condition	mean	min	max
4 h after light	8.871599999999999	8.78461	8.92255
8 h after light	8.884103333333334	8.80353	8.99508
12 h after light	9.025113333333334	8.93277	9.102960000000001
4 h after dark	9.049233333333333	8.90236	9.2597
8 h after dark	9.087656666666668	9.00038	9.20688
12 h after dark	8.985059999999999	8.875689999999999	9.04791