Pat Meyers, Nelson Christensen, and I have been investigating coherence lines between H1 and L1 in the 20-45 Hz band (data generated from stochmon, found here). We cross-referenced these lines with using results from STAMP-PEM and the coherence tool.
You can find results for our analysis around 25 Hz here. Attached is an analysis of coherence lines at H1 from 36-42 Hz. There are interesting lines at approximately 41 Hz and 38.7 Hz.
Our corresponding results at L1 can be found here.
Pat, Nathaniel, Nelson