A look at recent charts shows that Safemoon has been on a downtrend since early November. Safemoon has also not been doing very well since its last all-time high around April 21, 2021. Despite rising in mid-May, the next time Safemoon saw bullish growth was at the end of October.
At each point information from neighbouring data is used. As the time series considered are finite, the areas at the start and end of the data (especially at higher period bands) will not have all the data required. One solution to make computation possible, chosen here, is to pad the time series with zeros where required. However, the zero padding will impact the reliability of the results. It is standard to use a cone of influence to represent this difference in reliability of results. Pale colours represent those areas outside the cone of influence with less reliable results (as seen on Fig 3). Higher period bands require more data for computation resulting in the cone shape.

The original cryptocurrency, Bitcoin, is a capped cryptocurrency. This means after 21 million Bitcoins are mined, no more will be mined.
Polygon is an Ethereum token that powers the Polygon Network, which aims to provide faster transactions on the Ethereum blockchain.