Year
|
Calculated data (based on in-situ measurements and remote sensing data)
|
Uncertainty
|
Upper error
|
Lower error
|
Lower uncertainty limit
|
Upper uncertainty limit
|
1985
|
8.109
|
0.00081699
|
|
|
8.108
|
8.11
|
1986
|
8.108
|
0.000789079
|
|
|
8.107
|
8.109
|
1987
|
8.107
|
0.000708053
|
|
|
8.106
|
8.107
|
1988
|
8.104
|
0.000893326
|
|
|
8.103
|
8.105
|
1989
|
8.103
|
0.000668776
|
|
|
8.102
|
8.104
|
1990
|
8.102
|
0.000823911
|
|
|
8.101
|
8.103
|
1991
|
8.101
|
0.000728206
|
|
|
8.1
|
8.102
|
1992
|
8.101
|
0.000654949
|
|
|
8.1
|
8.101
|
1993
|
8.1
|
0.000715966
|
|
|
8.099
|
8.1
|
1994
|
8.098
|
0.000689711
|
|
|
8.097
|
8.098
|
1995
|
8.096
|
0.000765317
|
|
|
8.095
|
8.097
|
1996
|
8.094
|
0.000658288
|
|
|
8.093
|
8.095
|
1997
|
8.094
|
0.000613007
|
|
|
8.093
|
8.094
|
1998
|
8.091
|
0.000743927
|
|
|
8.09
|
8.091
|
1999
|
8.088
|
0.000734212
|
|
|
8.087
|
8.089
|
2000
|
8.087
|
0.000618534
|
|
|
8.086
|
8.088
|
2001
|
8.086
|
0.000618557
|
|
|
8.085
|
8.086
|
2002
|
8.084
|
0.000628333
|
|
|
8.084
|
8.085
|
2003
|
8.082
|
0.000732485
|
|
|
8.082
|
8.083
|
2004
|
8.081
|
0.000710167
|
|
|
8.08
|
8.082
|
2005
|
8.079
|
0.00071636
|
|
|
8.078
|
8.08
|
2006
|
8.077
|
0.000740666
|
|
|
8.077
|
8.078
|
2007
|
8.075
|
0.000683862
|
|
|
8.075
|
8.076
|
2008
|
8.074
|
0.000689732
|
|
|
8.073
|
8.074
|
2009
|
8.073
|
0.000627885
|
|
|
8.072
|
8.073
|
2010
|
8.071
|
0.000759265
|
|
|
8.07
|
8.072
|
2011
|
8.069
|
0.000824223
|
|
|
8.068
|
8.07
|
2012
|
8.067
|
0.000737861
|
|
|
8.067
|
8.068
|
2013
|
8.065
|
0.000752955
|
|
|
8.064
|
8.066
|
2014
|
8.064
|
0.000703221
|
|
|
8.063
|
8.064
|
2015
|
8.062
|
0.000717608
|
|
|
8.061
|
8.063
|
2016
|
8.06
|
0.000765008
|
|
|
8.059
|
8.06
|
2017
|
8.058
|
0.000790167
|
|
|
8.057
|
8.059
|
2018
|
8.057
|
0.000740047
|
|
|
8.056
|
8.057
|