3 ms·but really, what about this sine wave? is this some kind of an error in data?by naraga 7y agobut really, what about this sine wave? is this some kind of an error in data?Anon84 7y agoLooks like a typical seasonality curve. Things tend to repeat at the same period of the year (say, happy in summer, sad in winter). You can see similar patterns at different time scales (weekend vs week, day vs night etc)naraga 7y agobut there is this huge ~4 yr cycle