Tech Community Live: AMA – Endpoint analytics and user experience

Is it possible that some sort of Reports in Endpoint Analytics - Startup Performance like "Startup Processes" is including only the data of maybee the last 30 days or something like this? Because we see entries for Defender and ATP which is installed on any device. But only for ~6.000 devices (half of the devices) is counted. This is maybee because of easter holidays the last weeks? Sadly altough documentation don't give a answer on which base the data is aggregated.