The 45th Laboratory Intercomparison Study (LIS 45) has been completed. Results of all laboratory intercomparison studies beginning with LIS 8, conducted in 1985, and continuing through LIS 45, conducted in the fall of 2011, are posted under the STUDY RESULTS tab. For each study, you will find (1) a Study Summary that lists a breakdown of the statistical distribution of the results, (2) Ring Diagrams that depict the results graphically, (3) Study Data HTML tables that list sample by sample measurements for each laboratory, and (4) access to Study Data CSV, which is a downloadable comma-separated-value file that can be loaded into a spreasheet.

Thanks to all laboratories that participated in this important WMO Global Atmosphere Watch programme. The next study, LIS 46, will begin in April 2012.

Send any questions or comments to the manager@qasac-americas.org.