condition mean min max 0 h after light 6.822010000000001 4.55341 9.09061 4 h after light 3.574655 3.30809 3.84122 8 h after light 2.5974950000000003 1.98293 3.21206 4 h after dark 4.79805 1.91317 7.68293 8 h after dark 6.4220299999999995 6.39508 6.44898 12 h after dark 4.48976 4.44032 4.5392