condition	mean	min	max
4 h after light	6.0478233333333336	6.03105	6.0622300000000005
8 h after light	8.10503	7.6311	8.406139999999999
12 h after light	5.949416666666667	5.83861	6.0877300000000005
4 h after dark	5.51336	5.38085	5.62592
8 h after dark	5.7226566666666665	5.54225	5.92644
12 h after dark	5.3456133333333336	5.1325400000000005	5.52154