A Piece of the Pie--- work in progress---                  



DATA REPRESENTED (side two):

Methyl Chloroform
Year parts per trillion
1978 58
2001 40
CFC-11
Year parts per trillion
1978 140
2001 257
CFC-12
Year parts per trillion
1978 259
2001 539
CFC-113
Year parts per trillion
1983 28
2001 81

SOURCE:  Carbon Dioxide Information Analysis Center,
                       ALE/GAGE/AGAGE Network

 

Greenhouse and Ozone-
Depleting Gases Study
18" diameter x 3" (freestanding)
found metal and glass
Brent Bukowski 2005

Pat Forsyth photo