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Weights of observation points in PEST with MODFLOW


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Hello folks

I have been calibrating a large regional-scale model and noted the calibration error does not go lower than 2000, knowing that I have around 900 observation points. When I looked into rec file produced by PEST, I noted every point has a weight of 1.960. This explain why the error is large. Is there a way to change the weights of observation points as I could not see this option anywhere in GMS.


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