I have been working on excel to graph some data to get a better idea of what is going on. But with this data set I have with 5,099,156 observations for the week I am looking at, it is not managable in excel. (Yes it is off of some tick data.) I have three columns, DateTime, AveragePrice, and value. Does anyone know of a program other than excel to graph this data to allow me to scroll though the data to get an idea of what is going on with it?