condition	mean	min	max
4 h after light	7.792680000000001	7.6858	7.948860000000001
8 h after light	7.60452	7.58436	7.61765
12 h after light	7.4146366666666665	7.127680000000001	7.60225
4 h after dark	7.625883333333333	7.48365	7.86552
8 h after dark	7.81211	7.54501	8.07235
12 h after dark	7.804763333333334	7.487760000000001	7.99143