data : array-like
Data array or object that can be converted to an array.
mask : numpy.ndarray (bool), optional
A boolean mask with the same shape as data, where a True
value indicates the corresponding element of data is masked.
Masked pixels are excluded when computing the image statistics.
mask_val : float, optional
An image data value (e.g., 0.0) that is ignored when
computing the image statistics. mask_val will be masked in
addition to any input mask.
sigma : float, optional
The number of standard deviations to use as the clipping limit.
iters : int, optional
The number of iterations to perform sigma clipping, or None to
clip until convergence is achieved (i.e., continue until the
last iteration clips nothing) when calculating the image
statistics.
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