condition	mean	min	max
4 h after light	6.735626666666667	6.51689	6.8990800000000005
8 h after light	6.770786666666667	6.72019	6.83091
12 h after light	6.56201	6.36629	6.677169999999999
4 h after dark	6.743426666666667	6.6226	6.87328
8 h after dark	6.8300600000000005	6.62605	7.01173
12 h after dark	6.9071566666666655	6.751989999999999	6.987989999999999