Since my first/last post in the Questions board I have managed to get a good grip on this amazing Network and on the work of so many altruist people.
I am trying to get data from the ImpalaShell about ACAS. But I cannot get replies, so I guess that there is no data before a certain datetime. I checked with the command:
SELECT COUNT(*) FROM acas_data4 WHERE hour<=1564524000;
on many dates (the one there is on July 31st 2019) and the earliest I could get messages from is January 1st 2020 at 00:00 UTC. I also checked on many other tables and the result is the same: count 0, except for the state_vectors_data4.
I wanted to know if this is an issue or if there is data only after January 1st 2020.