Calculating QT interval duration Count the number of squares from the beginning of the QRS complex to the end of the T wave. Multiply this number by 0.04 second. The normal range is 0.36 to 0.44 second, or 9 to 11 small squares wide.alculating QT interval duration Count the number of squares from the beginning of the QRS complex to the end of the T wave. Multiply this number by 0.04 second. The normal range is 0.36 to 0.44 second, or 9 to 11 small squares wide.
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43rd Annual Quad-County Walnut Institute (76KB) PDF : 1/29/13: Tree & Vine IPM Update Breakfast Meetings (104KB) PDF : 4/12/12: February 2012 (263KB) * Quad County Walnut Institute * Orchard Compaction * Tree Planting * Scale Pests. PDF : 1/9/12: Low Emissions Nut Harvesting Field Day (233KB) PDF : 9/30/11: February 2011 : Quad-County Walnut Institute Meeting: PDF : 2/10/11: July 2009 : Ag Technology Field Day & Irrigation & Trade Show Meeting: PDF : 7/13/09: March 2009 *Tri-County Walnut Institute 03/17/09 *Walnut Blight *Coddling Moth *Ground Squirrels *Orchard Sanitation *Newly Planted Tree Care *Zinc *Pest Hotline *IPM Update Breakfast Meetings Resume: PDF : 3/2/09: August 2008