condition	mean	min	max
4 h after light	7.404623333333334	7.251710000000001	7.58173
8 h after light	7.5931033333333335	7.46932	7.70891
12 h after light	7.697326666666666	7.6267	7.82366
4 h after dark	7.34633	7.18065	7.52265
8 h after dark	7.178023333333333	7.0709800000000005	7.34134
12 h after dark	6.96543	6.93111	7.012289999999999