condition	mean	min	max
4 h after light	7.660826666666667	7.327160000000001	7.905869999999999
8 h after light	7.65665	7.24253	7.90555
12 h after light	7.7805	7.53465	8.12395
4 h after dark	7.643296666666666	7.28322	7.91705
8 h after dark	7.713203333333333	7.3425	8.08013
12 h after dark	7.172933333333333	7.099360000000001	7.244839999999999