condition mean min max 4 h after light 12.3559275 11.920302 12.791553 8 h after light 13.7244065 13.205414 14.243399 12 h after light 14.7358855 14.243399 15.228372 4 h after dark 16.091011 15.631754 16.550268 8 h after dark 16.203727 15.183244 17.22421 12 h after dark 12.359957 12.359957 12.359957