Based on the hourly chart below, it certainly appears as if 1600-1640 has become the trading range for the S&P 500:
Note that this correction continues to look healthy. The chart above depicts a double-bottom ("W") formation, typically a bullish occurrence.
Stepping back further, the S&P 500 daily chart also continues to look bullish:
As I've been writing, so far so good regarding this correction....