Different queries with the same value unit. Why 2 Y-Axis?

Grafana Time Series Panel
1

Hi,

I using Grafana v10.4.0 (03f502a94d) in a Docker Container and I display 4 different queries in one Time Series Panel. This shows the Power consumptions and gerneration of my Photovoltaiksystem.

My Problem is, that 3 of the 4 queries map Grafana to the same Y-Axis, but for the fourth One Grafana creates anonther Y-Axis. Though all 4 queries are the same Unit (Wh).

Here is one of the used query. All 4 are the same but variant in the _measurement filter:

from(bucket: “db0”)
|> range(start: v.timeRangeStart, stop: v.timeRangeStop)
|> filter(fn: (r) => r[“_measurement”] == “pv.HomePv_P”)
|> filter(fn: (r) => r[“_field”] == “value”)
|> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: true)
|> yield(name: “mean”)

example

What I need to configure in Grafana to map all 4 queries to the same Y-Axis?

Best Regards
Thomas