This paper presents the results from the Jodrell Bank – IAC two-element 33 GHz interferometer operated with an element separation of 32.9 wavelengths and hence sensitive to 1 ^ { \circ } -scale structure on the sky .
The level of CMB fluctuations , assuming a flat CMB spatial power spectrum over the range of multipoles \ell = 208 \pm 18 , was found using a likelihood analysis to be \Delta T _ { \ell } = 63 ^ { +7 } _ { -6 } { \mu K } at the 68 % confidence limit , after the subtraction of the contribution of monitored point sources .
Other possible foreground contributions have been assessed and are expected to have negligible impact on this result .