On <time datetime="2007-02-09">9 February 2007</time>, it was announced that a number of unexpected signals had been received and that these would need to be separated out before final results could be released. In <time datetime="2007-04">April</time> it was announced that the spin axes of the gyroscopes were affected by torque, in a manner that varied over time, requiring further analysis to allow the results to be corrected for this source of error. Consequently, the date for the final release of data was pushed back several times. In the data for the frame-dragging results presented at the <time datetime="2007-04">April 2007</time> meeting of the American Physical Society, the random errors were much larger than the theoretical expected value and scattered on both the positive and negative sides of a null result, therefore causing skepticism as to whether any useful data could be extracted in the future to test this effect.