The horizontal axis shows the time; relationships positioned towards the leftmost area of a diagram occurred at the start of the data interval considered, and those at the rightmost end occurred at the end of the data interval considered. The vertical axis shows the period; lower period bands (higher frequencies) are shown near the top and higher bands (lower frequencies) are near the bottom. Lower bands would be of interest to investors with short term horizons, whereas higher bands would be of interest to investors with longer term horizons.
It hasn't yet been recognised by the major cryptocurrency sites such as Coinbase but why did it get so popular?

While the current level of currency support leaves room for improvement, it is necessary to remember that it is still early to make the final judgment on the Binance’s policy, particularly regarding the outcomes of its initial implementation at the time of writing this Binance.US review. The platform advises holders of currently unsupported assets to use services of other custodians in any form (cold storage, hot wallet) while other currencies await approval.
There is not one single location for Wikipedia views data over the historical data interval required. Wikipedia views data from the start of 2015 onwards can be retrieved using the official mwviews python library which connects to Wikipedia’s pageview API. Previous historical data can be retrieved in one month buckets from a separate website (http://stats.grok.de). Data was programmatically retrieved here from both sources, and then merged to produce a single time series.