Skip to main content
. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Environ Ecol Stat. 2013 Aug 30;21(3):411–433. doi: 10.1007/s10651-013-0261-4

Table 1.

Summary of observations used for modeling

Type of site No. of sites Start date End date No. of measurement
AQS 20 1999–01–13 2009–09–23 4178
MESA fixed 5 2005–12–07 2009-07-01 399
MESA home 84 2006–05–24 2008–02–13 155
MESA snapshot1 177 2006–07–05 2007–01–31 449
1

Snapshot measurements where carried out during three 2-week periods centered on the Wednesdays of 2006–07–05, 2006–10–25, and 2007–01–31