condition	mean	min	max
0 h after light	18.98475	17.9874	19.9821
4 h after light	14.0832	13.74	14.4264
8 h after light	13.2576	12.4636	14.0516
4 h after dark	16.039250000000003	14.3427	17.7358
8 h after dark	17.262	17.1015	17.4225
12 h after dark	16.20035	14.5708	17.8299