| Freq. (GHz) | Horn No.a | FWHM (arcmin)b | Ellipticityc | Peak gain (%)d | X-Y Mismatch (%)e |
| 30 | 28 | -0.1 | 0.34 | 0.34 | 0.02 |
| 44 | 24 | -0.44 | 0.84 | 1.14 | -0.02 |
| 44 | 26 | 0.24 | -0.58 | -0.58 | 0.11 |
| 70 | 23 | -0.96 | 0.70 | 2.84 | 0.10 |
| 100 | 2 | -0.26 | 1.46 | 1.37 | 0.05 |
| 143 | 2 | -1.22 | -3.35 | 2.40 | 0.10 |
| 217 | 5 | -0.15 | -0.81 | 3.95 | -0.01 |
| 353 | 6 | -4.8 | 2.02 | 10.3 | 0.36 |
Notes. (a) The selected horns can be identified in Fig. 4. At 44 GHz two horns are included because of their very different behaviours due to their location in
the focal plane; (b) 100 
(best-worst)/best, average of X and Y detectors; (c) 100
(best-worst)/best, average of X and Y detectors; (d) 100
(best-worst)/best, average of X and Y detectors; (e) best-worst, % power integrated within the 3 dB contour.
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