condition	mean	min	max
4 h after light	7.38132	7.32326	7.49735
8 h after light	7.142473333333333	6.9778199999999995	7.317480000000001
12 h after light	7.2258	6.959239999999999	7.46559
4 h after dark	7.391553333333333	7.0709100000000005	7.64267
8 h after dark	7.406	7.3399399999999995	7.50771
12 h after dark	7.4081399999999995	7.3953	7.424289999999999