condition	mean	min	max
4 h after light	7.22662	7.09477	7.31769
8 h after light	7.208146666666666	7.123889999999999	7.3379199999999996
12 h after light	7.548173333333334	7.47364	7.6119
4 h after dark	7.74375	7.71413	7.76311
8 h after dark	7.667226666666666	7.47917	7.8204199999999995
12 h after dark	7.653436666666667	7.57424	7.742960000000001