This example file is from the Open Data Portal. The data is from a carbon monoxide emissions study conducted by Environment Canada. The three columns represent results from 1990, 2000, and 2013.

This example file is from Statistics Canada. The data is adapted from New cases and age-standardized rate for primary cancer (based on the February 2014 CCR tabulation file), by cancer type and sex, Canada, provinces and territories. The columns represent new cancer cases (age-standardized rate per 100,000 population) from 2006 to 2010.

This example file is from the U.S. Centers for Disease Control and Prevention. The data is from Diagnosed Diabetes, Age Adjusted Rate (per 100), Adults - Total, 2013.