condition	mean	min	max
4 h after light	7.225286666666667	7.06263	7.3891100000000005
8 h after light	7.642756666666666	7.611619999999999	7.6828199999999995
12 h after light	7.612193333333334	7.53423	7.6855
4 h after dark	7.542470000000001	7.4589300000000005	7.61535
8 h after dark	7.595716666666666	7.53413	7.65635
12 h after dark	7.59293	7.339919999999999	7.8986600000000005