condition	mean	min	max
4 h after light	7.959976666666666	7.81577	8.089319999999999
8 h after light	8.432820000000001	8.28185	8.5942
12 h after light	8.381110000000001	8.265260000000001	8.49506
4 h after dark	8.18244	8.00191	8.334010000000001
8 h after dark	8.289793333333332	8.0826	8.43619
12 h after dark	7.964133333333334	7.89841	8.01421