statsmodels/statsmodels — pull request #1481 by jseabold (2014-03-15 04:45:00+00:00)
Title: ENH: Add weekly co2 dataset

Add another public domain dataset. This is weekly atmospheric co2 readings. Similar to el-nino. There is a trend and seasonality. R datasets ships with a monthly version. It has missing values. I've left them in.