condition	mean	min	max
4 h after light	7.562559	6.827577	8.297541
8 h after light	7.914514499999999	7.252192	8.576837
12 h after light	7.740923	7.620151	7.861695
4 h after dark	6.849184	6.446176	7.252192
8 h after dark	6.876768	6.71597	7.037566
12 h after dark	7.067779	7.067779	7.067779