Date	ave Z	Error	Type	Ref
07/06/1942	224.6	2.50	Aerial Imagery	"Thomsen, 1984"
08/01/1943	234.6	2.50	Aerial Imagery	"Thomsen, 1984"
08/04/1946	252.1	2.50	Aerial Imagery	"Thomsen, 1984"
07/17/1948	191.4	2.50	Aerial Imagery	"Thomsen, 1984"
07/24/1949	199.9	2.50	Aerial Imagery	"Thomsen, 1984"
06/25/1959	229.9	2.50	Aerial Imagery	"Thomsen, 1984"
07/21/1978	237.7	2.50	Landsat 2	"Thomsen, 1984"
09/29/1979	244.6	2.50	Landsat 2	"Thomsen, 1984"
07/29/1980	250.3	2.50	Aerial Imagery	"Thomsen, 1984"
04/07/1981	252.3	2.50	Landsat 2	"Thomsen, 1984"
04/25/1981	243.0	2.50	Landsat 2	"Thomsen, 1984"
06/18/1981	233.2	2.50	Landsat 2	"Thomsen, 1984"
03/24/1982	196.2	2.50	Landsat 3	"Thomsen, 1984"
08/19/1982	191.9	2.50	Field obs	"Thomsen, 1984"
07/19/1983	198.8	2.50	Field obs	"Thomsen, 1984"
09/24/1992	246.4	2.50	SAR displacement	"Furuya & Wahr, 2005"
03/18/1993	250.0	2.50	SAR displacement	"Furuya & Wahr, 2006"
10/14/1993	175.0	2.50	SAR displacement	"Furuya & Wahr, 2007"
05/13/1997	209.9	0.28	ATM	"Kjeldsen, et al, 2017"
05/27/2001	240.7	0.15	ATM	"Kjeldsen, et al, 2017"
08/23/2003	250.0	1.00	LANDSAT	"Kjeldsen, et al, 2017"
10/10/2003	169.8	1.00	LANDSAT	"Kjeldsen, et al, 2017"
10/19/2003	169.8	0.30	ICESat	"Kjeldsen, et al, 2017"
02/20/2004	176.8	0.10	ICESat	"Kjeldsen, et al, 2017"
05/21/2004	177.4	0.50	ICESat	"Kjeldsen, et al, 2017"
02/21/2005	192.2	0.04	ICESat	"Kjeldsen, et al, 2017"
05/23/2005	193.3	0.49	ICESat	"Kjeldsen, et al, 2017"
10/24/2005	204.3	0.44	ICESat	"Kjeldsen, et al, 2017"
05/26/2006	206.3	0.51	ICESat	"Kjeldsen, et al, 2017"
10/28/2006	213.6	0.76	ICESat	"Kjeldsen, et al, 2017"
03/14/2007	215.4	0.49	ICESat	"Kjeldsen, et al, 2017"
02/20/2008	224.5	0.29	ICESat	"Kjeldsen, et al, 2017"
10/07/2008	231.5	0.93	ICESat	"Kjeldsen, et al, 2017"
03/11/2009	232.6	0.22	ICESat	"Kjeldsen, et al, 2017"
04/28/2009	233.0	0.43	ATM	"Kjeldsen, et al, 2017"
05/17/2010	239.8	0.14	ATM	"Kjeldsen, et al, 2017"
06/14/2010	239.8	1.00	LANDSAT	"Kjeldsen, et al, 2017"
06/30/2010	239.8	0.20	GPS	"Kjeldsen, et al, 2017"
07/07/2010	175.0	1.00	LANDSAT	"Kjeldsen, et al, 2017"
12/02/2010	185.1	0.09	Cryosat2	"Kjeldsen, et al, 2017"
03/31/2011	187.9	0.27	ATM	"Kjeldsen, et al, 2017"
04/06/2011	187.8	1.13	ATM	"Kjeldsen, et al, 2017"
06/13/2011	188.8	0.04	Cryosat2	"Kjeldsen, et al, 2017"
06/15/2011	188.8	0.04	Cryosat2	"Kjeldsen, et al, 2017"
06/17/2011	188.8	0.04	Cryosat2	"Kjeldsen, et al, 2017"
06/20/2011	189.2	0.03	Cryosat2	"Kjeldsen, et al, 2017"
07/12/2011	192.6	0.05	Cryosat2	"Kjeldsen, et al, 2017"
07/14/2011	192.6	0.05	Cryosat2	"Kjeldsen, et al, 2017"
07/15/2011	192.6	0.05	Cryosat2	"Kjeldsen, et al, 2017"
05/01/2012	201.1	0.07	LVIS	"Kjeldsen, et al, 2017"
06/16/2012	202.7	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/18/2012	202.7	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/20/2012	202.7	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/22/2012	203.6	0.03	Cryosat2	"Kjeldsen, et al, 2017"
07/15/2012	206.3	0.09	Cryosat2	"Kjeldsen, et al, 2017"
07/17/2012	206.8	0.06	Cryosat2	"Kjeldsen, et al, 2017"
07/19/2012	206.3	0.09	Cryosat2	"Kjeldsen, et al, 2017"
09/09/2012	212.6	0.08	Cryosat2	"Kjeldsen, et al, 2017"
09/11/2012	212.7	0.08	Cryosat2	"Kjeldsen, et al, 2017"
09/13/2012	212.7	0.08	Cryosat2	"Kjeldsen, et al, 2017"
09/15/2012	212.7	0.08	Cryosat2	"Kjeldsen, et al, 2017"
06/18/2013	213.5	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/20/2013	213.5	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/22/2013	213.5	0.05	Cryosat2	"Kjeldsen, et al, 2017"
06/25/2013	214.0	0.03	Cryosat2	"Kjeldsen, et al, 2017"
07/17/2013	214.9	0.07	Cryosat2	"Kjeldsen, et al, 2017"
07/19/2013	214.9	0.07	Cryosat2	"Kjeldsen, et al, 2017"
07/21/2013	214.9	0.07	Cryosat2	"Kjeldsen, et al, 2017"
11/09/2013	218.6	0.06	LVIS	"Kjeldsen, et al, 2017"
05/29/2014	220.6	0.10	Cryosat2	"Kjeldsen, et al, 2017"
06/24/2014	220.6	0.10	Cryosat2	"Kjeldsen, et al, 2017"
06/25/2014	220.6	0.10	Cryosat2	"Kjeldsen, et al, 2017"
06/28/2014	221.3	0.06	Cryosat2	"Kjeldsen, et al, 2017"
07/21/2014	222.8	0.04	Cryosat2	"Kjeldsen, et al, 2017"
07/24/2014	222.9	0.04	Cryosat2	"Kjeldsen, et al, 2017"
09/15/2014	226.1	0.10	Cryosat2	"Kjeldsen, et al, 2017"
09/17/2014	226.1	0.10	Cryosat2	"Kjeldsen, et al, 2017"
09/18/2014	226.1	0.10	Cryosat2	"Kjeldsen, et al, 2017"
09/20/2014	226.0	0.10	Cryosat2	"Kjeldsen, et al, 2017"
04/15/2015	227.5	0.08	ATM	"Kjeldsen, et al, 2017"
04/25/2015	227.7	0.10	ATM	"Kjeldsen, et al, 2017"
07/01/2015	229.0	0.03	Cryosat2	"Kjeldsen, et al, 2017"
07/27/2015	230.9	0.03	Cryosat2	"Kjeldsen, et al, 2017"
09/08/2015	230.9	1.00	Sentinel-2	"Kjeldsen, et al, 2017"
09/28/2015	175.0	1.00	Sentinel-2	"Kjeldsen, et al, 2017"
10/19/2015	175.4	0.10	Cryosat2	"Kjeldsen, et al, 2017"
05/04/2016	175.9	0.03	Cryosat2	"Kjeldsen, et al, 2017"
05/16/2016	176.2	0.03	ATM	"Kjeldsen, et al, 2017"
07/03/2016	179.2	0.05	Cryosat2	"Kjeldsen, et al, 2017"
09/13/2016	188.3	0.01	ATM	"Updated Kjeldsen, et al, 2017"
04/29/2017	189.4	0.06	ATM L1B	"Updated Kjeldsen, et al, 2017"
05/01/2017	189.3	0.05	ATML2	"Updated Kjeldsen, et al, 2017"
05/06/2017	189.2	1.00	ArcticDEM	"Updated Kjeldsen, et al, 2017"
08/09/2017	196.5	1.00	ArcticDEM	"Updated Kjeldsen, et al, 2017"
05/01/2018	200.9	0.08	ATML1B	"Updated Kjeldsen, et al, 2017"
12/18/2018	208.0	0.08	ICESat2	"Updated Kjeldsen, et al, 2017"
01/23/2019	208.3	0.11	ICESat2	"Updated Kjeldsen, et al, 2017"
03/18/2019	208.3	0.06	ICESat2	"Updated Kjeldsen, et al, 2017"
05/15/2019	209.3	0.38	ATM2L	"Updated Kjeldsen, et al, 2017"
06/17/2019	211.4	0.04	ICESat2	"Updated Kjeldsen, et al, 2017"
06/25/2019	212.1	0.30	ICESat2	"Updated Kjeldsen, et al, 2017"
07/24/2019	215.0	0.07	ICESat2	"Updated Kjeldsen, et al, 2017"
09/10/2019	217.6	0.35	ATM2L	"Updated Kjeldsen, et al, 2017"
10/15/2019	217.8	0.03	ICESat2	"Updated Kjeldsen, et al, 2017"
10/23/2019	217.4	0.02	ICESat2	"Updated Kjeldsen, et al, 2017"
12/16/2019	217.7	0.04	ICESat2	"Updated Kjeldsen, et al, 2017"
12/23/2019	217.7	0.04	ICESat2	"Updated Kjeldsen, et al, 2017"
01/14/2020	218.2	0.02	ICESat2	"Updated Kjeldsen, et al, 2017"
01/21/2020	217.9	0.03	ICESat2	"Updated Kjeldsen, et al, 2017"
03/16/2020	218.1	0.06	ICESat2	"Updated Kjeldsen, et al, 2017"
03/23/2020	218.0	0.03	ICESat2	"Updated Kjeldsen, et al, 2017"
04/21/2020	218.1	0.02	ICESat2	"Updated Kjeldsen, et al, 2017"
06/22/2020	219.6	0.06	ICESat2	"Updated Kjeldsen, et al, 2017"
07/21/2020	222.2	0.36	ICESat2	"Updated Kjeldsen, et al, 2017"
09/13/2020	224.0	0.05	ICESat2	"Updated Kjeldsen, et al, 2017"
11/05/2020	224.0	1.00	Sentinel-1	"Updated Kjeldsen, et al, 2017"
12/21/2020	176.1	0.20	ICESat2	"Updated Kjeldsen, et al, 2017"
01/19/2021	175.5	0.24	ICESat2	"Updated Kjeldsen, et al, 2017"
03/14/2021	176.0	0.41	ICESat2	"Updated Kjeldsen, et al, 2017"
03/22/2021	176.1	0.35	ICESat2	"Updated Kjeldsen, et al, 2017"
04/19/2021	175.7	0.43	ICESat2	"Updated Kjeldsen, et al, 2017"
07/19/2021	180.9	0.25	ICESat2	"Updated Kjeldsen, et al, 2017"
09/12/2021	187.7	0.12	ICESat2	"Updated Kjeldsen, et al, 2017"
09/19/2021	187.7	0.04	ICESat2	"Updated Kjeldsen, et al, 2017"
12/19/2021	188.1	0.10	ICESat2	"Updated Kjeldsen, et al, 2017"