condition	mean	min	max
4 h after light	8.834093333333334	8.55587	8.999830000000001
8 h after light	8.79533	8.71529	8.86589
12 h after light	8.99227	8.83417	9.0743
4 h after dark	8.761763333333333	8.60948	8.91945
8 h after dark	8.942833333333333	8.72936	9.20823
12 h after dark	9.01584	8.96172	9.04888