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<br />I <br /> <br />I <br /> <br />I <br /> <br />TABLE 1. AVERAGE ~IONTlILY TE~1FERATUr-.ES AT 20CO-FOOT INTERVALS WITHIN TIlE AIR <br />MASS WHICH HOVES ACF;OSS TIlE GORE RA."GE, BASED ON THREE-YEAR SA:-IPLE OF RADIC60NDE <br />DATA FROM RELEASES AT GRr'\ND JUNCTION, COLORADO, WITH SUFERIHrOSED AVERAGE SURFACE <br />~'EHPE RATURES AT BERTHOUD PASS AND CLIMAX 2~'W FOR THE MONTHS OF JULY, AUGUST, AND <br />SErTE~IBER. (oF.) <br /> <br />I <br /> <br />Elevation <br /> <br />Jan. Feb. Mar. Apr. Hay June July Aug. Sept Oct. Nov. Dec. <br /> <br />I <br /> <br />14,000' <br /> <br />8 <br /> <br />8 <br /> <br />7 12 <br /> <br />23 <br /> <br />33 <br /> <br />36 <br /> <br />35 <br /> <br />32 <br /> <br />22 <br /> <br />13 <br /> <br />13 <br /> <br />BEW, <br />FREEZING <br /> <br />ABOVE FREEZING <br />PRHlARILY DAYTHIF. HOURS <br /> <br />BE La>I <br />FREEZING <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />12,000' <br /> <br />14 <br /> <br />15 <br /> <br />15 <br /> <br />21 <br /> <br />33 <br /> <br />43 <br /> <br />46 <br /> <br />45 <br /> <br />41 <br /> <br />28 <br /> <br />19 <br /> <br />19 <br /> <br />I <br /> <br />/Berthoud Pass 11,314' <br />'Climax 2M, 11,300' <br /> <br />51 <br /> <br />50 <br /> <br />42 <br /> <br />I <br /> <br />I <br /> <br />10,000' <br /> <br />20 <br /> <br />22 <br /> <br />23 <br /> <br />34 <br /> <br />43 <br /> <br />52 <br /> <br />55 <br /> <br />54 <br /> <br />50 <br /> <br />36 <br /> <br />25 <br /> <br />24 <br /> <br />I <br /> <br />I <br /> <br />The daily range between minimum and maximum at these two stations is <br />. 220. 0 <br />approxl.ro.ately The minimum temperature would be 11 cooler in tho <br /> <br />I <br /> <br />early morning hours. The maximum would be 110 warmer in tl1.e early after- <br /> <br />I <br /> <br />noon hours than the average values shown. By contrast, the daily range <br /> <br />of temperature at Fraser, located in the valley to the north of Bcrthoud <br /> <br />I <br /> <br />Pass and nearly 3000 feet lower, is approximately 400. Early morning <br /> <br />temperatures are colder at Fraser than at the top of Berthoud Pass. <br /> <br />I <br /> <br />Conversely, the maximum temperiltures jn the valley are more than 100 <br /> <br />I <br /> <br />I <br /> <br />-10- <br />