The results of the Tenerife Cosmic Microwave Background ( CMB ) experiments are presented .
These observations cover 5000 and 6500 square degrees on the sky at 10 and 15 GHz respectively centred around Dec . \sim + 35 ^ { \circ } .
The experiments are sensitive to multipoles l = 10 - 30 which corresponds to the Sachs-Wolfe plateau of the CMB power spectra .
The sensitivity of the results are \sim 31 and \sim 12 \mu K at 10 and 15 GHz respectively in a beam-size region ( 5 ^ { \circ } FWHM ) .
The data at 15 GHz show clear detection of structure at high Galactic latitude ; the results at 10 GHz are compatible with these , but at lower significance .
A likelihood analysis of the 10 and 15 GHz data at high Galactic latitude , assuming a flat CMB band power spectra gives a signal \Delta T _ { \ell } = 30 ^ { +10 } _ { -8 } \mu K ( 68 % C.L . ) .
Including the possible contaminating effect due to the diffuse Galactic component , the CMB signal is \Delta T _ { \ell } = 30 ^ { +15 } _ { -11 } \mu K. These values are highly stable against the Galactic cut chosen .
Assuming a Harrison-Zeldovich spectrum for the primordial fluctuations , the above values imply an expected quadrupole Q _ { RMS - PS } = 20 ^ { +10 } _ { -7 } \mu K which confirms previous results from these experiments , and which are compatible with the COBE DMR data in the case of the standard inflationary Cold Dark Matter models .

\keywords cosmic microwave background-cosmology : observations