Observation test instance - time series Time series 1 2005-06-17T09:00:00+08:00 2005-06-21T09:00:00+08:00 3.45 2005-06-17T09:00:00+08:00 19.3 2005-06-18T09:00:00+08:00 17.1 2005-06-19T09:00:00+08:00 16.5 2005-06-20T09:00:00+08:00 25.8 2005-06-21T09:00:00+08:00 29.2