You will see VE3KCL on the map and other callsigns starting with 0. If you are interested in decoding the telemetry Dave VE3KCL provided the spreadsheet at the bottom of the page below. The full telemetry comes from the VE3KCL spot and the subsequent 0xxxxx spot.
http://qrp-labs.com/ultimate3/ve3kcl-balloons/ve3kcl-s4.html
You can read more about this current flight here:
http://qrp-labs.com/ultimate3/ve3kcl-balloons/ve3kcl-s6.html
I am not associated with anyone in the project, but I do follow the flights with interest.
73 Gary KC1AWS