I also know nothing about the limitations of the temperature sensors on smartphones (I don&#x27;t even know of any phones that have temperature sensors).<p>What I do know is that whilst teasing signals out of noisy data is achievable when the data are unbiased, the possibility of biases makes it significantly harder, especially when you don&#x27;t know what the biases might be. This can be a significant problem with all sorts of data that you might think were fairly good, including both in-situ and satellite measurements.