Hello Radha,
Need few clarifications on your calculations for 31-aug-2009
NIFTY MININIFTY SEP 24 FUT values taken from BHAVCOPY are
INSTRUMENT,SYMBOL,EXPIRY_DT,STRIKE_PR,OPTION_TYP,OPEN,HIGH,LOW,CLOSE,SETTLE_PR,CONTRACTS,VAL_INLAKH,OPEN_INT,CHG_IN_OI,TIMESTAMP,
FUTIDX,MINIFTY,24-Sep-2009,0,XX,4691.1,4753.2,4641.2,4737.9,4737.9,86448,81294.17,780860,73820,28-AUG-2009,
FUTIDX,NIFTY,24-Sep-2009,0,XX,4705,4753.8,4643.2,4737.8,4737.8,583771,1372712.77,24348150,1302200,28-AUG-2009,
As per the values the levels are as follows
NIFTY
L3 = 4707
L4 = 4676
H3 = 4769
H4 = 4800
MINI NINFTY
L3 = 4707
L4 = 4677
H3 = 4768
H4 = 4799