condition mean min max 0 h after light 5.694965 5.36911 6.02082 2 h after light 5.180365 4.3328 6.02793 4 h after light 7.36889 7.23658 7.5012 8 h after light 9.181765 7.23913 11.1244 12 h after light 19.8527 18.8119 20.8935 2 h after dark 17.6814 16.8608 18.502 4 h after dark 12.805499999999999 12.6404 12.9706 8 h after dark 8.157155 7.92679 8.38752 12 h after dark 6.747225 6.60684 6.88761