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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CEDAR CREEK, TX (BASTROP COUNTY) CEDAR CREEK, TEXAS (Bastrop County). Cedar Creek is beside the creek for which it is named eleven miles west of Bastrop in west central Bastrop County. The area was settled as early as 1832, when Addison Litton was granted a league of blackland prairie on both sides of the creek.