condition mean min max 3 h after light 6.314236666666666 5.54979 7.79334 6 h after light 6.831453333333333 5.62277 8.39211 9 h after light 5.05478 4.20179 5.78212 12 h after light 6.344945 5.13997 7.78272 3 h after dark 6.55004 5.78862 7.57629 6 h after dark 8.872386666666666 8.19062 9.50577 9 h after dark 7.93165 6.69524 9.48226 12 h after dark 7.63452 5.83546 9.43358