condition	mean	min	max
4 h after light	7.05659	6.937869999999999	7.1723
8 h after light	7.1379133333333336	6.8158	7.40835
12 h after light	7.05891	6.6764	7.3495
4 h after dark	7.190463333333334	7.16605	7.20403
8 h after dark	7.09301	7.0203	7.14818
12 h after dark	7.29746	7.214110000000001	7.365880000000001