condition	mean	min	max
4 h after light	2.85879	2.71859	2.99899
8 h after light	11.83425	11.3696	12.2989
12 h after light	39.34185	36.5995	42.0842
4 h after dark	38.399	37.9138	38.8842
8 h after dark	22.6466	22.5225	22.7707
12 h after dark	10.17386	9.57372	10.774