More than 10 variables?

Let me start by saying I’m BRAND NEW to Grafana. I’ve looked in the docs and can’t find an answer…

I’m using Grafana with CHORDS to chart weather data. We have 11 variables (numbered 2-12) to be charted (listed below) but Grafana doesn’t appear to recognize variable 12. Is there any way to resolve this?

Variables being charted:

Soil Moisture Content…2

Battery Voltage…3
Atmosphere Pressure…4
Atmosphere Temperature…5
Atmosphere Humidity…6
Soil Temperature…7
Wind Speed…8
Wind Direction…9
Rain Last Minute…10
Daily Rain Total…11
Ground Level Temperature…12

Thanks,

Dennis