Editing PHPtimeseries Data

Hi

I have a number of feeds using PHPtimeseries which is the default for daily data. Due to a power outage on some remote inputs I have a few negative entries which are incorrect and distort the display.

http://79.78.46.160/emoncms/ianeagland&id=7

I have searched the forum and found reference to correcting data in some engine types but not PHPtimeseries. Is there a way I can correct/edit the data or at least eliminate the negative entries?

Regards

Ian