how many times has james harden scored 20 points in a single half in a game

How many times has James Harden scored 20 or more points in a single half in a game?

Interpreted as:

	NAME	HALF	DATE	PTS	TM		OPP	MIN	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	James Harden J. Harden	1H	10/28/2014	22	HOU	@	LAL		0	5	1	0	5	13	38.5	3	5	60.0	9	9	100.0	64.9	0	0	0	1
2	James Harden J. Harden	1H	12/5/2014	21	HOU	@	MIN		2	4	0	0	7	9	77.8	1	1	100.0	6	7	85.7	86.9	0	2	4	2
3	James Harden J. Harden	1H	12/10/2014	20	HOU	@	GSW		2	3	1	0	8	14	57.1	1	2	50.0	3	4	75.0	63.5	0	2	3	2
4	James Harden J. Harden	1H	12/17/2014	23	HOU	@	DEN		2	4	1	0	5	8	62.5	0	2	0.0	13	15	86.7	78.8	0	2	2	1
5	James Harden J. Harden	1H	12/22/2014	31	HOU	vs	POR		2	5	5	0	10	17	58.8	1	4	25.0	10	11	90.9	71.0	0	2	1	1
6	James Harden J. Harden	1H	1/12/2015	20	HOU	@	BKN		1	4	2	0	6	7	85.7	2	3	66.7	6	6	100.0	103.7	0	1	2	1
7	James Harden J. Harden	1H	1/25/2015	20	HOU	@	LAL		6	4	1	0	8	10	80.0	3	5	60.0	1	1	100.0	95.8	1	5	4	0
8	James Harden J. Harden	1H	2/4/2015	22	HOU	vs	CHI		2	3	1	1	8	13	61.5	2	3	66.7	4	4	100.0	74.5	0	2	1	1
9	James Harden J. Harden	1H	2/8/2015	20	HOU	vs	POR		3	4	1	0	5	11	45.5	2	4	50.0	8	8	100.0	68.9	0	3	3	1
10	James Harden J. Harden	1H	3/15/2015	24	HOU	@	LAC		1	4	0	0	5	7	71.4	3	4	75.0	11	11	100.0	101.4	0	1	1	0
11	James Harden J. Harden	1H	3/19/2015	22	HOU	vs	DEN		7	3	1	0	6	13	46.2	1	3	33.3	9	11	81.8	61.7	1	6	2	2
12	James Harden J. Harden	1H	4/1/2015	24	HOU	vs	SAC		3	4	1	0	8	14	57.1	5	5	100.0	3	3	100.0	78.3	1	2	2	1
13	James Harden J. Harden	1H	11/6/2015	23	HOU	@	SAC		1	6	2	0	8	12	66.7	1	3	33.3	6	8	75.0	74.1	0	1	3	0
14	James Harden J. Harden	1H	11/7/2015	25	HOU	@	LAC		4	1	0	0	8	16	50.0	2	6	33.3	7	7	100.0	65.5	0	4	4	3
15	James Harden J. Harden	1H	11/25/2015	21	HOU	vs	MEM		4	4	2	0	8	9	88.9	3	4	75.0	2	2	100.0	106.3	1	3	4	0
16	James Harden J. Harden	1H	11/27/2015	20	HOU	vs	PHI		2	3	0	0	7	12	58.3	3	4	75.0	3	3	100.0	75.1	1	1	4	1
17	James Harden J. Harden	1H	1/17/2016	21	HOU	@	LAL		0	3	0	0	7	13	53.8	1	4	25.0	6	7	85.7	65.3	0	0	1	0
18	James Harden J. Harden	1H	1/22/2016	21	HOU	vs	MIL		3	3	1	0	6	9	66.7	3	4	75.0	6	6	100.0	90.2	0	3	1	1
19	James Harden J. Harden	1H	4/11/2016	23	HOU	@	MIN		0	4	0	0	7	12	58.3	4	4	100.0	5	7	71.4	76.3	0	0	3	0
20	James Harden J. Harden	1H	11/1/2016	22	HOU	@	CLE	18	4	8	1	0	7	12	58.3	3	5	60.0	5	5	100.0	77.5	0	4	0	1	+11
21	James Harden J. Harden	1H	11/5/2016	24	HOU	@	ATL	19	3	8	2	0	8	11	72.7	4	5	80.0	4	4	100.0	94.0	0	3	5	2	-2
22	James Harden J. Harden	1H	11/14/2016	23	HOU	vs	PHI	19	5	4	0	0	8	13	61.5	2	4	50.0	5	5	100.0	75.7	1	4	3	1	+7
23	James Harden J. Harden	1H	11/27/2016	21	HOU	@	POR	17	1	5	1	0	6	13	46.2	3	7	42.9	6	7	85.7	65.3	0	1	0	2	+3
24	James Harden J. Harden	1H	12/5/2016	21	HOU	vs	BOS	18	5	6	2	0	4	8	50.0	2	3	66.7	11	11	100.0	81.8	1	4	7	1	+13
25	James Harden J. Harden	1H	12/27/2016	24	HOU	@	DAL	18	1	7	0	1	7	11	63.6	2	4	50.0	8	8	100.0	82.6	0	1	3	2	+8