condition	mean	min	max
4 h after light	17.3193505	15.074988	19.563713
8 h after light	14.3957895	13.187832	15.603747
12 h after light	15.439725	15.259031	15.620419
4 h after dark	16.875127499999998	16.331917	17.418338
8 h after dark	16.604608	15.957955	17.251261
12 h after dark	19.609979	19.609979	19.609979