condition mean min max 4 h after light 5.6171999999999995 4.86653 6.03088 8 h after light 5.194505 0.933935 9.82755 12 h after light 5.816183333333333 3.4247 8.93068 4 h after dark 8.938453333333333 6.48906 10.3017 8 h after dark 9.547183333333333 7.54135 10.9959 12 h after dark 8.71953 6.78544 9.79185