Click on the icons to obtain plots showing the deviation of the ERS-1 or ERS-2 determined ground tracks with respect to their reference ground tracks, at several ascending and descending latitudes on the northern hemisphere, or plots showing the relative separation between the ERS-1 and ERS-2 ground tracks (Difference).
For information about reference ground tracks and orbit maintenance contact Mats Rosengren.
| ERS-1 | ERS-2 | Difference | |
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| october '10 | . | |
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| september '10 | . | |
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| august '10 | . | |
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| july '10 | . | |
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| may '10 | . | |
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| april '10 | . | |
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| march '10 | . | |
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| february '10 | . | |
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| january '10 | . | |
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| december '09 | . | |
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| november '09 | . | |
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| october '09 | . | |
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| september '09 | . | |
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| august '09 | . | |
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| february '09 | . | |
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| january '09 | . | |
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| december '08 | . | |
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| november '08 | . | |
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| october '08 | . | |
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| september '08 | . | |
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| august '08 | . | |
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| july '08 | . | |
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| may '08 | . | |
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| april '08 | . | |
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| march '08 | . | |
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| february '08 | . | |
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| january '08 | . | |
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| december '07 | . | |
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| november '07 | . | |
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| october '07 | . | |
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| september '07 | . | |
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| august '07 | . | |
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| july '07 | . | |
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| june '07 | . | |
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| may '07 | . | |
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| march '07 | . | |
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| february '07 | . | |
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| january '07 | . | |
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| december '06 | . | |
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| november '06 | . | |
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| october '06 | . | |
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| september '06 | . | |
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| august '06 | . | |
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| july '06 | . | |
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| june '06 | . | |
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| may '06 | . | |
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| april '06 | . | |
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| march '06 | . | |
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| february '06 | . | |
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| january '06 | . | |
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| december '05 | . | |
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| November '05 | . | |
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| october '05 | . | |
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| september '05 | . | |
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| august '05 | . | |
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| july '05 | . | |
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| may '05 | . | |
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| april '05 | . | |
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| march '05 | . | |
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| february '05 | . | |
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| january '05 | . | |
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| december '04 | . | |
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| November '04 | . | |
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| October '04 | . | |
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| September '04 | . | |
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| August '04 | . | |
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| July '04 | . | |
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| April '04 | . | |
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| March '04 | . | |
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| February '04 | . | |
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| January '04 | . | |
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| December '03 | . | |
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| November '03 | . | |
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| October '03 | . | |
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| September '03 | . | |
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| August '03 | . | |
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| July '03 | . | |
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| June '03 | . | |
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| April '03 | . | |
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| March '03 | . | |
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| February '03 | . | |
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| January '03 | . | |
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| December '02 | . | |
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| November '02 | . | |
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| October '02 | . | |
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| September '02 | . | |
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| March '02 | . | |
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| January '02 | . | |
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| December '01 | . | |
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| November '01 | . | |
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| October '01 | . | |
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| September '01 | . | |
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| August '01 | . | |
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| July '01 | . | |
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| June '01 | . | |
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| May '01 | . | |
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| April '01 | . | |
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| March '01 | . | |
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| February '01 | . | |
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| January '01 | . | |
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| December '00 | . | |
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| November '00 | . | |
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| October '00 | . | |
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| September '00 | . | |
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| August '00 | . | |
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| July '00 | . | |
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| June '00 | . | |
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| May '00 | . | |
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| April '00 | . | |
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| March '00 | |
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| February '00 | |
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| January '00 | |
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| December '99 | |
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| November '99 | |
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| October '99 | |
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| January '99 | |
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| December '98 | |
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| October '98 | |
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| September '98 | |
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| January '98 | |
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| December '97 | |
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| November '97 | |
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| September '97 | |
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| July '97 | |
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| March '97 | |
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| February '97 | |
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| January '97 | |
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| December '96 | |
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| November '96 | |
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| October '96 | |
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