COMPARISON OF THE COBE DMR AND TENERIFE DATA

We have compared the Tenerife data with the COBE Differential Microwav e Radiometer (DMR) 2 year data in the declination +40 degrees region o f the sky observed by the Tenerife experiment. Using the Galactic plan e signal at similar to 30 GHz we show that the two data sets are cross -calibrated to within 5%. The high Galactic latitude data were investi gated for the presence of common structures with the properties of cos mic microwave background (CMB) fluctuations. The most prominent featur e in the Tenerife data (Delta T similar to 80 mu K) appears to be pres ent in both the 53 and 90 GHz DMR maps and has the Planckian spectrum expected for CMB anisotropy. The cross-correlation function of the Ten erife and DMR scans is indicative of common structure and at zero lag has the value C(0)(1/2) = 34(-15)(+13) mu K. The combination of the sp atial and spectral information from the two data sets is consistent wi th the presence of cosmic microwave background anisotropies common to both. The probability that noise could produce the observed agreement is less than 5%.