To compute the baseline of the signal

[kongkongqlg]

''Two median filters are applied for this purpose, of 200-ms and 600-ms. Note that this values depend on the frequency sampling of the signal.
from scipy.signal import medfilt
...

# median_filter1D
baseline = medfilt(MLII, 71) 
baseline = medfilt(baseline, 215) 

''
How to compute this values according to my frequency sampling? And what's your frequency sampling?