condition mean min max 4 h after light 9.237385 8.37457 10.1002 8 h after light 6.23192 5.82548 6.63836 12 h after light 6.389519999999999 5.9327 6.84634 4 h after dark 8.568776666666666 8.20766 8.92608 8 h after dark 9.089973333333333 8.47626 10.2918 12 h after dark 7.904676666666666 7.67819 8.0749