Hello, Moderators: I've noticed a lot of values in the accelerometer readings for the L-dopa data contain several rows of NaN values. How are we meant to understand these. Was the subject just mellowing or was there a technical malfunction with the sensors in the device that was recording? Also as a general question to the other participants: How did you deal with the NaN values? I've been scripting in python and using .to_numeric() and then .dropna() but i still seem to end up with some NaN values.