CVNET circular

I get the CVNET circular in my email basket.  How do I interpret all the data?  Here is a snippet'

HS 1857+7127(UG+E) 151(20) 158(22) <152(23) 160(26) 160(27) 161(29) 161(30)
          155(31) 162(6) 166(7) 163(8) 167(9) 172(11) 169(12) 171(13)
          168(14) 168(15) 159(16) PYG,ROE,SRIC,SXN

The HS 1857+7127(UG+E) and the observer codes are obvious but what about the rest?