condition	mean	min	max
4 h after light	8.171083333333334	7.88495	8.38905
8 h after light	8.203456666666668	7.9032800000000005	8.44711
12 h after light	8.246816666666668	7.966130000000001	8.473889999999999
4 h after dark	8.82255	8.68286	8.98161
8 h after dark	8.914883333333334	8.768469999999999	9.11381
12 h after dark	9.272063333333334	8.91082	9.51957