condition mean min max 4 h after light 11.325050000000001 11.2667 11.3834 8 h after light 8.927265 8.81847 9.03606 12 h after light 9.709 9.49426 9.92374 4 h after dark 12.87145 11.9346 13.8083 8 h after dark 14.49235 14.2766 14.7081 12 h after dark 11.881499999999999 11.6082 12.1548