Table 4. Number of cells predicted by different flow direction methods for three cases.

Classification		< 1.00	1.00~1.25	1.25~1.50	1.50~1.75	1.75~2.00	≥ 2.00	Note
Result A	SFD	204,423	290,968	289,994	220,251	153,980	463,435	Figure 10a
	MFD	265,793	333,170	293,653	205,579	136,816	388,040	Figure 10b
	IFD	204,353	308,729	303,262	225,944	154,111	426,652	Figure 10c
Result B	SFD	79,688	207,724	289,023	260,152	192,661	582,850	Figure 10d
	MFD	103,482	258,169	316,546	257,649	178,035	498,217	Figure 10e
	IFD	74,790	217,683	304,932	270,043	196,045	548,605	Figure 10f
Result C	SFD	87,741	215,987	288,134	255,975	189,390	574,871	Figure 10g
	MFD	114,687	265,730	313,116	252,559	174,528	491,478	Figure 10h
	IFD	83,006	226,763	303,701	265,347	192,525	540,756	Figure 10i