Based on weekly data the Bitcoin Dominance is in a falling trend. It started with 70s and now came down all the way to 57. I believe the critical level to watch will be 52. Because if we go all the way back to the July 2017 (where altcoins outperformed BTC) If the BTC price stays between 55K to 60K we may see the ALT coins increase. However we are not yet ready for a ALT coin season blastoff. For this to happen the dominance need to be between 52 to 55 and we need to see the BTC price break above the 60K.