condition	mean	min	max
0 h after light	8.98775	8.84679	9.12871
4 h after light	8.221555	7.14163	9.30148
8 h after light	5.8841149999999995	5.2029	6.56533
4 h after dark	7.664975	7.63127	7.69868
8 h after dark	8.534965	7.88384	9.18609
12 h after dark	7.258324999999999	6.6884	7.82825