<li>1. To calculate a statistics on <i>any type</i> of parameter  <i>drag</i> it from the Parameters tree and <i>drop</i> onto the panel  
<li>2. After dropping the parameter select function to apply (<i>click to select</i>!!! to open the menu)
<li>3. Statistics can be calculated on Time Interval or TimeTable/Catalog intervals
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Notes:</b>
<li>1. countTrue function accpets only boolean parameters. It calculates the numbre of true occurences in boolean Parameter.  
<li>2. Covrage represents the number points used in the calculation devided by the theorical number of points in the specified time interval.