condition mean min max 4 h after light 3.81133 3.18227 4.44039 8 h after light 1.56754 1.40281 1.73227 12 h after light 1.58644 1.47604 1.69684 4 h after dark 1.6023450000000001 1.57053 1.63416 8 h after dark 2.671855 2.52058 2.82313 12 h after dark 3.18106 3.17964 3.18248