Trading session can be described in 5 High Frequency stages :
1) 09:00 27158 lots sold in 1 min from 978.75 -975.75
2) 10:36 17101 lots bought in 1 min from 966.75-967.50
3) 12:54 16234 lots bought in 1 min from 971.50-973.50
4) 01:30 p.m. 20671 lots bought in 1 min from 974.50 - 976.75
5) 01:34 p.m. 13402 sold in 1 min from 977.25 - 975.00
5 min of trading have decided course of the day. Voila !