This dataset depends on the following independent variable (i.e, grid):
grid: /T (months since 01-Jan) ordered (16 Dec - 15 Jan) to (16 Dec - 15 Jan) by 1.0 N= 13 pts :grid
so there will be 13 links below for the different files.
You may want to get a utility like wget which can download sets of files. For example (all one line)
wget -r -l2 -nd --no-parent -e robots=off -v --relative 'http://digilib.icpac.net/SOURCES/.ENACTS/.version0/.CIPH/.CSMT/RHCondProb/ngridtable/T+partial/T+differences/T+integral/downloadsarcinfo.html'
single quotes are necessary in unix to protect the url from expansion; probably necessary in other cases as well