condition	mean	min	max
4 h after light	7.3851	7.19687	7.49673
8 h after light	7.383293333333333	7.16265	7.637339999999999
12 h after light	7.468823333333333	7.33395	7.550739999999999
4 h after dark	7.617143333333333	7.38282	7.88317
8 h after dark	7.87431	7.678839999999999	8.07928
12 h after dark	7.75558	7.71727	7.779960000000001