condition	mean	min	max
4 h after light	8.5874675	8.241682	8.933253
8 h after light	8.474152	8.474152	8.474152
12 h after light	8.331788	7.964807	8.698769
4 h after dark	8.250177	8.250177	8.250177
8 h after dark	8.1209505	7.991724	8.250177
12 h after dark	7.635728	7.635728	7.635728