Nifty at closing time compared to opening is at same level

Today (24-6-09) Nifty opened at 4284 with a gain of 37 points, after moving down to 4218 and upwards up to 4307, at 15.30 it was at 4287 (just near the opening level). On averaging Nifty closed the day at 4293. Tomorrow being settlement day for June series derivatives, volatility can be expected in the range 4325 - 4230. Today's high was 4307 against the high of 4305 on 24th June,2008.(Yesterday Nandi mentioned the low only).