condition mean min max 4 h after light 10.53405 10.3526 10.7155 8 h after light 7.61346 7.59648 7.63044 12 h after light 3.811815 3.66799 3.95564 4 h after dark 5.817374999999999 3.52559 8.10916 8 h after dark 4.33354 4.06372 4.60336 12 h after dark 7.77518 6.97738 8.57298