condition mean min max 4 h after light 11.89485 11.1415 12.6482 8 h after light 8.656320000000001 8.26368 9.04896 12 h after light 8.273515 7.40377 9.14326 4 h after dark 11.018833333333333 10.8794 11.1303 8 h after dark 12.3569 12.1483 12.5749 12 h after dark 12.408766666666667 11.9301 12.6973