condition mean min max 0 h after light 3.422435 3.23175 3.61312 4 h after light 2.580705 2.2352 2.92621 8 h after light 2.134145 1.97032 2.29797 4 h after dark 6.285585 6.23449 6.33668 8 h after dark 4.210515 3.97294 4.44809 12 h after dark 4.202075 3.866 4.53815