NAME: semiMinMax PURPOSE: For array y, return min and max values within 3 standard deviations from the mean CALLING SEQUENCE: semiMinMax, y, ymin, ymax INPUTS: y = array of 4 or more elements KEYWORD PARAMETERS: MODIFIED = use modified sigma which uses kurt. & skew. results in a more liberal acceptance of data OUTPUTS: ymin = minimum value within 3 stdev's of mean ymax = maximum value within 3 stdev's of mean AUTHOR: ? MODIFICATION HISTORY: 10/96 R.Baldwin; replaced stdev w/ moment 03/99 R.Baldwin; added MODIFIED keyword Copyright 1996-2013 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved.