-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
There is one effect that might also contribute: How the number of tracked aircraft is calculated: https://github.com/wiedehopf/graphs1090/blob/master/dump1090.py#L307 So ... you can have messages in the message count that belong to an aircraft that's not counted as being tracked. Really you can argue the opposite as well if you were to use 60 seconds as a cutoff (data collection happens every 60 seconds). Then you have aircraft that send one message in a minute and count as "tracked" while well are you really tracking them and should they count? 30 seconds is at least in my opinion a good value that doesn't inflate the number of aircraft tracked as much.