condition	mean	min	max
0 h after light	15.4219	15.3623	15.4815
4 h after light	15.021	14.9408	15.1012
8 h after light	13.34945	13.0842	13.6147
4 h after dark	14.37475	12.7239	16.0256
8 h after dark	18.23395	17.4374	19.0305
12 h after dark	16.5483	16.3014	16.7952