'InfluxDB Data Explorer: different results when re-running query?

Going through the Queries and Data Model section of Time to Awesome (therefore you can tell I'm just getting started with InfluxDB), I've noticed a seemingly strange behaviour: once the data (as provided in the tutorial) is ingested, running exactly the same query repeatedly outputs different data every time.

Last time I ran, this was the output: enter image description here 3 tables were returned.

Alright, let's try again: enter image description here Interesting, 5 tables were returned...

The tutorial itself states that 12 tables are created based on the input data. So what's happening here? Am I missing something obvious?



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