The PSK Reporter web application accepts signal reports and maps them based on various queries. Here I retrieve my reports and look for strong signals from far away. 20m 
30m
http://found.ward.bay.wiki.org/assets/pages/k9ox-qsl-log/log.html?uniq=1&snr=1&miles=3000 HEIGHT 600
We upload from pc to view here with javascript.
pages/k9ox-qsl-log
Parameters select for grid or call prefix, snr or miles minimum, or uniq calls.
We pull data from the site and extract higher resolution grid squares to improve map markers.
curl -s 'https://pskreporter.info/cgi-bin/pskdata.pl?adif=1&days=7&receiverCallsign=k9ox'| perl -ne 'print "$1\t$2\n" if /<CALL:\d+>(.*?)<.*?<GRIDSQUARE:\d+>(.*?)</' | sort | uniq
We use ruby to merge new data with our accumulated logbook.txt.
# merge new data with existing callbook.txt # usage curl ... | amend.rb def hash lines Hash[lines.map{|line|line.chomp.split(/\t/)}] end old = hash File.readlines('callbook.txt') now = hash STDIN.readlines puts old.merge(now).map{|k,v| "#{k}\t#{v}"}
See FT8 at K9OX