condition	mean	min	max
4 h after light	3.91272	3.84398	4.03319
8 h after light	3.9283366666666666	3.81685	4.0754
12 h after light	3.87091	3.78384	4.01853
4 h after dark	3.87654	3.8372699999999997	3.9405300000000003
8 h after dark	3.960343333333333	3.8183199999999995	4.152819999999999
12 h after dark	3.8847700000000005	3.8657800000000004	3.9084800000000004