Deep Tide TechFlow News, December 3rd, Coinmarketcap data shows that the altcoin season index has broken the annual high, currently reported at 83. It is understood that the CMC Cryptocurrency Altcoin Season Index is a real-time indicator used to determine whether the current cryptocurrency market is in an altcoin-dominated season. Data shows that in the past 90 days, 83 of the top 100 cryptocurrencies by market cap have outperformed Bitcoin.