condition	mean	min	max
4 h after light	7.701643333333334	7.5038	8.00707
8 h after light	8.118953333333332	8.004389999999999	8.30647
12 h after light	8.21499	8.09188	8.43154
4 h after dark	8.411133333333334	8.25799	8.59111
8 h after dark	8.086753333333334	7.88015	8.3138
12 h after dark	7.8266100000000005	7.74251	7.97987