Effect of retuning software defined radio to 1420.405MHz on output of ezRA suite software 22-23/10/2023

The following link will download the SDRSharp IFAverage data set from last 24 hours – resulting from retuning the SDR to 1420.405MHz – not quite sure why plots from ezRA suite below are showing 1420.430MHz rather than 1420.405MHz?

http://astronomy.me.uk/wp-content/uploads/2023/10/SDRSharpIFAvg_Data-231023.zip

Chronlapse screenshot demonstrating tuned frequency on SDR# software:

Plots from this data (click on each for larger picture):