which nl team has the lowest era all-time

The St. Louis Brown Stockings have the lowest ERA by an NL team, with an ERA of 1.92.

	TEAM	ERA	G	W%	W	L	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Brown Stockings	1.92	124	.589	73	51	124	235	115		0	1118.0	1,054	238	547	5	131			4,596	86	1.89	1.05	1.79	0.04	5.1	2.9	1.06		4.40	8.48
2	Grays	1.95	130	.516	65	61	130	266	128		0	1202.0	1,222	261	632	7	79			5,008	45	1.99	0.59	3.37	0.05	5.3	1.6	1.08		4.73	9.15
3	Dark Blues	1.97	129	.619	78	48	129	213	128		0	1168.0	1,142	256	572	4	83			4,854	33	1.64	0.64	2.57	0.03	4.4	1.7	1.05		4.41	8.80
4	Grays	2.18	725	.612	438	278	725	2,711	666		10	6508.2	6,047	1,576	3,128	94	942			26,915	438	3.75	1.30	2.88	0.13	10.1	3.5	1.07		4.33	8.36
5	Blues	2.32	63	.400	24	36	63	182	59		1	578.0	621	149	328	3	87			2,456	30	2.83	1.35	2.09	0.05	7.4	3.5	1.22		5.11	9.67
6	Grays	2.60	61	.250	15	45	61	147	54		0	547.0	589	158	386	3	55			2,369	50	2.42	0.90	2.67	0.05	6.2	2.3	1.18		6.35	9.69
7	Blues	2.63	549	.447	242	299	549	1,932	524		3	4886.0	4,847	1,430	2,782	81	958			20,588	306	3.56	1.76	2.02	0.15	9.4	4.7	1.19		5.12	8.93
8	Reds	2.82	348	.365	125	217	348	819	324		1	3093.1	3,684	968	2,281	36	327			13,677	220	2.38	0.95	2.50	0.10	6.0	2.4	1.30		6.64	10.72
9	Trojans	2.90	330	.412	134	191	330	770	322		0	2962.0	3,241	954	1,930	45	485			12,722	156	2.34	1.47	1.59	0.14	6.1	3.8	1.26		5.86	9.85
10	Mutuals	2.94	57	.375	21	35	57	37	56		0	530.0	718	173	412	8	24			2,400	3	0.63	0.41	1.54	0.14	1.5	1.0	1.40		7.00	12.19
11	Wolverines	3.14	880	.494	426	437	880	3,357	842		5	7790.0	7,964	2,716	4,762	219	1,716	62		33,495	351	3.88	1.98	1.96	0.25	10.0	5.1	1.24	.275	5.50	9.20
12	Ruby Legs	3.18	252	.361	90	159	252	688	223		5	2238.1	2,555	790	1,514	45	368			9,753	146	2.77	1.48	1.87	0.18	7.1	3.8	1.31		6.09	10.27
13	Stars	3.19	71	.314	22	48	71	132	64		0	649.0	775	230	462	4	52			2,854	64	1.83	0.72	2.54	0.06	4.6	1.8	1.27		6.41	10.75
14	Bisons	3.19	656	.485	314	333	656	2,072	606		5	5747.2	6,423	2,040	3,737	127	852			24,876	355	3.24	1.33	2.43	0.20	8.3	3.4	1.27		5.85	10.06
15	Athletics	3.22	60	.237	14	45	60	22	53		2	550.0	783	197	534	2	41			2,565	33	0.36	0.67	0.54	0.03	0.9	1.6	1.50		8.74	12.81
16	Maroons	3.30	237	.343	79	151	237	838	225		0	2042.2	1,985	749	1,305	49	670			8,762	201	3.69	2.95	1.25	0.22	9.6	7.6	1.30		5.75	8.75
17	Dodgers	3.53	21,018	.532	11,115	9,783	21,018	111,550	7,162	1,174	3,373	188171.0	180,368	73,854	87,811	13,163	64,793	5,172	3,451	795,468	5,182	5.34	3.10	1.72	0.63	14.0	8.1	1.30	.278	4.20	8.63
18	Giants	3.59	21,885	.535	11,622	10,100	21,885	109,019	7,696	1,020	3,454	195283.1	190,283	77,797	93,701	14,060	67,006	5,100	3,857	829,743	5,920	5.02	3.09	1.63	0.65	13.1	8.1	1.32	.278	4.32	8.77
19	Braves	3.67	22,379	.503	11,190	11,035	22,379	105,305	8,661	949	3,085	199754.0	199,259	81,514	98,526	13,817	67,576	4,898	3,805	850,211	5,805	4.74	3.04	1.56	0.62	12.4	7.9	1.34	.282	4.44	8.98
20	Cubs	3.70	22,417	.513	11,419	10,837	22,417	111,593	8,282	1,015	3,158	200190.2	198,455	82,222	99,548	14,694	69,056	5,535	3,749	854,670	5,846	5.02	3.10	1.62	0.66	13.1	8.1	1.34	.281	4.48	8.92
21	Cardinals	3.74	20,768	.513	10,583	10,054	20,768	99,005	6,822	996	3,346	185500.0	185,786	77,098	91,011	13,242	63,993	5,292	3,599	790,755	4,930	4.80	3.10	1.55	0.64	12.5	8.1	1.35	.283	4.42	9.01
22	Pirates	3.77	21,422	.501	10,674	10,614	21,422	99,251	7,289	979	3,179	190899.2	192,515	79,868	94,802	13,122	64,478	5,669	3,957	815,072	5,286	4.68	3.04	1.54	0.62	12.2	7.9	1.35	.284	4.47	9.08
23	Astros	3.80	8,138	.492	3,999	4,134	8,138	51,839	1,105	329	1,766	72939.1	70,534	30,757	34,298	6,470	25,941	2,059	2,491	310,631	2,626	6.40	3.20	2.00	0.80	16.7	8.4	1.32	.286	4.23	8.70
24	Reds	3.80	21,044	.500	10,468	10,449	21,044	100,812	6,964	938	3,319	187797.1	187,864	79,243	93,160	14,420	65,017	5,580	3,539	800,911	4,923	4.83	3.12	1.55	0.69	12.6	8.1	1.35	.282	4.46	9.00
25	Mets	3.81	10,134	.484	4,899	5,227	10,134	67,452	1,095	333	2,267	90657.2	86,954	38,359	42,670	8,913	32,342	2,777	3,181	385,500	2,863	6.70	3.21	2.09	0.88	17.5	8.4	1.32	.285	4.24	8.63