condition mean min max 3 h after light 3.3228633333333333 3.02907 3.81324 6 h after light 13.3476 10.9531 14.67 9 h after light 21.1297 20.0866 22.9726 12 h after light 13.1653355 0.135942 20.8078 3 h after dark 6.823533333333334 6.06953 7.74113 6 h after dark 1.3315796666666666 0.723749 1.67507 9 h after dark 0.6497930000000001 0.435914 1.05282 12 h after dark 0.231973 0.130008 0.333938