condition	mean	min	max
4 h after light	7.56721	7.418819999999999	7.680910000000001
8 h after light	7.557013333333334	7.4089100000000006	7.67848
12 h after light	7.719656666666667	7.399380000000001	7.91356
4 h after dark	8.03646	7.845039999999999	8.144689999999999
8 h after dark	8.136333333333333	8.104339999999999	8.1587
12 h after dark	8.178113333333334	7.95035	8.30258