The source of the data is Larry, W6LVP who captures the data from WSJT-X (WSPR decoding and reporting program) running on his and Danie's PC. WSPRnet.org plays no part in this process. There is only 2 hours of data in the display, if Danie doesn't hear W6LVP et al or vice versa within the two previous hours, the display is blank. The time scale is your local time. WSPR SNR greater than about -20 yields Q5 SSB reports.