condition	mean	min	max
4 h after light	7.943733333333333	7.6146899999999995	8.20545
8 h after light	8.266070000000001	8.13896	8.38381
12 h after light	8.409083333333333	8.37278	8.45373
4 h after dark	8.143133333333333	8.04983	8.222380000000001
8 h after dark	8.04908	7.93341	8.21113
12 h after dark	7.837149999999999	7.45825	8.09103