COMPOSITION TRENDS ACCORDING TO TOR,1990 - 2007WHW, 10/30/07updated 1/23/08

NUMBER OF VALID CARBON MEASUREMENTSIN NETWORK

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

DE-SEASONALIZED EC/TC M = median of all 1990-2007 daily network medians in given monthA = median of the twelve M. SCALE EXPANDED BY 50%

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA

MEDIAN AND INTERQUARTILE RANGE ENTIRE NETWORK, ALL VALID DATA