condition	mean	min	max
4 h after light	7.661366666666667	7.1866699999999994	8.01167
8 h after light	7.3460133333333335	7.0397300000000005	7.53224
12 h after light	6.87003	6.771839999999999	6.929539999999999
4 h after dark	7.8382000000000005	7.74413	8.02351
8 h after dark	8.01137	7.84722	8.17408
12 h after dark	8.99118	8.841000000000001	9.19805