Friday, October 25, 2013

Index Value Plot

Line chart plot of emissions values over a time period extending from 1990 to 2005 for five data sets. The level in 1990 serves as the index value of 100. The trend for trucking is steadily upward, and the most pronounced of all, approaching 180 in the year 2005. The trend for rail is steadily upward, approaching 130 in the year 2005. The trend for air oscillates slightly and approaches 120 in the year 2005. The trend for pipeline is upward about 118 in the year 1997, then downward and approaches 82 in the year 2005. The trend for water oscillates wildly, hitting a low of 55 in 1996 and trending upward to end near 140 in the year 2005.

This is an index value plot charting the greenhouse gas emissions between the years 1990 and 2005. This would be useful information for those making environmental changes to these industries.  The companies can track to see if their efforts are working or where they should direct their concentration.
This map was found at:
http://www.fhwa.dot.gov/policy/otps/innovation/issue1/policies.htm
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