condition	mean	min	max
4 h after light	7.6252933333333335	7.5457	7.6753
8 h after light	7.4062833333333336	7.302910000000001	7.4672600000000005
12 h after light	7.3500000000000005	7.173030000000001	7.487610000000001
4 h after dark	7.585513333333334	7.281630000000001	7.744910000000001
8 h after dark	7.662786666666666	7.523619999999999	7.905689999999999
12 h after dark	7.898486666666667	7.851719999999999	7.94596