The ability to make a log of absolute RF power levels centered at a given frequency, and of selectable bandwidth,  over specified time intervals is a very powerful capability.  Even more so, in portable or mobile situations such as field strength monitoring of both wanted and unwanted signals where an accurate, yet simple and low cost solution is desirable.   SDRuno makes it easy to record power and SNR readings as a .CSV file,  as is described in this new video guide: