this is a GRAVSOFT program, which contains full explanation. What is your problem ?

Christian

I've tried using GRADJ software for the adjustment of the gravimetrical net but i've had some inconveniences because the RMS are much higher when using local time, than when using universal time. Similarly, due to deficiences when capturing data, high errors are presented in the adjustment.

I sounds like the correction for solid earth tides is incorrect. Make sure the longitude is positive East, i.e. negative i S.America. There is another program on the net for solid earth tide calculation by Dennis Milbert, formerly NOAA/NGS. You should compare with this program. Regards

Christian