Thanks Wolfgang,

Interestingly enough, the sensors.rrd file gets populated with valid data, interspersed with lines of "... -nan -nan -nan... -nan", so the sensor data is being read from the Weather Radio station. On the other hand the weather.rrd file only gets filled with either -nan or 0.0000000000e+00. Furthermore, even after a fair bit of time, the web page does not show any sensor data. Even though I installed the web interface according to the instructions provided and every file should be in the appropriate place, I will dig a little further in case of a problem on my part.

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