condition	mean	min	max
4 h after light	2.296145	2.05559	2.5367
8 h after light	3.82819	3.66517	3.99121
12 h after light	19.4507	18.4233	20.4781
4 h after dark	31.457	30.9922	31.9218
8 h after dark	14.93485	14.5585	15.3112
12 h after dark	6.33189	6.22379	6.43999