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Figure 9. Total Degree -days, Jan. to June (1986 to 2009), Seneca IIW Mine, SCC, Routt Co., CO - 2009 <br />:11 <br />7,600 <br />7,400 <br />7,200 <br />7,000 <br />0 6,800 <br />N= <br />6,400 <br />6,200 <br />3-M <br />'Hayden Station 053867 Long Term Average - Period of Record : 1909 -2009 <br />