condition	mean	min	max
4 h after light	7.05311	6.80572	7.46152
8 h after light	7.518293333333333	7.224189999999999	7.8761399999999995
12 h after light	8.228946666666667	8.19478	8.291030000000001
4 h after dark	7.357096666666666	7.27527	7.45407
8 h after dark	7.16283	6.98223	7.306589999999999
12 h after dark	7.07412	6.840089999999999	7.302910000000001