As we all know BTC has its highest price was 17.12.2017. Then BTC price was almost 20000. And after that price has free fall for few months till now.
I have done some calculations of ratio between price of specific coin on date 17.12.2017 and today. We can see that some coins have bigger ratio than BTC, and other lower. But, nothing of this don't show us something to be important for prediction.
Instead of that if we compare graphs from www.coingecko.com we can see that after 17.12.2017 BTC price has started to fall. But other coins don't follow that, as their price still rises up.
Reason for this is that BTC investors mostly afraid of drops in BTC coin price, started to sell their BTC and begin to buy other coins. And after fluctuations in coin market and sell/buy actions saturated other coins price started to fall as well.
Data from this table can be used as information to see which coin is attractive to investors and which is not.