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ortho-NH\ :sub:`2`\ D
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This script runs the optically thin and thick approximations for the fit. 
The optically thin approximation assumes that the total optical depth of 
the line is 0.1, and therefore the lineshape is defined by the hyperfine 
structure relative weights.


.. literalinclude:: ../samples/pyspeckit_oNH2D.py
   :language: python