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IERS observations − MHB on REN2000 (longitude*sin eps0)
IERS observations − MHB on REN2000 (obliquity)
IERS observations − DD97 on REN2000 (longitude*sin eps0)
IERS observations − DD97 on REN2000 (obliquity)
IERS observations − IERS96
(longitude*sin eps0)
IERS observations − IERS96
(obliquity)
2
1
0
1
mas
0
1
0
1
0
1
0
1
0
−1
−2
1984
1986
1988
1990
1992
1994
1996
1998
2000
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ž
200.0
150.0
percents
100.0
Model A with liquid core
Model A with solid core
retrograde annual nutation
retrograde semi-annual nutation
retrograde ter-annual nutation
retrograde quater-annual nutation
50.0
0.0
-50.0
-100.0
-800
-700
-600
-500
-400 -300 -200
period in days
-100
0
100
200
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