finding area under the curve

Hi,

I dont know if this could be asked here..

I have a set of data plotted in form of a line graph.. I need the area covered by the curve..

Tha data is as follows

Time Data1 Data2
0 0 0
1 0.385400742 1.096405029
8 0.70739907 1.141392231
30 1.001959324 1.437935472
120 1.232143879 1.886299849

Time is plotted on X-Axis.. and Data1 and Data2 is plotted on Y axis..

I need to calculate the area between these two curves.. which is basically A(Data1) - A(Data2)

Regards,
Vaibhav

See here for area under curve
http://people.stfx.ca/bliengme/Excel...UnderCurve.htm