condition mean min max 2 h after light 8.496603333333333 7.78948 9.19377 6 h after light 9.95207 9.69299 10.4 10 h after light 9.70908 9.07893 10.486 2 h after dark 8.790633333333334 8.35755 9.05408 6 h after dark 8.718363333333334 8.57956 8.89037 10 h after dark 7.5695500000000004 7.25806 7.90357