These gaps represent areas where there were no prints during regular trading hours for the S&P 500 E-mini futures contract using hourly bars.
Currently, there are gaps above and below the market. To me, this indicates greater actual volatility is likely in store over the coming months, as this market tends to fill its gaps. Note how many gaps were filled, almost to the tick in February of this year.
Keep your reward-to-risk high and know and control your max risk at all times.
To good trading,
Todd