Consecutive frost days index per time period
ecacfd.Rd
Let infile be a time series of the daily minimum temperature TN, then the largest number of consecutive days where TN < 0 °C is counted. Note that TN have to be given in units of Kelvin. A further output variable is the number of frost periods of more than N days. The date information of a timestep in outfile is the date of the last contributing timestep in infile.