condition mean min max 4 h after light 5.66411 2.74489 9.33618 8 h after light 3.169331666666667 0.725015 6.7671 12 h after light 2.0747299999999997 1.1286 2.98011 4 h after dark 3.21758 1.96701 4.57086 8 h after dark 4.825353333333333 2.86036 8.42229 12 h after dark 11.30623 8.36475 16.0321