condition mean min max 0 h after light 9.049655 8.09751 10.0018 2 h after light 8.852525 8.70962 8.99543 4 h after light 5.49603 4.92956 6.0625 8 h after light 5.708905 4.66544 6.75237 12 h after light 8.380455 7.68645 9.07446 2 h after dark 10.17487 9.73164 10.6181 4 h after dark 9.09547 9.09354 9.0974 8 h after dark 11.350999999999999 10.9097 11.7923 12 h after dark 11.20285 10.8505 11.5552