condition mean min max 0 h after light 2.91642 2.4869 3.34594 4 h after light 1.83934 1.80908 1.8696 8 h after light 1.8949500000000001 1.86779 1.92211 4 h after dark 2.7100299999999997 1.90808 3.51198 8 h after dark 2.1345400000000003 2.03675 2.23233 12 h after dark 1.7585549999999999 1.72462 1.79249