curramps data format:

    YYYYMMDD HHMMSS AA.AAA BB.BBB CC.CCC DD.DDD

    where YYYYMMDD = Date as year, month, day
          HHMMSS   = Time as hour, minute, second
          AA.AAA   = Current 1, amps = Solar Panel Current
          BB.BBB   = Current 2, amps = Battery Current, negative = charging battery
          CC.CCC   = Current 3, amps = Buoy Current
          DD.DDD   = Current 4, amps = Underwater Hub Current