condition	mean	min	max
4 h after light	8.60862	8.57133	8.64381
8 h after light	8.41694	8.29728	8.62242
12 h after light	8.68205	8.62113	8.73523
4 h after dark	8.428686666666668	8.17758	8.5707
8 h after dark	8.477926666666667	8.40441	8.570219999999999
12 h after dark	8.645913333333333	8.600489999999999	8.692210000000001