what is the smallest point differential between best and worst team in an nhl season

The Washington Capitals had 21 points in 1974-75.

	TEAM	PTS	DIFF	REC	SEASON	GP	W	L	T	OTL	PTS%	SOW	SOL	G	GA	PP%	PK%	S/GP	S%	SA/GP	SV%
1	Capitals	21	-265	8-67-5	1974-75	80	8	67	5		.131			181	446			23.06	9.8	38.30	.854
2	Senators	37	-196	14-61-9	1993-94	84	14	61	9		.220			201	397	14.5	73.3	25.58	9.4	33.05	.857
3	Sharks	24	-196	11-71-2	1992-93	84	11	71	2		.143			218	414	16.1	76.6	28.38	9.1	36.67	.866
4	Senators	24	-193	10-70-4	1992-93	84	10	70	4		.143			202	395	14.7	75.0	27.15	8.9	31.83	.852
5	Islanders	30	-177	12-60-6	1972-73	78	12	60	6		.192			170	347			25.03	8.7	34.55	.871
6	Capitals	32	-170	11-59-10	1975-76	80	11	59	10		.200			224	394			24.41	11.5	36.94	.867
7	Nordiques	31	-167	12-61-7	1989-90	80	12	61	7		.194			240	407	18.9	74.3	28.76	10.4	34.42	.852
8	Scouts	36	-161	12-56-12	1975-76	80	12	56	12		.225			190	351			27.40	8.7	36.17	.879
9	Jets	32	-154	9-57-14	1980-81	80	9	57	14		.200			246	400	17.3	74.2	28.28	10.9	34.90	.857
10	Red Wings	40	-149	17-57-6	1985-86	80	17	57	6		.250			266	415	20.9	71.0	28.50	11.7	32.85	.842
11	Rangers	17	-148	6-39-5	1943-44	50	6	39	5		.170			162	310
12	Golden Seals	36	-147	13-55-10	1973-74	78	13	55	10		.231			195	342			25.55	9.8	34.62	.873
13	Sharks	47	-146	19-54-9	2023-24	82	19	54		9	.287	1	5	180	326	20.2	75.4	25.23	8.7	35.13	.887
14	Scouts	41	-144	15-54-11	1974-75	80	15	54	11		.256			184	328			27.79	8.3	35.06	.883
15	Thrashers	39	-143	14-57-7-4	1999-00	82	14	57	7	4	.238			170	313	12.6	80.3	25.79	8.0	31.01	.877
16	Whalers	45	-142	19-54-7	1982-83	80	19	54	7		.281			261	403	19.0	75.4	28.58	11.4	35.89	.860
17	Sharks	39	-140	17-58-5	1991-92	80	17	58	5		.244			219	359	17.1	78.1	29.25	9.4	36.25	.876
18	Penguins	45	-137	18-53-9	1982-83	80	18	53	9		.281			257	394	22.5	72.5	30.23	10.6	32.69	.849
19	Penguins	38	-136	16-58-6	1983-84	80	16	58	6		.238			254	390	20.9	76.0	28.34	11.2	36.35	.866
20	Ducks	58	-129	23-47-12	2022-23	82	23	47		12	.354	3	3	206	335	15.7	72.1	28.37	8.9	39.11	.896
21	Bruins	38	-129	15-47-8	1961-62	70	15	47	8		.271			177	306			30.94	8.2	35.19	.876
22	Capitals	48	-126	17-49-14	1977-78	80	17	49	14		.300			195	321	12.5	71.4	24.95	9.8	31.25	.872
23	Red Wings	41	-126	16-55-9	1976-77	80	16	55	9		.256			183	309			27.48	8.3	29.06	.867
24	Red Wings	39	-123	17-49-5	2019-20	71	17	49		5	.275	3	2	142	265	14.9	74.3	27.10	7.4	32.80	.886
25	Kings	38	-122	14-52-10	1969-70	76	14	52	10		.250			168	290			30.33	7.3	34.80	.890