Starting December 23rd and ending around December 26th Wikipedia posted incomplete page metric files. The lack of reporting is true across almost all artists, and appears as a significant dip on the first day with some missing days and then back to normal by the 27th. As soon as completed files are posted, we will backfill the days appropriately.

Many artists, but not all, rebounded on the 28th with what seems to be the missing page views from the previous days. A significant spike on the 28th following the previous trough should be discounted as a network wide effect.