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Temperature anomaly on BS18B20 + NodeMCU on Tingspeak

Temperature drops occasionally from 59+C to -13C or to other random values. Used sketch and info from this site: http://internetofthinking.blogspot.com/2016/02/upload-ds18b20-temperature-sensor-data....
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Can't extract basic data using ThingspeakHTTP

I don't know anything about HTML, but I want to extract the % probability of the Northern lights being visible from this webpage http://aurorawatch.ca/. I entered this into the URL field, and selected ...