Percentage increase in the local noise level as a function of distance from the centres of sources of various integrated flux density levels. The increase in local noise level is defined as the percentage at which the image pixel standard deviation in regions close to sources is higher than the standard deviation of pixels away from contaminating sources. Here statistics are determined for compact and isolated LoTSS-DR2 sources that are grouped into bins of different integrated flux density levels (for direct comparison with LoTSS-DR1 through Fig. 11 in Shimwell et al. 2019) which are shown with different colour markers. The integrated flux density bins were selected to each contain the same number of sources (239) and the errors are 95% bootstrap confidence intervals.