condition	mean	min	max
4 h after light	9.281405	9.03621	9.5266
8 h after light	8.638715	7.7787	9.49873
12 h after light	13.84225	13.7135	13.971
4 h after dark	12.7827	11.6445	13.9209
8 h after dark	12.375	10.6753	14.0747
12 h after dark	9.334185	7.10127	11.5671