condition mean min max 4 h after light 9.534056666666666 9.384830000000001 9.74788 8 h after light 9.52695 9.38743 9.61465 12 h after light 10.318620000000001 10.27393 10.39553 4 h after dark 10.020646666666666 9.920960000000001 10.16645 8 h after dark 9.619573333333333 9.51235 9.74863 12 h after dark 9.42831 9.332469999999999 9.61796