A head and shoulders top points to the previous low. Support around 1,550. I would expect that the previous bottom of 1,600 will be retested. If that level holds, the double bottom scenario would be the best hope. Otherwise, the arithmetic target of 990 should be kept in mind.
Long term supports in yellow, green and pink.
1,670, or thereabout, is the next support for the index. Next support below 1,600. A top points to 5.2. I might use the list to give important updates while travelling. The list will not be used by anyone other than me.