the suitability of a location (grid cell) for a crop is evaluated for each of the 12 potential growing seasons. if the averahe minimum temperature in one of these months is 4 c or less above KTMP, it is assumed that, on average, KTMP will be reached on one day of the month, and the crop will die. the temperature suitability of that month is thus 0%. if this is not the case, the temperature suitability is evaluated for that month using the other temperature suitability of a grid cell for a crop, for any growing season, is the lowest suitability score for any of the consecutive number of months needed to complete the growing season.