In this report, we discuss results generated by the MIT analysis center (AC) both for submissions of weekly final IGS solutions and our weekly combination of SINEX files from MIT and the other eight IGS analysis centers that submit final SINEX files.  We present here an analysis of the networks we process and a comparison between our position estimates and those from other IGS analysis centers.  For repro3 and our IGS20 submissions, we use combined GPS and Galileo solutions; we also examine the differences between GPS-only and Galileo-only solutions.