 012.TIF BELOW SANDWICH POINT 1901 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 013.TIF LAKE: TO SMITH'S COAL DOCK 1902 3 4 -1 -1 LI -1 -1 RI -1 -1 -1 -1 019.TIF 1902 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 021.TIF 1902 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 022.TIF 1903 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 024.TIF TO BELOW SANDWICH POINT 1903 3 10 -1 -1 RI -1 -1 -1 -1 -1 -1 025.TIF 1904 3 1 -1 -1 OW -1 -1 -1 -1 -1 -1 029.TIF TO SANDWICH POINT 1904 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 030.TIF BELOW SMITH'S COAL DOCK 1904 3 15 -1 -1 RI -1 -1 -1 -1 -1 -1 031.TIF 1904 3 22 -1 -1 RI -1 -1 -1 -1 -1 -1 032.TIF TO LAKE ERIE 1904 3 29 -1 -1 RI -1 -1 -1 -1 -1 -1 033.TIF 1905 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 039.TIF TO BELOW SANDWICH POINT 1905 3 14 -1 -1 RI -1 -1 -1 -1 -1 -1 040.TIF 1905 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 041.TIF 1905 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 042.TIF 1906 3 27 -1 -1 RI -1 -1 -1 -1 -1 -1 048.TIF 1907 3 5 -1 -1 RI -1 -1 -1 -1 -1 -1 051.TIF LAKE: TO SMITH'S COAL DOCK 1907 3 12 -1 -1 RI -1 -1 -1 -1 -1 -1 052.TIF 1907 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 053.TIF ENTIRE LENGTH 1907 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 055.TIF 1907 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 056.TIF 1908 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 057.TIF TO FOOT OF THIRD STREET 1908 3 3 -1 -1 IP -1 -1 -1 -1 -1 -1 057.TIF BELOW FOOT OF THIRD STREET 1908 3 10 -1 -1 RI -1 -1 -1 -1 -1 -1 058.TIF DETROIT TO MOUTH OF RIVER 1908 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 059.TIF 1908 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 060.TIF TO THE MOUTH 1908 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 524.TIF 1908 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 061.TIF 1909 3 9 -1 -1 RI -1 -1 -1 -1 -1 -1 065.TIF TO LAKE ERIE 1909 3 16 -1 -1 IJ -1 -1 -1 -1 -1 -1 066.TIF HEAD OF FIGHTING ISLAND 1909 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 066.TIF MAIN CHANNEL TO MOUTH 1909 3 23 -1 -1 RI -1 -1 -1 -1 -1 -1 067.TIF 1910 3 1 -1 -1 SO -1 -1 -1 -1 -1 -1 071.TIF 24TH STREET TO LAKE ERIE 1910 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 072.TIF ENTIRE LENGTH 1910 3 15 -1 -1 RI -1 -1 -1 -1 -1 -1 073.TIF 1910 3 22 -1 -1 RI -1 -1 -1 -1 -1 -1 074.TIF 1910 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 075.TIF 1910 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 076.TIF 1911 3 7 -1 -1 RI -1 -1 -1 -1 -1 -1 077.TIF 1911 3 14 -1 -1 RI -1 -1 -1 -1 -1 -1 078.TIF 1911 3 21 -1 -1 RI -1 -1 -1 -1 -1 -1 079.TIF 1912 3 5 -1 -1 IP -1 -1 -1 -1 -1 -1 082.TIF SANDWICH PT. TO MOUTH OF RIVER 1912 3 5 -1 -1 RI -1 -1 -1 -1 -1 -1 082.TIF BELLE ISLE TO SANDWICH PT. 1912 3 12 -1 -1 SO -1 -1 -1 -1 -1 -1 083.TIF SANDWICH POINT TO LAKE ERIE 1912 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 083.TIF TO SANDWICH POINT 1912 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 084.TIF MOUTH OF LAKE TO SANDWICH PT. 1912 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 084.TIF LIME KILNS 1912 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 084.TIF BALLARDS REEF 1912 3 19 -1 -1 IP -1 -1 -1 -1 -1 -1 084.TIF MOUTH OF RIVER 1912 3 26 -1 -1 OW -1 -1 RI -1 -1 -1 -1 085.TIF TO BOIS BLANC ISLAND 1912 3 26 -1 -1 IP -1 -1 -1 -1 -1 -1 085.TIF MOUTH 1912 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 086.TIF MOUTH 1912 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 086.TIF BEYOND BAR POINT LIGHT 1912 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 087.TIF TO LAKE ERIE 1912 4 23 -1 -1 OW -1 -1 -1 -1 -1 -1 089.TIF 1913 3 4 -1 -1 OW -1 -1 RI -1 -1 -1 -1 090.TIF L. ST. CLAIR TO SANDWICH POINT 1913 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 092.TIF RIVER MOUTH 1913 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 093.TIF 1913 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 094.TIF 1913 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 095.TIF 1913 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 096.TIF 1913 4 22 -1 -1 OW -1 -1 -1 -1 -1 -1 097.TIF 1914 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 098.TIF MOUTH OF LAKE TO 3RD STREET 1914 3 3 -1 -1 IP -1 -1 -1 -1 -1 -1 098.TIF BELOW 3RD STREET 1914 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 099.TIF TO SANDWICH POINT 1914 3 10 -1 -1 SO -1 -1 -1 -1 -1 -1 099.TIF SANDWICH POINT TO MOUTH 1914 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 100.TIF TO LAKE ERIE 1914 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 101.TIF 1914 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 105.TIF 1915 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 106.TIF TO LAKE ERIE 1915 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 108.TIF 1915 4 6 -1 -1 RI -1 -1 -1 -1 -1 -1 110.TIF 1915 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 111.TIF 1915 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 112.TIF 1916 3 7 -1 -1 SO -1 -1 -1 -1 -1 -1 113.TIF SANDWICH POINT TO LAKE ERIE 1916 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 114.TIF TO FIGHTING ISLAND 1916 3 14 -1 -1 SO -1 -1 -1 -1 -1 -1 114.TIF TO HEAD OF BOIS BLANC ISLAND 1916 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 115.TIF LAKE ST. CLAIR TO WYANDOTTE 1916 3 21 -1 -1 RI -1 -1 BK -1 -1 -1 -1 115.TIF WYANDOTTE TO BOIS BLANC ISLAND 1916 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 116.TIF TO LAKE ERIE 1916 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 117.TIF TO LAKE ERIE 1916 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 118.TIF 1916 4 18 -1 -1 IP -1 -1 -1 -1 -1 -1 119.TIF 1917 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 120.TIF TO BELOW FIGHTING ISLAND 1917 3 6 -1 -1 RI -1 -1 -1 -1 -1 -1 120.TIF 1917 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 121.TIF TO BELOW BOIS BLANC ISLAND 1917 3 13 -1 -1 FD -1 -1 -1 -1 -1 -1 121.TIF BEYOND BOIS BLANC ISLAND 1917 3 20 -1 -1 RI -1 -1 BK -1 -1 -1 -1 122.TIF 1917 3 27 -1 -1 RI -1 -1 -1 -1 -1 -1 123.TIF 1917 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 124.TIF 1917 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 126.TIF 1917 4 24 -1 -1 OW -1 -1 -1 -1 -1 -1 127.TIF 1918 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 128.TIF TO LAKE ERIE 1918 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 129.TIF 1918 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 130.TIF 1918 3 26 -1 -1 IJ -1 -1 -1 -1 -1 -1 131.TIF MOUTH OF LAKE 1918 3 26 -1 -1 RI -1 -1 -1 -1 -1 -1 131.TIF 1918 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 134.TIF 1918 4 23 -1 -1 OW -1 -1 -1 -1 -1 -1 135.TIF 1919 3 4 -1 -1 RI -1 -1 LI -1 -1 -1 -1 136.TIF 1919 3 11 -1 -1 RI -1 -1 -1 -1 -1 -1 137.TIF 1919 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 138.TIF TO LAKE ERIE 1919 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 139.TIF 1920 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 140.TIF TO THE FOOT OF 3RD STREET 1920 3 9 -1 -1 IP -1 -1 -1 -1 -1 -1 140.TIF FOOT OF 3RD STREET TO L. ERIE 1920 3 16 -1 -1 OW -1 -1 RI -1 -1 -1 -1 141.TIF TO LAKE ERIE 1920 3 23 -1 -1 RI -1 -1 -1 -1 -1 -1 142.TIF 1920 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 144.TIF 1920 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 145.TIF 1921 3 8 -1 -1 RI -1 -1 -1 -1 -1 -1 146.TIF 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF 1922 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 149.TIF TO LAKE ERIE 1922 3 14 -1 -1 RI -1 -1 -1 -1 -1 -1 150.TIF 1922 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 151.TIF 1922 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 152.TIF 1922 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 153.TIF 1922 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 154.TIF 1923 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 155.TIF TO LAKE ERIE 1923 3 13 -1 -1 RI -1 -1 -1 -1 -1 -1 156.TIF 1923 3 20 -1 -1 RI -1 -1 -1 -1 -1 -1 157.TIF 1923 3 27 -1 -1 RI -1 -1 -1 -1 -1 -1 158.TIF 1923 4 3 -1 -1 RI -1 -1 -1 -1 -1 -1 159.TIF 1923 4 10 -1 -1 RI -1 -1 -1 -1 -1 -1 160.TIF 1923 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 161.TIF 1923 4 24 -1 -1 OW -1 -1 -1 -1 DI -1 -1 162.TIF 1924 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 163.TIF NEARLY DOWN TO FIGHTING ISLAND 1924 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 164.TIF TO LAKE ERIE 1924 3 18 -1 -1 RI -1 -1 -1 -1 -1 -1 165.TIF TO LAKE ERIE 1924 3 25 -1 -1 RI -1 -1 -1 -1 -1 -1 166.TIF 1924 4 1 -1 -1 RI -1 -1 -1 -1 -1 -1 167.TIF 1924 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 168.TIF 1924 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 169.TIF 1924 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 170.TIF 1925 3 17 -1 -1 RI -1 -1 -1 -1 -1 -1 171.TIF 1925 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 172.TIF 1925 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 173.TIF 1925 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 174.TIF 1925 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 175.TIF 1926 3 9 -1 -1 RI -1 -1 -1 -1 -1 -1 177.TIF 1926 3 16 -1 -1 RI -1 -1 -1 -1 -1 -1 178.TIF 1926 3 23 -1 -1 LI -1 -1 RI -1 -1 -1 -1 179.TIF 1926 3 30 -1 -1 LI -1 -1 -1 -1 -1 -1 180.TIF 1926 4 5 -1 -1 RI -1 -1 -1 -1 -1 -1 181.TIF 1926 4 13 -1 -1 RI -1 -1 -1 -1 -1 -1 182.TIF 1926 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 183.TIF 1926 4 27 -1 -1 OW -1 -1 -1 -1 -1 -1 184.TIF 1927 3 8 -1 -1 RI -1 -1 LI -1 -1 -1 -1 185.TIF 1927 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 187.TIF 1927 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 188.TIF 1927 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 189.TIF 1928 3 13 -1 -1 RI -1 -1 -1 -1 -1 -1 191.TIF 1928 3 20 -1 -1 RI -1 -1 -1 -1 -1 -1 192.TIF 1928 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 194.TIF 1928 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 195.TIF 1929 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 196.TIF 1929 3 12 -1 -1 RI -1 -1 -1 -1 -1 -1 197.TIF 1929 3 19 -1 -1 RI -1 -1 -1 -1 -1 -1 198.TIF 1929 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 199.TIF 1929 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 200.TIF 1929 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 201.TIF 1930 3 4 -1 -1 RI -1 -1 -1 -1 -1 -1 202.TIF 1930 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 204.TIF 1930 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 205.TIF 1930 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 206.TIF 1930 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 207.TIF 1930 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 208.TIF 1931 3 3 -1 -1 RI -1 -1 -1 -1 -1 -1 209.TIF 1931 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 210.TIF 1931 3 17 -1 -1 RI -1 -1 -1 -1 -1 -1 211.TIF 1931 3 24 -1 -1 RI -1 -1 -1 -1 -1 -1 212.TIF 1931 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 213.TIF 1931 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 214.TIF 1932 3 8 -1 -1 RI -1 -1 -1 -1 -1 -1 215.TIF 1932 3 15 -1 -1 PI -1 -1 -1 -1 -1 -1 216.TIF LOWER END 1932 3 22 -1 -1 LI -1 -1 -1 -1 -1 -1 217.TIF 1932 3 29 -1 -1 RI -1 -1 -1 -1 -1 -1 525.TIF 1932 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 218.TIF 1932 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 219.TIF 1933 3 7 -1 -1 LI -1 -1 DI -1 -1 -1 -1 220.TIF 1933 3 14 -1 -1 RI -1 -1 -1 -1 -1 -1 221.TIF 1933 3 21 -1 -1 LI -1 -1 -1 -1 -1 -1 222.TIF 1933 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 223.TIF 1933 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 224.TIF 1933 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 225.TIF 1933 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 226.TIF 1934 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 228.TIF 1934 3 20 -1 -1 LI -1 -1 RI -1 -1 -1 -1 230.TIF 1934 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 231.TIF BELLE ISLE TO MOUTH 1934 3 27 -1 -1 PN -1 -1 -1 -1 -1 -1 231.TIF UPPER RIVER 1934 4 3 -1 -1 RI -1 -1 -1 -1 -1 -1 232.TIF 1934 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 234.TIF 1934 4 24 -1 -1 OW -1 -1 -1 -1 -1 -1 235.TIF 1935 3 5 8 10 -1 -1 -1 -1 -1 -1 237.TIF LOWER RIVER 1935 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 237.TIF DOWNTOWN DETROIT 1935 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 238.TIF 1935 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 239.TIF 1935 3 26 -1 -1 RI -1 -1 -1 -1 -1 -1 240.TIF 1935 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 241.TIF 1935 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 242.TIF 1935 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 243.TIF 1936 3 10 -1 -1 RI -1 -1 -1 -1 -1 -1 244.TIF 1936 3 17 -1 -1 RI -1 -1 -1 -1 -1 -1 245.TIF 1936 3 23 -1 -1 RI -1 -1 -1 -1 -1 -1 246.TIF 1936 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 247.TIF 1936 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 248.TIF 1936 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 249.TIF 1936 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 250.TIF 1936 4 27 -1 -1 OW -1 -1 -1 -1 -1 -1 251.TIF 1937 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 254.TIF 1937 3 15 -1 -1 RI -1 -1 -1 -1 -1 -1 255.TIF 1937 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 256.TIF 1937 3 29 -1 -1 LI -1 -1 -1 -1 -1 -1 257.TIF 1937 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 258.TIF 1937 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 259.TIF 1938 3 14 -1 -1 RI -1 -1 -1 -1 -1 -1 262.TIF 1938 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 263.TIF 1938 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 264.TIF 1938 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 265.TIF 1938 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 266.TIF 1938 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 267.TIF 1939 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 268.TIF 1939 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 269.TIF 1939 3 20 2 4 SO -1 -1 WI -1 -1 -1 -1 270.TIF LOWER RIVER 1939 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 271.TIF 1939 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 272.TIF 1939 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 273.TIF 1939 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 274.TIF 1939 4 24 -1 -1 OW -1 -1 -1 -1 -1 -1 275.TIF 1939 5 1 -1 -1 OW -1 -1 -1 -1 -1 -1 276.TIF 1940 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 277.TIF LAKE ST. CLAIR TO NEAR MOUTH 1940 3 4 -1 -1 IP -1 -1 WI -1 -1 -1 -1 277.TIF DETROIT RIVER LIGHT 1940 3 4 12 18 -1 -1 -1 -1 -1 -1 277.TIF MOUTH TO MAUMEE RIVER 1940 3 11 -1 -1 DI -1 -1 -1 -1 -1 -1 278.TIF L. ST. CLAIR TO PEACH ISLAND 1940 3 11 -1 -1 RI -1 -1 -1 -1 -1 -1 278.TIF NEAR DETROIT 1940 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 279.TIF EXCEPT FOR LOWER END 1940 3 18 -1 -1 FD -1 -1 RI -1 -1 -1 -1 279.TIF LOWER END 1940 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 280.TIF EXCEPT FOR LOWER PORTION 1940 3 24 -1 -1 FD -1 -1 RI -1 -1 -1 -1 280.TIF LOWER PORTION 1940 4 1 -1 -1 RI -1 -1 -1 -1 -1 -1 281.TIF 1940 4 8 -1 -1 LI -1 -1 RI -1 -1 -1 -1 282.TIF 1940 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 283.TIF 1940 4 22 -1 -1 OW -1 -1 -1 -1 -1 -1 284.TIF 1941 3 3 -1 -1 RI -1 -1 -1 -1 -1 -1 285.TIF 1941 3 3 8 14 SO -1 -1 WI -1 -1 -1 -1 285.TIF LOWER PART & L. ERIE ENTRANCE 1941 3 10 -1 -1 LF -1 -1 RI -1 -1 -1 -1 286.TIF 1941 3 17 -1 -1 RI -1 -1 -1 -1 -1 -1 287.TIF 1941 3 17 -1 -1 DI -1 -1 -1 -1 -1 -1 287.TIF PEACHE ISLAND DOWN 1941 3 24 -1 -1 RI -1 -1 -1 -1 -1 -1 288.TIF 1941 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 288.TIF LOWER RIVER 1941 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 289.TIF 1941 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 290.TIF 1942 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 292.TIF PEACHE LT. TO DETROIT R. LT. 1942 3 16 -1 -1 IJ -1 -1 -1 -1 -1 -1 293.TIF MICHIGAN ALKALI 1942 3 16 -1 -1 IJ -1 -1 -1 -1 -1 -1 293.TIF UPPER END: LIVINGSTONE CHANNEL 1942 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 294.TIF 1942 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 295.TIF 1943 3 8 -1 -1 RI -1 -1 -1 -1 -1 -1 299.TIF DOWNTOWN DETROIT 1943 3 8 4 -1 SO -1 -1 -1 -1 -1 -1 299.TIF LOWER RIVER 1943 3 8 -1 -1 SW -1 -1 -1 -1 -1 -1 299.TIF LIVINGSTONE CHANNEL 1943 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 300.TIF MAIN CHANNEL TO BOBLO ISLAND 1943 3 15 -1 -1 SO -1 -1 -1 -1 -1 -1 300.TIF LIVINGSTONE CHANNEL 1943 3 15 -1 -1 IP -1 -1 SW -1 -1 -1 -1 300.TIF DOWNTOWN DETROIT 1943 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 301.TIF 1943 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 302.TIF 1943 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 303.TIF 1943 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 304.TIF 1943 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 305.TIF 1943 4 26 -1 -1 OW -1 -1 -1 -1 -1 -1 306.TIF 1944 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 308.TIF 1944 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 309.TIF 1944 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 309.TIF MOUTH OF RIVER 1944 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 310.TIF 1944 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 311.TIF 1944 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 312.TIF 1944 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 313.TIF 1944 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 314.TIF 1945 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 315.TIF 1945 3 19 -1 -1 IP -1 -1 -1 -1 -1 -1 315.TIF TO PELEE POINT (ALONG SHORE) 1945 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 316.TIF 1946 3 4 -1 -1 RI -1 -1 DI -1 -1 -1 -1 318.TIF 1946 3 11 -1 -1 LI -1 -1 -1 -1 -1 -1 319.TIF 1946 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 320.TIF 1946 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 321.TIF 1946 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 322.TIF 1947 2 19 -1 -1 OW -1 -1 -1 -1 -1 -1 324.TIF 1947 2 19 -1 -1 DI -1 -1 RI -1 -1 -1 -1 325.TIF 1947 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 326.TIF 1947 3 3 6 8 SO -1 -1 -1 -1 -1 -1 326.TIF BALLARD REEF 1947 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 326.TIF LIVINGSTONE CHANNEL 1947 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 327.TIF TO DETROIT RIVER LIGHT 1947 3 17 -1 -1 DI -1 -1 NI -1 -1 -1 -1 328.TIF 1947 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 329.TIF 1947 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 330.TIF 1947 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 331.TIF 1947 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 332.TIF 1947 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 333.TIF 1948 3 1 -1 -1 LI -1 -1 -1 -1 -1 -1 334.TIF 1948 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 335.TIF 1948 3 15 -1 -1 LI -1 -1 -1 -1 -1 -1 336.TIF 1948 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 336.TIF LOWER RIVER 1948 3 22 -1 -1 SI -1 -1 RI -1 -1 -1 -1 337.TIF 1948 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 338.TIF 1948 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 339.TIF 1949 2 28 -1 -1 OW -1 -1 -1 -1 -1 -1 527.TIF 1949 3 7 -1 -1 NI -1 -1 DI -1 -1 -1 -1 342.TIF 1949 3 14 -1 -1 LI -1 -1 RI -1 -1 -1 -1 344.TIF 1949 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 347.TIF 1950 2 16 -1 -1 LF -1 -1 DI -1 -1 -1 -1 348.TIF 1950 2 27 -1 -1 RI -1 -1 -1 -1 -1 -1 349.TIF 1950 3 6 -1 -1 LF -1 -1 DI -1 -1 -1 -1 350.TIF TO FIGHTING ISLAND 1950 3 6 -1 -1 IJ -1 -1 -1 -1 -1 -1 350.TIF FIGHTING ISLAND TO LIVINGSTONE 1950 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 350.TIF LIMEKILN CROSSING 1950 3 13 -1 -1 LI -1 -1 -1 -1 -1 -1 351.TIF 1950 3 20 -1 -1 RI -1 -1 -1 -1 -1 -1 352.TIF (50% ICE COVER) 1950 3 27 -1 -1 HF -1 -1 RT -1 -1 RI -1 -1 353.TIF 1950 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 354.TIF 1950 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 355.TIF 1950 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 356.TIF 1950 4 24 -1 -1 OW -1 -1 -1 -1 -1 -1 357.TIF 1951 2 26 -1 -1 LF -1 -1 SI -1 -1 -1 -1 359.TIF 1951 3 5 -1 -1 LI -1 -1 -1 -1 -1 -1 360.TIF 1951 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 361.TIF 1951 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 362.TIF 1951 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 363.TIF 1951 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 364.TIF 1951 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 365.TIF 1952 2 25 -1 -1 LF -1 -1 RI -1 -1 -1 -1 367.TIF STEAMER CHANNELS 1952 2 25 -1 -1 LF -1 -1 DI -1 -1 -1 -1 367.TIF TO PELEE ISLAND 1952 3 3 -1 -1 DI -1 -1 -1 -1 -1 -1 368.TIF LIVINGSTONE CHANNEL 1952 3 10 -1 -1 LI -1 -1 -1 -1 -1 -1 369.TIF 1952 3 17 -1 -1 RI -1 -1 -1 -1 -1 -1 370.TIF 1952 4 7 -1 -1 LI -1 -1 -1 -1 -1 -1 373.TIF 1953 2 24 -1 -1 LF -1 -1 PN -1 -1 RI -1 -1 375.TIF 1953 3 2 -1 -1 LF -1 -1 DI -1 -1 NI -1 -1 528.TIF 1953 3 9 3 -1 NI -1 -1 PN -1 -1 -1 -1 376.TIF 1953 3 16 -1 -1 LI -1 -1 -1 -1 -1 -1 378.TIF 1953 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 379.TIF 1954 3 1 -1 -1 RT -1 -1 PN -1 -1 -1 -1 381.TIF 1954 3 8 -1 -1 LI -1 -1 DI -1 -1 -1 -1 382.TIF 1954 3 15 -1 -1 LI -1 -1 -1 -1 -1 -1 383.TIF 1954 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 384.TIF 1954 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 385.TIF 1954 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 386.TIF 1954 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 387.TIF 1955 2 28 -1 -1 RI -1 -1 -1 -1 -1 -1 389.TIF 1955 3 7 -1 -1 DI -1 -1 NI -1 -1 -1 -1 391.TIF 1955 3 14 -1 -1 LI -1 -1 -1 -1 -1 -1 393.TIF 1955 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 394.TIF 1955 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 395.TIF 1956 2 27 -1 -1 LI -1 -1 LF -1 -1 NI -1 -1 397.TIF 1956 3 19 -1 -1 RI -1 -1 -1 -1 -1 -1 402.TIF 1956 3 26 -1 -1 DI -1 -1 RT -1 -1 PN -1 -1 403.TIF CHANNELS 1956 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 405.TIF 1956 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 406.TIF 1957 2 25 -1 -1 OW -1 -1 -1 -1 -1 -1 408.TIF 1957 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 410.TIF LOWER RIVER 1957 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 409.TIF 1957 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 411.TIF 1957 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 413.TIF 1957 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 414.TIF 1958 2 24 -1 -1 DI -1 -1 RI -1 -1 -1 -1 416.TIF BELLE ISLE TO AMBASSADOR BR. 1958 2 24 -1 -1 OW -1 -1 -1 -1 -1 -1 416.TIF TRENTON CHANNEL 1958 2 24 10 -1 SW -1 -1 -1 -1 -1 -1 416.TIF LIVINGSTONE CHANNEL 1958 3 10 -1 -1 LI -1 -1 -1 -1 -1 -1 418.TIF 1958 3 17 -1 -1 LI -1 -1 -1 -1 -1 -1 419.TIF 1958 3 24 -1 -1 LI -1 -1 -1 -1 -1 -1 420.TIF 1958 3 31 -1 -1 LI -1 -1 -1 -1 -1 -1 421.TIF 1958 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 422.TIF 1959 3 2 -1 -1 LF -1 -1 RI -1 -1 -1 -1 424.TIF BELLE ISLE TO MOUTH 1959 3 9 -1 -1 DI -1 -1 PN -1 -1 -1 -1 425.TIF 1959 3 16 -1 -1 PN -1 -1 SW -1 -1 -1 -1 426.TIF (60% ICE COVER) 1959 3 23 -1 -1 LI -1 -1 -1 -1 -1 -1 427.TIF 1959 3 30 -1 -1 LI -1 -1 RT -1 -1 PN -1 -1 429.TIF 1959 4 6 -1 -1 LI -1 -1 -1 -1 -1 -1 430.TIF 1959 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 431.TIF 1960 2 19 -1 -1 OW -1 -1 -1 -1 -1 -1 523.TIF ENTIRE LENGTH 1960 2 29 8 -1 FD -1 -1 DI -1 -1 -1 -1 522.TIF FIGHTING ISLAND CHANNEL 1960 2 29 -1 -1 OW -1 -1 -1 -1 -1 -1 522.TIF LIVINGSTONE CHANNEL 1960 3 7 -1 -1 DI -1 -1 RI -1 -1 -1 -1 434.TIF LIVINGSTONE CHANNEL 1960 3 21 -1 -1 LI -1 -1 -1 -1 -1 -1 436.TIF 1960 3 28 -1 -1 DI -1 -1 PN -1 -1 -1 -1 437.TIF 1960 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 437.TIF LIVINGSTONE CHANNEL 1960 4 4 -1 -1 SI -1 -1 RI -1 -1 -1 -1 438.TIF (75% ICE COVER) 1960 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 439.TIF 1961 2 27 -1 -1 OW -1 -1 -1 -1 -1 -1 440.TIF 1961 3 6 -1 -1 RT -1 -1 RI -1 -1 -1 -1 441.TIF 1961 3 13 -1 -1 RT -1 -1 DI -1 -1 -1 -1 442.TIF 1961 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 443.TIF 1961 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 444.TIF 1961 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 445.TIF 1961 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 446.TIF 1962 2 26 -1 -1 OW -1 -1 -1 -1 -1 -1 447.TIF CHANNELS TO RIVER LIGHT 1962 3 5 -1 -1 RI -1 -1 -1 -1 -1 -1 448.TIF 1962 3 12 -1 -1 LF -1 -1 DI -1 -1 -1 -1 449.TIF 1962 3 19 -1 -1 LI -1 -1 -1 -1 -1 -1 450.TIF 1962 3 26 -1 -1 LI -1 -1 -1 -1 -1 -1 451.TIF 1962 4 2 -1 -1 LI -1 -1 -1 -1 -1 -1 452.TIF 1962 4 9 -1 -1 LI -1 -1 -1 -1 -1 -1 453.TIF 1962 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 454.TIF 1963 2 25 -1 -1 OW -1 -1 -1 -1 -1 -1 456.TIF CHANNELS 1963 3 4 -1 -1 LF -1 -1 DI -1 -1 -1 -1 457.TIF 1963 3 11 -1 -1 LF -1 -1 RI -1 -1 -1 -1 458.TIF 1963 3 18 -1 -1 LI -1 -1 LF -1 -1 DI -1 -1 459.TIF 1963 3 25 -1 -1 LI -1 -1 LF -1 -1 DI -1 -1 460.TIF 1963 4 1 -1 -1 LI -1 -1 -1 -1 -1 -1 461.TIF 1963 4 8 -1 -1 LI -1 -1 -1 -1 -1 -1 462.TIF 1963 4 15 -1 -1 LI -1 -1 -1 -1 -1 -1 463.TIF 1964 2 24 6 -1 LF -1 -1 DI -1 -1 -1 -1 465.TIF 1964 3 2 6 -1 LF -1 -1 DI -1 -1 -1 -1 466.TIF 1964 3 9 -1 -1 LI -1 -1 -1 -1 -1 -1 467.TIF 1964 3 9 -1 -1 LF -1 -1 SI -1 -1 -1 -1 467.TIF WINDMILL PT. TO WALKERVILLE 1964 3 16 -1 -1 LI -1 -1 DI -1 -1 -1 -1 468.TIF 1964 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 469.TIF 1964 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 470.TIF 1964 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 471.TIF 1964 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 472.TIF 1965 2 23 -1 -1 LF -1 -1 DI -1 -1 -1 -1 473.TIF 1965 3 1 -1 -1 RI -1 -1 SC -1 -1 -1 -1 474.TIF 1965 3 8 -1 -1 DI -1 -1 PN -1 -1 RT -1 -1 475.TIF 1965 3 15 -1 -1 LF -1 -1 RT -1 -1 PN -1 -1 476.TIF 1965 3 22 -1 -1 HF -1 -1 RI -1 -1 NI -1 -1 477.TIF 1965 3 29 -1 -1 DI -1 -1 PN -1 -1 -1 -1 478.TIF 1965 3 29 -1 -1 FS -1 -1 -1 -1 -1 -1 478.TIF ALONG CANADIAN SHORE 1965 4 5 -1 -1 DI -1 -1 PN -1 -1 -1 -1 479.TIF 1965 4 12 -1 -1 LI -1 -1 -1 -1 -1 -1 480.TIF 1965 4 19 -1 -1 LI -1 -1 -1 -1 -1 -1 481.TIF 1966 2 28 4 14 -1 -1 -1 -1 -1 -1 483.TIF ALONG SHORE 1966 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 484.TIF 1966 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 485.TIF 1966 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 486.TIF 1966 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 487.TIF 1966 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 488.TIF 1967 2 27 -1 -1 DI -1 -1 -1 -1 -1 -1 489.TIF 1967 3 6 -1 -1 IJ -1 -1 -1 -1 -1 -1 490.TIF LOWER RIVER 1967 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 491.TIF EXCEPT IN AMHERSTBURG CHANNEL 1967 3 20 4 6 DI -1 -1 PN -1 -1 SW -1 -1 492.TIF 1967 3 27 4 6 DI -1 -1 PN -1 -1 SW -1 -1 493.TIF 1967 4 3 -1 -1 LF -1 -1 DI -1 -1 -1 -1 494.TIF 1967 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 495.TIF 1968 2 26 -1 -1 WI -1 -1 -1 -1 -1 -1 521.TIF N OF FIGHTING ISLAND 1968 3 4 -1 -1 PN -1 -1 -1 -1 -1 -1 520.TIF 1968 3 11 -1 -1 LI -1 -1 RI -1 -1 -1 -1 497.TIF 1968 3 18 4 6 PN -1 -1 RI -1 -1 SW -1 -1 498.TIF 1968 3 25 -1 -1 LF -1 -1 RI -1 -1 -1 -1 499.TIF 1968 4 1 -1 -1 LF -1 -1 PN -1 -1 -1 -1 500.TIF 1968 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 501.TIF 1968 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 502.TIF 1969 2 24 -1 -1 LF -1 -1 DI -1 -1 -1 -1 503.TIF 1969 3 3 -1 -1 LF -1 -1 DI -1 -1 -1 -1 504.TIF 1969 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 505.TIF 1969 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 506.TIF 1969 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 507.TIF 1969 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 508.TIF 1969 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 509.TIF 1969 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 510.TIF 1970 2 24 -1 -1 IP -1 -1 -1 -1 -1 -1 519.TIF 1970 3 24 -1 -1 DI -1 -1 -1 -1 -1 -1 513.TIF 1970 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 514.TIF 1970 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 515.TIF 1970 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 516.TIF 1970 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 517.TIF ---------------------------------------------------------------------------------------------------------- Ice thickness is in inches, -1 = no thickness reported, see report for ice conditon codes. T1 = ice thickness or part of a range if T2 is present, C1 = primary condtion of ice. T1C1 = thickness of C1 or part of range if T2C1 is presnet. C2, T1C2, T2C2, C3, T1C3, T2C3 are secondary and ternary ice conditon and condition thickness.