condition	mean	min	max
4 h after light	6.881646666666667	6.75398	6.96413
8 h after light	7.382219999999999	7.29855	7.426889999999999
12 h after light	7.46121	7.386989999999999	7.5381800000000005
4 h after dark	7.307803333333333	7.13385	7.43036
8 h after dark	7.23655	7.04811	7.41558
12 h after dark	7.277256666666666	7.236219999999999	7.30388