Note that there’s also a beam from north to south that is drawn over your “me”. That’s a fat line though, indicating that the gateway is far away in the north (and the point at which some data was received is more to the south). Also note that mapping (to create the map) depends on a lot of factors, and often happens outside. If possible then get in touch with your local community. Having a university in town will surely help getting help! 
TTN provides very basic access to the data in TTN Console. To see graphs of historical values, you’ll need to set up TTN to forward the data to some third party dashboard. For example, see the integrations such as AllThingsTalk, myDevices Cayenne (needs the node to use a specific data format), TagoIO or ThingSpeak. There are many, too many maybe…