condition	mean	min	max
4 h after light	8.166889999999999	7.996860000000001	8.331489999999999
8 h after light	8.122226666666668	8.0189	8.221810000000001
12 h after light	7.810566666666666	7.632039999999999	7.9405
4 h after dark	8.066456666666667	7.92811	8.34177
8 h after dark	8.099253333333333	7.848660000000001	8.31537
12 h after dark	8.15962	8.08886	8.225539999999999