condition mean min max 0 h after light 2.9671849999999997 2.51477 3.4196 4 h after light 3.14793 2.17084 4.12502 8 h after light 6.668265 5.38102 7.95551 4 h after dark 6.384445 4.93085 7.83804 8 h after dark 6.089965 5.08574 7.09419 12 h after dark 3.797605 3.67847 3.91674