I’m noticing missing price data for Ethereum across multiple exchanges. For example, GDAX exchange is missing ETHUSD price feeds for May 2, 3, 7 and 8 of 2023.

Kraken is missing ETHUSD price data for May 1, 2, 3, 6, 7 and 8 of 2023.

Binance is missing ETHUSDT price data for April 24 - May 1, and May 7 - 8.

These are just recent examples, but going back further in time there are many examples of gaps in crypto price data.

Are they any crypto markets in the data library which contain few gaps in pricing data? Any reason for these gaps?