condition	mean	min	max
4 h after light	7.0802000000000005	7.01662	7.130510000000001
8 h after light	7.773820000000001	7.592810000000001	7.927239999999999
12 h after light	7.9820166666666665	7.79485	8.18797
4 h after dark	7.97842	7.85045	8.17085
8 h after dark	8.041066666666666	7.86408	8.14307
12 h after dark	7.85069	7.773510000000001	7.91587