condition	mean	min	max
4 h after light	8.135677999999999	7.853755	8.417601
8 h after light	8.015486	7.971112	8.05986
12 h after light	8.284181	8.273837	8.294525
4 h after dark	8.091497	7.85019	8.332804
8 h after dark	7.732055	7.403442	8.060668
12 h after dark	8.614625	8.614625	8.614625