condition	mean	min	max
0 h after light	6.84271	6.69884	6.98658
4 h after light	6.988935	5.60947	8.3684
8 h after light	5.728915000000001	5.51126	5.94657
4 h after dark	6.52497	6.21862	6.83132
8 h after dark	6.784445	6.68791	6.88098
12 h after dark	6.41728	5.96143	6.87313