The performance of the Envisat orbit maintenance manoeuvres was as follows: (Mid-)Time Mode Target Size Nominal Size Calibrated Size First burn 2008/08/29-01:36:09 SFCM 0.0012 m/s 0.0012 m/s 0.0011 m/s The overall calibration result has been: -11.2% The total fuel consumption has been: 0.0050 kg