condition	mean	min	max
4 h after light	29.1909	27.9141	30.4677
8 h after light	17.45565	14.8082	20.1031
12 h after light	18.5201	18.3191	18.7211
4 h after dark	26.595	24.2192	28.9708
8 h after dark	28.23855	28.2296	28.2475
12 h after dark	30.54055	28.5248	32.5563