condition	mean	min	max
4 h after light	7.923632	7.820455	8.026809
8 h after light	8.384802	7.785631	8.983973
12 h after light	7.819418000000001	7.449165	8.189671
4 h after dark	7.5593255	7.298196	7.820455
8 h after dark	7.478798	7.319135	7.638461
12 h after dark	7.86682	7.86682	7.86682