'How to fit several Layout histograms (12x12)? (python)

I want to do Gaussian fitting on the Layout histogram(12x12).

Variable name : pivoted 
Pivoted's Type : Data Frame 
Pivoted's Size: (312,144)
The number of columns is different for each row of 'pivoted'.

pivoted.plot.hist(
    bins = 68,
    subplots=True,
    layout=(12, 12),
    figsize=(20 ,20),
    range = (-1000,1000),
    rwidth  = 1000,
    sharey=True)

enter image description here

How can I fit all the layouts?

Help me please.



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