In Table 4 we list the flux densities obtained for the period 1993-1994. This table is published electronically; the data are also available at CDS in Strasbourg. The table is arranged as follows:
Column 1: Observing date,
Column 2: Observing frequency,
Columns 3 and 4: Measured flux density and its error. The quoted error is the root of the quadratic sum of the individual observational error (dependent on weather and pointing offset) and the percentage calibration uncertainty as described in Sect.2.