It's a display problem. The spike appears at 2015-09-08 12:00ish, but is not visible at the same time on the shorter timescale views. Edit: yes, it's aggregati

It's a display problem. The spike appears at 2015-09-08 12:00ish, but is not visible at the same time on the shorter timescale views. Edit: yes, it's aggregating things incorrectly at 14+ days. Some parts of the graph appear to be 'aggregate' (spike), others appear to be 'average' (low points).