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Table 2
Methods used to calibrate the radiometers.
| Frequency | Calibration | Primary systematics | Relevant paper sections | |
| Absolute | Relative | |||
|
|
||||
| 30 GHz | CMB dipole | 4 K | ADC non-linearities, variations of Tnoise with time | Sect. 3.1, 3.2, 4.3 |
| 44 GHz | CMB dipole | CMB dipole | Optical systematics, bandpass response of the radiometers | Sect. 3.1, 4.1 |
| 70 GHz | CMB dipole | CMB dipole | Same as for 44 GHz | Sect. 3.1, 4.1 |
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