Hi
Have you tried this:
[[chart7]]
title = Radiation and UV Index last 7 days
time_length = 604800 # Last 7 days
[[[radiation]]]
name = Radiation
zIndex = 1
color = "#ffc83f"
[[[UV]]]
yAxis = 1
yaxis_min = 0
yaxis_max = 14
color = "#90ed7d"
y_label = "UV"
name = UV Indeks
zIndex = 2
If you're are using the GW1000 driver, then you need this in the weewx.conf:
[StdCalibrate]
[[Corrections]]
# For each type, an arbitrary calibration expression can be given.
# It should be in the units defined in the StdConvert section.
# Example
radiation = luminosity/126.7 if luminosity is not None else None
Gert