Goalie Z-Score

Hi there,

I've compiled the data about goalies regular season Z-Score (# of standard deviations above the mean), because I couldn't find it on the internet or here on forums (it seems that some data was lost in migration). Z-Score is IMHO the best tool for measuring goalie dominance over his peers.

Data:
nhl.com

Method:
Calculate season weighted (goalies facing more games are more significant to the result) mean sv%, measured goalie excluded:

X' = Sum1..N(Wi * Xi)/Sum1..N(Wi)

Xi - Save percentage
Wi - Shots against
N - number of goalies playing at least one game, measured goalie excluded

Calculate season weighted standard deviation. Again measured goalie excluded:

SD = sqrt(Sum1..N(Wi * (Xi - X')^2) / (((N-1)/N) * Sum1..N(Wi)))

X' - Weighted mean
Xi - Save percentage
Wi - Shots against
N - number of goalies playing at least one game, measured goalie excluded

Calculate goalie Z-Score

Z-Score = (X - X') / SD

X - goalie Sv%
X' - weighted mean Sv%
SD - weighted standard deviation

Season data:

Season	Number of Goalies	Mean	Standard deviation	Goalies with Top 100 seasons
1955-1956	13	0.9191	0.01316
1956-1957	10	0.9112	0.01204	Glenn Hall
1957-1958	14	0.9086	0.01556
1958-1959	16	0.9055	0.01402	Jacques Plante
1959-1960	15	0.9076	0.01507
1960-1961	14	0.9079	0.01402
1961-1962	14	0.9059	0.01746
1962-1963	15	0.9078	0.00978	Glenn Hall
1963-1964	15	0.9162	0.01319	Johnny Bower
1964-1965	12	0.9085	0.01166	Glenn Hall
1965-1966	19	0.9042	0.01757
1966-1967	19	0.9069	0.01484
1967-1968	31	0.9095	0.01473	Johnny Bower, Bruce Gamble
1968-1969	38	0.9082	0.01439	Glenn Hall
1969-1970	34	0.9119	0.01226	Tony Esposito
1970-1971	41	0.9032	0.01898	Jacques Plante
1971-1972	41	0.9025	0.01899	Tony Esposito, Ken Dryden
1972-1973	45	0.8959	0.0175	Ken Dryden
1973-1974	49	0.8959	0.01974	Tony Esposito, Bernie Parent
1974-1975	51	0.8903	0.02046	Rogie Vachon, Bernie Parent
1975-1976	53	0.8898	0.01904	Glenn Resch, Ken Dryden
1976-1977	53	0.8906	0.01758	Glenn Resch, Ken Dryden
1977-1978	53	0.8888	0.01927	Tony Esposito, Ken Dryden
1978-1979	50	0.8825	0.01997	Glenn Resch, Ken Dryden, Mike Palmateer
1979-1980	69	0.8824	0.01584	Tony Esposito
1980-1981	70	0.8761	0.01849
1981-1982	66	0.8729	0.0182	Grant Fuhr, Billy Smith
1982-1983	67	0.8754	0.01829	Billy Smith, Pete Peeters, Murray Bannerman, Roland Melanson
1983-1984	69	0.8732	0.01767	Billy Smith
1984-1985	66	0.8746	0.01533	Pelle Lindbergh
1985-1986	68	0.8741	0.01894	Bob Froese, Kelly Hrudey
1986-1987	63	0.8798	0.0136	Ron Hextall
1987-1988	63	0.8796	0.01317	Patrick Roy, Kelly Hrudey
1988-1989	67	0.8790	0.01447	Jon Casey, Mike Vernon, Patrick Roy
1989-1990	70	0.8807	0.01705	Daren Puppa, Patrick Roy
1990-1991	77	0.8860	0.0160	Patrick Roy, Ed Belfour
1991-1992	73	0.8881	0.0141	Curtis Joseph, Bob Essensa, John Vanbiesbrouck, Patrick Roy
1992-1993	71	0.8849	0.01558	Curtis Joseph, Ed Belfour, Felix Potvin
1993-1994	79	0.8950	0.01876	John Vanbiesbrouck, Dominik Hasek
1994-1995	68	0.9005	0.01433	Dominik Hasek
1995-1996	78	0.8984	0.01582	Daren Puppa, Dominik Hasek
1996-1997	76	0.9047	0.01475	Jeff Hackett, Dominik Hasek, Martin Brodeur, Patrick Roy
1997-1998	73	0.9062	0.0124	Tom Barrasso, Dominik Hasek
1998-1999	85	0.9077	0.0132	Byron Dafoe, Ron Tugnutt, Dominik Hasek
1999-2000	83	0.9043	0.0137
2000-2001	88	0.9032	0.01428	Sean Burke, Roman Cechmanek, Mike Dunham
2001-2002	89	0.9077	0.01159	Patrick Roy, Jose Theodore
2002-2003	91	0.9088	0.01428	Marty Turco, Dwayne Roloson
2003-2004	94	0.9109	0.01328	Dwayne Roloson, Roberto Luongo
2005-2006	89	0.9012	0.01436	Henrik Lundqvist, Miikka Kiprusoff, Manny Fernandez, Tomas Vokoun, Dominik Hasek
2006-2007	84	0.9052	0.01399	Niklas Backstrom, Chris Mason
2007-2008	89	0.9091	0.01328
2008-2009	89	0.9084	0.01296	Tomas Vokoun, Tim Thomas
2009-2010	83	0.9112	0.01162	Tuukka Rask, Ryan Miller
2010-2011	87	0.9128	0.01362	Tim Thomas, Pekka Rinne
2011-2012	88	0.9135	0.01233	Mike Smith, Henrik Lundqvist, Jonathan Quick
2012-2013	82	0.9119	0.01412
2013-2014	97	0.9138	0.01302	Tuukka Rask
2014-2015	92	0.9146	0.01312	Carey Price
2015-2016	92	0.9148	0.01054	Brian Elliott
2016-2017	94	0.9134	0.01162	Sergei Bobrovsky
2017-2018	95	0.9122	0.01195	Marc-Andre Fleury, Antti Raanta, Pekka Rinne

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Seasonal data (minimum 40 games):

#	Name	Season	S%	GP	Z-Score	Awards
1	Dominik Hasek	1998-1999	0.9366	64	2.4150	Vezina
2	Jacques Plante	1970-1971	0.9437	40	2.4050
3	Dominik Hasek	1994-1995	0.9303	41	2.2944	Vezina
4	Dominik Hasek	1997-1998	0.9315	72	2.2749	Hart, Vezina, Pearson
5	Jose Theodore	2001-2002	0.9310	67	2.1778	Hart, Vezina
6	Ken Dryden	1975-1976	0.9266	62	2.1320	Retro Vezina
7	Glenn Resch	1975-1976	0.9275	44	2.1279
8	Patrick Roy	1988-1989	0.9078	48	2.1212	Vezina, Jennings
9	Bernie Parent	1973-1974	0.9322	73	2.1013	Retro Vezina
10	Glenn Hall	1956-1957	0.9280	70	2.0830
11	Patrick Roy	1991-1992	0.9141	67	1.9992	Vezina, Jennings
12	Tim Thomas	2008-2009	0.9327	54	1.9760	Vezina, Jennings
13	Tim Thomas	2010-2011	0.9381	57	1.9648	Vezina
14	Patrick Roy	1989-1990	0.9119	54	1.9603	Vezina
15	Rogie Vachon	1974-1975	0.9269	54	1.9558
16	Dominik Hasek	1993-1994	0.9297	58	1.9533	Vezina, Jennings
17	Roland Melanson	1982-1983	0.9092	44	1.9522	Jennings
18	Bob Froese	1985-1986	0.9086	51	1.9296	Jennings
19	Jacques Plante	1958-1959	0.9251	67	1.9204	Retro Vezina
20	Ken Dryden	1972-1973	0.9264	54	1.9132	Retro Vezina
21	Bruce Gamble	1967-1968	0.9343	41	1.8728
22	Tony Esposito	1969-1970	0.9318	63	1.8695	Retro Vezina
23	Tony Esposito	1973-1974	0.9286	70	1.8497	Retro Vezina
24	Johnny Bower	1967-1968	0.9341	43	1.8470
25	Dominik Hasek	1996-1997	0.9297	67	1.8220	Hart, Vezina, Pearson
26	Ken Dryden	1977-1978	0.9215	52	1.8160	Retro Vezina
27	Curtis Joseph	1992-1993	0.9109	68	1.7984
28	Tuukka Rask	2009-2010	0.9312	45	1.7780
29	Tony Esposito	1971-1972	0.9339	48	1.7766	Retro Vezina
30	Kelly Hrudey	1985-1986	0.9057	45	1.7654
31	Ken Dryden	1976-1977	0.9196	56	1.7651	Retro Vezina
32	Billy Smith	1982-1983	0.9059	41	1.7453	Jennings
33	Niklas Backstrom	2006-2007	0.9289	41	1.7406	Jennings
34	Pelle Lindbergh	1984-1985	0.8992	65	1.7294	Vezina
35	Ron Hextall	1986-1987	0.9015	66	1.7217	Vezina
36	Dominik Hasek	2005-2006	0.9251	43	1.7186
37	Marty Turco	2002-2003	0.9323	55	1.7119
38	Dwayne Roloson	2003-2004	0.9327	48	1.7017
39	Curtis Joseph	1991-1992	0.9103	60	1.6830
40	Glenn Resch	1978-1979	0.9141	43	1.6769
41	Bob Essensa	1991-1992	0.9104	47	1.6602
42	Felix Potvin	1992-1993	0.9097	48	1.6595
43	John Vanbiesbrouck	1993-1994	0.9241	57	1.6311
44	Sergei Bobrovsky	2016-2017	0.9314	63	1.6237	Vezina
45	John Vanbiesbrouck	1991-1992	0.9098	45	1.6044
46	Ken Dryden	1971-1972	0.9300	64	1.6043
47	Pete Peeters	1982-1983	0.9032	63	1.6036	Vezina
48	Patrick Roy	1987-1988	0.8998	45	1.6012	Jennings
49	Ed Belfour	1990-1991	0.9097	74	1.5852	Vezina, Jennings
50	Glenn Resch	1976-1977	0.9170	46	1.5794
51	Roberto Luongo	2003-2004	0.9305	72	1.5667
52	Ryan Miller	2009-2010	0.9285	69	1.5621	Vezina
53	Patrick Roy	2001-2002	0.9251	63	1.5613	Jennings
54	Miikka Kiprusoff	2005-2006	0.9226	74	1.5598	Vezina, Jennings
55	Martin Brodeur	1996-1997	0.9265	67	1.5444	Jennings
56	Antti Raanta	2017-2018	0.9301	47	1.5409
57	Jeff Hackett	1996-1997	0.9265	41	1.5234
58	Jon Casey	1988-1989	0.8997	55	1.4977
59	Carey Price	2014-2015	0.9334	66	1.4948	Hart, Vezina, Jennings, Ted Linday
60	Glenn Hall	1968-1969	0.9283	41	1.4865	Retro Vezina
61	Henrik Lundqvist	2005-2006	0.9218	53	1.4794
62	Chris Mason	2006-2007	0.9252	40	1.4729
63	Brian Elliott	2015-2016	0.9299	42	1.4647
64	Byron Dafoe	1998-1999	0.9261	68	1.4547
65	Glenn Hall	1964-1965	0.9230	41	1.4545
66	Murray Bannerman	1982-1983	0.9008	41	1.4456
67	Bernie Parent	1974-1975	0.9181	68	1.4402	Retro Vezina
68	Grant Fuhr	1981-1982	0.8978	48	1.4332
69	Billy Smith	1981-1982	0.8979	46	1.4300	Vezina
70	Mike Palmateer	1978-1979	0.9091	58	1.4284
71	Tony Esposito	1977-1978	0.9144	64	1.4276
72	Dominik Hasek	1995-1996	0.9199	59	1.4250
73	Mike Smith	2011-2012	0.9303	67	1.4228
74	Johnny Bower	1963-1964	0.9319	51	1.4081
75	Ed Belfour	1992-1993	0.9058	71	1.4063	Vezina, Jennings
76	Ken Dryden	1978-1979	0.9092	47	1.3961	Retro Vezina
77	Mike Dunham	2000-2001	0.9225	48	1.3928
78	Tomas Vokoun	2008-2009	0.9256	59	1.3731
79	Henrik Lundqvist	2011-2012	0.9298	62	1.3684	Vezina
80	Ron Tugnutt	1998-1999	0.9253	43	1.3658
81	Tony Esposito	1979-1980	0.9027	69	1.3611
82	Daren Puppa	1989-1990	0.9029	56	1.3607
83	Sean Burke	2000-2001	0.9219	62	1.3591
84	Billy Smith	1983-1984	0.8962	42	1.3489
85	Roman Cechmanek	2000-2001	0.9214	59	1.3127
86	Tomas Vokoun	2005-2006	0.9193	61	1.3069
87	Daren Puppa	1995-1996	0.9183	57	1.3003
88	Patrick Roy	1996-1997	0.9231	62	1.3001
89	Patrick Roy	1990-1991	0.9060	48	1.2991
90	Manny Fernandez	2005-2006	0.9193	58	1.2975
91	Marc-Andre Fleury	2017-2018	0.9273	46	1.2960
92	Pekka Rinne	2017-2018	0.9271	59	1.2896	Vezina
93	Glenn Hall	1962-1963	0.9181	66	1.2822	Retro Vezina
94	Mike Vernon	1988-1989	0.8970	52	1.2812
95	Tom Barrasso	1997-1998	0.9215	63	1.2770
96	Tuukka Rask	2013-2014	0.9299	58	1.2753	Vezina
97	Dwayne Roloson	2002-2003	0.9265	50	1.2751
98	Pekka Rinne	2010-2011	0.9296	64	1.2720
99	Kelly Hrudey	1987-1988	0.8957	47	1.2711
100	Jonathan Quick	2011-2012	0.9286	69	1.2666

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Most represented:

Occurrences	Goalies
7	[Patrick Roy, Dominik Hasek]
6	[Ken Dryden]
5	[Tony Esposito]
4	[Glenn Hall]
3	[Billy Smith, Glenn Resch]
2	[Jacques Plante, Kelly Hrudey, Curtis Joseph, Johnny Bower, Pekka Rinne, Ed Belfour, Tuukka Rask, Henrik Lundqvist, Tomas Vokoun, Dwayne Roloson, Bernie Parent, Daren Puppa, Tim Thomas, John Vanbiesbrouck]
1	[Sergei Bobrovsky, Pelle Lindbergh, Chris Mason, Felix Potvin, Mike Vernon, Murray Bannerman, Tom Barrasso, Roland Melanson, Bruce Gamble, Roman Cechmanek, Mike Smith, Jon Casey, Miikka Kiprusoff, Ron Hextall, Roberto Luongo, Martin Brodeur, Mike Dunham, Grant Fuhr, Pete Peeters, Manny Fernandez, Sean Burke, Ron Tugnutt, Jeff Hackett, Mike Palmateer, Marc-Andre Fleury, Marty Turco, Bob Essensa, Byron Dafoe, Jonathan Quick, Niklas Backstrom, Antti Raanta, Ryan Miller, Carey Price, Rogie Vachon, Jose Theodore, Bob Froese, Brian Elliott]

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By decade:

Decade	Number of Top 100 goalies	Goalies
1950	2	Glenn Hall, Jacques Plante
1960	7	Bruce Gamble, Glenn Hall, Johnny Bower, Tony Esposito
1970	18	Bernie Parent, Glenn Resch, Jacques Plante, Ken Dryden, Mike Palmateer, Rogie Vachon, Tony Esposito
1980	18	Billy Smith, Bob Froese, Daren Puppa, Grant Fuhr, Jon Casey, Kelly Hrudey, Mike Vernon, Murray Bannerman, Patrick Roy, Pelle Lindbergh, Pete Peeters, Roland Melanson, Ron Hextall
1990	23	Bob Essensa, Byron Dafoe, Curtis Joseph, Daren Puppa, Dominik Hasek, Ed Belfour, Felix Potvin, Jeff Hackett, John Vanbiesbrouck, Martin Brodeur, Patrick Roy, Ron Tugnutt, Tom Barrasso
2000	20	Chris Mason, Dominik Hasek, Dwayne Roloson, Henrik Lundqvist, Jose Theodore, Manny Fernandez, Marty Turco, Miikka Kiprusoff, Mike Dunham, Niklas Backstrom, Patrick Roy, Roberto Luongo, Roman Cechmanek, Ryan Miller, Sean Burke, Tim Thomas, Tomas Vokoun, Tuukka Rask
2010	12	Antti Raanta, Brian Elliott, Carey Price, Henrik Lundqvist, Jonathan Quick, Marc-Andre Fleury, Mike Smith, Pekka Rinne, Sergei Bobrovsky, Tim Thomas, Tuukka Rask

[THEAD] [/THEAD]
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Dominik Hasek is (as expected) by this metric the most dominant regular season goalie ever, with 7 straight seasons in Top 100.
Although Hasek's two best seasons are significantly better than Roy's, Roy's top 7 seasons stack surprisingly well against Hasek 3rd to 6th best seasons.
Martin Brodeur only appears on this list once which confirms that his peak was far behind both Hasek and Roy.
Tim Thomas's peak seasons rank very high on the list (12th, 13th), which are two most dominant seasons post lockout.
Marc-Andre Fleury 2017-2018 performance grants him 91th place on this list.
Very few season from 50', 60' and 10' appears on the list. The reason for this is probably that decades are incomplete (50', 10') and because of O6 era (50', 60').

Thoughts?

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