condition mean min max 2 h after light 1.0924146666666668 0.420106 2.572 6 h after light 1.359459 0.508774 2.95043 10 h after light 1.9903828333333333 0.640917 3.67752 14 h after light 2.0759386666666666 0.413352 5.20513 18 h after light 1.28081 0.378804 2.62467 2 h after dark 5.104754 0.444014 14.4001