condition mean min max 4 h after light 10.555396 9.728929 11.381863 8 h after light 9.614654999999999 9.206918 10.022392 12 h after light 9.074628 8.533925 9.615331 4 h after dark 9.417127 8.365762 10.468492 8 h after dark 9.157009500000001 8.206109 10.10791 12 h after dark 10.829067 10.829067 10.829067