jgg     2013 33 (6):  53-56    ISSN: 0412-1961  CN: 21-1139/TG QUALITY EVOLUTION OF DATA FROM CORS IN HUBEI 1）Key Laboratory of  Earthquake Geodesy，Institute of Seismology，CEA，Wuhan 430071 2）Wuhan Base of Institute of Crustal Dynamics，CEA Wuhan 430071 Received: 2013-04-24  Revised: null  Online: 2013-12-13 Supporting info