Warren Spahn had the lowest ERA in the NL in 1961, with an ERA of 3.02.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the nl in 1961?

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Warren Spahn W. Spahn	3.02	1961	MIL	38	21	13	.618	34	115	21	4	0	262.2	236	88	96	24	64	4	3	1	1,064	4	3.94	2.19	1.80	0.82	10.8	6.0	1.14	.247	3.29	79	3.66	98	8.09	1.6
2	Jim O'Toole J. O'Toole	3.10	1961	CIN	39	19	9	.679	35	178	11	3	2	252.2	229	87	101	16	93	3	2	7	1,061	6	6.34	3.31	1.91	0.57	16.8	8.8	1.27	.276	3.60	75	3.13	78	8.16	24.8
3	Curt Simmons C. Simmons	3.13	1961	STL	30	9	10	.474	29	99	6	2	0	195.2	203	68	91	14	64	4	0	6	840	2	4.55	2.94	1.55	0.64	11.8	7.6	1.36	.287	4.19	73	3.53	84	9.34	14.6
4	Mike McCormick M. McCormick	3.20	1961	SFG	40	13	16	.448	35	163	13	3	0	250.0	235	89	99	33	75	2	3	3	1,033	4	5.87	2.70	2.17	1.19	15.8	7.3	1.24	.266	3.56	82	3.91	102	8.46	-3
5	Bob Gibson B. Gibson	3.24	1961	STL	35	13	12	.520	27	166	10	2	1	211.1	186	76	91	13	119	6	3	7	916	8	7.07	5.07	1.39	0.55	18.1	13.0	1.44	.283	3.88	75	3.58	85	7.92	14.8
6	Joe Gibbon J. Gibbon	3.32	1961	PIT	30	13	10	.565	29	145	7	3	0	195.1	185	72	85	16	57	4	1	4	816	3	6.68	2.63	2.54	0.74	17.8	7.0	1.24	.285	3.92	82	3.09	78	8.52	18.4
7	Sandy Koufax S. Koufax	3.52	1961	LAD	42	18	13	.581	35	269	15	2	1	255.2	212	100	117	27	96	3	2	6	1,068	12	9.47	3.38	2.80	0.95	25.2	9.0	1.20	.275	4.12	83	3.00	73	7.46	31.4
8	Joey Jay J. Jay	3.53	1961	CIN	34	21	10	.677	34	157	14	4	0	247.1	217	97	102	25	92	5	0	1	1,032	9	5.71	3.35	1.71	0.91	15.2	8.9	1.25	.255	3.71	86	3.79	94	7.90	6.3
9	Don Drysdale D. Drysdale	3.69	1961	LAD	40	13	10	.565	37	182	10	3	0	244.0	236	100	111	29	83	20	2	15	1,047	7	6.71	3.06	2.19	1.07	17.4	7.9	1.31	.282	4.09	87	3.89	94	8.70	7
10	Ray Sadecki R. Sadecki	3.72	1961	STL	31	14	10	.583	31	114	13	0	0	222.2	196	92	100	28	102	3	0	2	949	8	4.61	4.12	1.12	1.13	12.0	10.7	1.34	.239	4.04	86	4.60	109	7.92	-8
11	Bob Purkey B. Purkey	3.73	1961	CIN	36	16	12	.571	34	116	13	1	1	246.1	245	102	118	27	51	6	2	4	1,031	7	4.24	1.86	2.27	0.99	11.3	4.9	1.20	.262	4.31	91	3.75	93	8.95	7.4
12	Johnny Podres J. Podres	3.74	1961	LAD	32	18	5	.783	29	124	6	1	0	182.2	192	76	81	27	51	4	2	2	772	8	6.11	2.51	2.43	1.33	16.1	6.6	1.33	.292	3.99	88	4.04	98	9.46	2.4
13	Larry Jackson L. Jackson	3.75	1961	STL	33	14	11	.560	28	113	12	3	0	211.0	203	88	99	20	56	4	2	5	880	3	4.82	2.39	2.02	0.85	12.8	6.4	1.23	.266	4.22	87	3.59	85	8.66	14.6
14	Don Cardwell D. Cardwell	3.82	1961	CHC	39	15	14	.517	38	156	13	3	0	259.1	243	110	121	22	88	10	1	0	1,106	6	5.41	3.05	1.77	0.76	14.1	8.0	1.28	.266	4.20	93	3.61	90	8.43	11.9
15	Carl Willey C. Willey	3.83	1961	MIL	35	6	12	.333	22	91	4	0	0	159.2	147	68	71	20	65	2	6	9	676	5	5.13	3.66	1.40	1.13	13.5	9.6	1.33	.255	4.00	100	4.32	115	8.29	-11.3
16	Bob Friend B. Friend	3.85	1961	PIT	41	14	19	.424	35	108	10	1	1	236.0	271	101	119	16	45	3	3	10	1,001	4	4.12	1.72	2.40	0.61	10.8	4.5	1.34	.308	4.54	96	3.15	80	10.33	20.7
17	Dick Ellsworth D. Ellsworth	3.86	1961	CHC	37	10	11	.476	31	91	7	1	0	186.2	213	80	90	23	48	3	2	3	799	9	4.39	2.31	1.90	1.11	11.4	6.0	1.40	.300	4.34	94	4.02	100	10.27	0.2
18	Juan Marichal J. Marichal	3.89	1961	SFG	29	13	10	.565	27	124	9	3	0	185.0	183	80	88	24	48	2	2	5	769	7	6.03	2.34	2.58	1.17	16.1	6.2	1.25	.278	4.28	100	3.73	98	8.90	1.6
19	Stan Williams S. Williams	3.90	1961	LAD	41	15	12	.556	35	205	6	2	0	235.1	213	102	114	21	108	6	3	9	1,008	9	7.84	4.13	1.90	0.80	20.3	10.7	1.36	.287	4.36	92	3.44	83	8.15	17.9
20	Lew Burdette L. Burdette	4.00	1961	MIL	40	18	11	.621	36	92	14	3	0	272.1	295	121	131	31	33	3	4	3	1,126	1	3.04	1.09	2.79	1.02	8.2	2.9	1.20	.273	4.33	104	3.77	101	9.75	-1.9
21	Harvey Haddix H. Haddix	4.10	1961	PIT	29	10	6	.625	22	99	5	2	0	156.0	159	71	72	15	41	2	4	6	646	4	5.71	2.37	2.41	0.87	15.3	6.3	1.28	.294	4.15	102	3.38	86	9.17	9.7
22	Art Mahaffey A. Mahaffey	4.10	1961	PHI	36	11	19	.367	32	158	12	3	0	219.1	205	100	110	27	70	7	1	6	916	9	6.48	2.87	2.26	1.11	17.2	7.6	1.25	.272	4.51	102	3.79	96	8.41	3.7
23	Bob Buhl B. Buhl	4.11	1961	MIL	32	9	10	.474	28	77	9	1	0	188.1	180	86	99	23	98	5	2	4	820	3	3.68	4.68	0.79	1.10	9.4	12.0	1.48	.254	4.73	107	4.98	133	8.60	-28
24	Ernie Broglio E. Broglio	4.12	1961	STL	29	9	12	.429	26	113	7	2	0	174.2	166	80	97	19	75	1	2	5	762	1	5.82	3.86	1.51	0.98	14.8	9.8	1.38	.265	5.00	96	4.00	95	8.55	4.6
25	Jack Sanford J. Sanford	4.22	1961	SFG	38	13	9	.591	33	112	6	0	0	217.1	203	102	114	22	87	5	1	7	923	3	4.64	3.60	1.29	0.91	12.1	9.4	1.33	.260	4.72	108	4.13	108	8.41	-8.1