condition	mean	min	max
4 h after light	6.244246666666667	6.0106	6.43533
8 h after light	7.375476666666667	7.104489999999999	7.671810000000001
12 h after light	6.620909999999999	6.2904599999999995	6.8606
4 h after dark	6.6785000000000005	6.58065	6.859780000000001
8 h after dark	6.50371	6.1506	6.87217
12 h after dark	5.489283333333333	5.40532	5.61552