condition mean min max 0 h after light 8.920295 8.00212 9.83847 2 h after light 6.160495 6.01728 6.30371 4 h after light 6.557625 5.77889 7.33636 8 h after light 5.14781 4.12391 6.17171 12 h after light 6.57141 5.69739 7.44543 2 h after dark 7.36289 7.02473 7.70105 4 h after dark 6.80363 6.09476 7.5125 8 h after dark 8.825420000000001 8.82371 8.82713 12 h after dark 9.114605000000001 8.74021 9.489