As I said in my reply to amatecha the existence of EM phenomena caused by earthquakes is well established but that relationship isn't yet well quantified—we can

As I said in my reply to amatecha the existence of EM phenomena caused by earthquakes is well established but that relationship isn't yet well quantified—we can't turn the effect on to just suit our testing. That's the advantage of amateurs monitoring 24/7. We'd eventually catch it this way I reckon.