condition mean min max 4 h after light 2.760195 2.52872 2.99167 8 h after light 3.816535 3.72555 3.90752 12 h after light 4.0286100000000005 3.78125 4.27597 4 h after dark 6.6097850000000005 6.36766 6.85191 8 h after dark 3.563795 3.14164 3.98595 12 h after dark 3.45223 2.88402 4.02044