This is an inefficient format, so be warned: you are going to get a datafile.
The OLE2 CAM3p1 HINDCAST OBS Total (convective and large-scale) precipitation rate data are available as a columnar table, i.e. as multiple columns of data, intended primarily to be read. However, if you have other intentions for this table, or simply do not like the default choices, you may want to choose from the columnar tables with options.