how many 20 rebound games did charles barkley have

Charles Barkley played in 54 games with 20+ rebounds.

Interpreted as:

How many 20 or more rebound regular-season games did Charles Barkley have?

	NAME	DATE	GP	REB	TM		OPP	MIN	PTS	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Charles Barkley C. Barkley	12/17/1985	1	20	PHI	@	IND	41	18	2	4	3	6	13	46.2	0	1	0.0	6	8	75.0	54.5	6	14	5	3
2	Charles Barkley C. Barkley	1/26/1986	1	21	PHI	@	BOS	41	26	2	2	2	8	24	33.3	0	2	0.0	10	11	90.9	45.1	11	10	2	5
3	Charles Barkley C. Barkley	1/28/1986	1	21	PHI	@	SEA	44	18	4	2	4	8	12	66.7	0	0		2	6	33.3	61.5	4	17	5	2
4	Charles Barkley C. Barkley	2/21/1986	1	21	PHI	vs	WAS	44	26	2	1	4	11	22	50.0	0	1	0.0	4	4	100.0	54.7	9	12	5	4
5	Charles Barkley C. Barkley	3/24/1986	1	24	PHI	@	WAS	43	36	4	2	0	13	23	56.5	1	2	50.0	9	11	81.8	64.7	8	16	7	5
6	Charles Barkley C. Barkley	3/30/1986	1	25	PHI	vs	DAL	47	32	3	4	3	12	15	80.0	0	0		8	9	88.9	84.4	5	20	9	4
7	Charles Barkley C. Barkley	4/4/1986	1	22	PHI	vs	CLE	43	27	10	0	2	12	18	66.7	0	2	0.0	3	9	33.3	61.5	7	15	1	2
8	Charles Barkley C. Barkley	11/28/1986	1	21	PHI	vs	POR	43	31	9	1	7	11	18	61.1	0	0		9	11	81.8	67.9	9	12	7	5
9	Charles Barkley C. Barkley	12/10/1986	1	21	PHI	vs	IND	45	30	6	1	4	11	19	57.9	0	2	0.0	8	10	80.0	64.1	7	14	8	4
10	Charles Barkley C. Barkley	12/20/1986	1	21	PHI	vs	DET	44	22	5	0	3	7	14	50.0	0	3	0.0	8	10	80.0	59.8	8	13	6	4
11	Charles Barkley C. Barkley	12/22/1986	1	21	PHI	vs	UTA	40	23	7	3	0	6	10	60.0	0	1	0.0	11	12	91.7	75.3	4	17	7	4
12	Charles Barkley C. Barkley	1/14/1987	1	20	PHI	vs	ATL	43	24	4	2	3	10	11	90.9	1	1	100.0	3	4	75.0	94.0	4	16	5	4
13	Charles Barkley C. Barkley	1/27/1987	1	23	PHI	@	NYK	48	25	7	7	0	6	11	54.5	2	4	50.0	11	11	100.0	78.9	9	14	5	3
14	Charles Barkley C. Barkley	1/30/1987	1	21	PHI	vs	CHI	46	40	5	0	1	12	17	70.6	0	1	0.0	16	22	72.7	75.0	8	13	7	3
15	Charles Barkley C. Barkley	3/4/1987	1	21	PHI	vs	NYK	48	28	6	2	0	11	24	45.8	0	2	0.0	6	10	60.0	49.3	16	5	7	5
16	Charles Barkley C. Barkley	3/20/1987	1	25	PHI	vs	DEN	41	26	9	3	2	10	16	62.5	0	1	0.0	6	7	85.7	68.1	16	9	4	2
17	Charles Barkley C. Barkley	3/23/1987	1	20	PHI	vs	DAL	45	24	4	1	0	10	19	52.6	0	2	0.0	4	5	80.0	56.6	9	11	2	3
18	Charles Barkley C. Barkley	3/24/1987	1	25	PHI	@	CHI	47	17	6	2	3	6	15	40.0	0	1	0.0	5	6	83.3	48.2	11	14	6	6
19	Charles Barkley C. Barkley	4/6/1987	1	23	PHI	@	NYK	44	27	4	3	2	10	15	66.7	1	3	33.3	6	8	75.0	72.9	11	12	8	5
20	Charles Barkley C. Barkley	12/9/1987	1	24	PHI	vs	POR	42	38	3	2	2	10	17	58.8	0	0		18	21	85.7	72.4	7	17	8	4
21	Charles Barkley C. Barkley	2/24/1988	1	21	PHI	@	SAS	51	37	5	2	0	13	19	68.4	2	3	66.7	9	12	75.0	76.2	7	14	5	4
22	Charles Barkley C. Barkley	4/8/1988	1	21	PHI	vs	DET	48	21	5	0	1	9	18	50.0	1	2	50.0	2	5	40.0	52.0	9	12	3	4
23	Charles Barkley C. Barkley	4/13/1988	1	20	PHI	vs	WAS	51	38	1	3	2	13	21	61.9	2	2	100.0	10	15	66.7	68.8	7	13	4	1
24	Charles Barkley C. Barkley	11/28/1988	1	23	PHI	vs	LAL	47	31	6	1	0	13	19	68.4	0	2	0.0	5	14	35.7	61.6	6	17	5	2
25	Charles Barkley C. Barkley	11/30/1988	1	22	PHI	vs	POR	41	41	5	6	1	13	16	81.3	0	1	0.0	15	20	75.0	82.7	9	13	3	2
	Average		1.0	22.0				42.5	26.2	4.4	1.9	1.3	9.2	16.2	56.8	0.5	1.9	27.5	7.3	9.7	74.5	63.9	7.6	14.4	4.3	3.3	7.9
	Total		54	1,189				2,295	1,414	239	100	69	497	875	56.8	28	102	27.5	392	526	74.5	63.9	413	776	233	177	+87