Dedispersed dynamic spectra and frequency averaged time series of the brightest burst from FRB 20220912A detected with the Westerbork-RT1 25-m telescope. The central observing frequency was 332 MHz with a 64 MHz bandwidth. The data are dispersed using a DM=219.46 pc cm^-3. The data is plotted at a time- and frequency resolution of 4.096 ms and 0.125 MHz. We mask the top subband of 8 MHz because of a significant decline in sensitivity. The burst has a fluence of 892 +/- 179 Jy ms. The MJD of the burst with respect to infinite frequency at the solar system barycentre (in TDB) is 59922.8202534060. This burst is part of ATel#15817