"time"	"region"	"quantity [m(3)]"	"flux"	"flux_in"	"flux_out"	"mass"	"source"	"source_in"	"source_out"	"flux_increment"	"source_increment"	"flux_cumulative"	"source_cumulative"	"error"
0	"region_1"	"water_volume"	0	0	0	0	0	0	0	0	0	0	0	0
0	".IMPLICIT_BOUNDARY"	"water_volume"	-4.02456e-16	0	-4.02456e-16	0	0	0	0	0	0	0	0	0