condition mean min max 4 h after light 0.96089 0.77836 1.14342 8 h after light 1.407105 1.40037 1.41384 12 h after light 1.7392400000000001 1.51823 1.96025 4 h after dark 2.307685 1.9131 2.70227 8 h after dark 1.07873 1.03954 1.11792 12 h after dark 1.496365 1.40694 1.58579