condition mean min max 3 h after light 6.977686666666666 6.57175 7.26016 6 h after light 7.764913333333333 6.66597 8.64513 9 h after light 8.98728 7.2127 10.311 12 h after light 9.672515 7.96562 10.9635 3 h after dark 11.5556 10.8904 12.719 6 h after dark 13.769966666666667 12.9118 14.7178 9 h after dark 11.2173 10.0059 12.6296 12 h after dark 8.88827 7.81925 9.95729