Looking for SF after influxdb integration

I integrated influxDB with chirpstack, to follow the evolution of my sensors. My goal is to observe the SF, and the measurement holes. Thanks to the documentation, with the tag “device_uplink”, I was able to find the SNR and the RSSI, sufficient to observe the measurement holes. But I can’t find the SF. Can anyone tell me where to find it, please?

Look for Data Rate (DR), not SF. that should point you in the right direction. The conversion from data rate to SF varies by region and is explained here: LoRaWAN Data Rates - blog.dbrgn.ch

thanks for helping me. DR seems like a good track, even though I can’t display the DR for a given sensor yet. I keep searching on the influxDB documentation, and I would put the solution here once found.