Here is an hourly chart of day session e-mini trading. The Chicago purchasing managers number came out at 9:40 am this morning and triggered a high volume, downside breakout from the trading range of the past two days (blue rectangle and red arrows). I think this means that the drop from the September 23 top at 1075.75 has further to go.
I have drawn a descending trend channel on this chart. Over the next couple of days it reaches down roughly to 1020. There is midpoint support at 1015. I now believe that this correction will end late this week or early next in the 1015-1020 range (green oval).