condition mean min max 0 h after light 3.40443 3.08226 3.7266 4 h after light 3.960745 3.84233 4.07916 8 h after light 5.421735 5.39783 5.44564 4 h after dark 5.9093800000000005 5.9036 5.91516 8 h after dark 4.643095000000001 4.53601 4.75018 12 h after dark 3.968695 3.71497 4.22242