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The Himalaya by the Numbers: A Statistical Analysis - Himalayan ...

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70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

Member Ascent Rates for 8000ers and<br />

Cho Oyu and Everest Commercial Routes (1950-2006)<br />

1970-1974 1975-1979 1980-1984 1985-1989 1990-1994 1995-1999 2000-2004 2005-2006<br />

8000ers w/o CHOY-EVER Com Rtes CHOY Com Rte EVER Com Rtes<br />

Chart A-14: Member ascent rates <strong>by</strong> expedition year for<br />

8000ers, Cho Oyu, and Everest from 1970-2006<br />

Member Ascent Rates for Ama Dablam, Cho Oyu, and Everest<br />

on Commercial Routes (1990-2006)<br />

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006<br />

AMAD CHOY EVER<br />

Trend (AMAD) Trend (CHOY) Trend (EVER)<br />

Chart A-15: Member ascent rates <strong>by</strong> expedition year for commercial routes<br />

on Ama Dablam, Cho Oyu, and Everest from 1990-2006<br />

Ascent <strong>Analysis</strong> 53

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