This dataset depends on the following independent variable (i.e, grid):
grid: /P (mb) ordered [ (1000) (925) (850) (700) (600) (500) (400) (300) (250) (200) (150) (100) (70) (50) (30) (20) (10)] :grid
so there will be 17 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://maproom.meteorwanda.gov.rw/SOURCES/.NOAA/.NCEP-NCAR/.CDAS-1/.MONTHLY/.Intrinsic/.PressureLevel/.vpot/T/%28days%20since%201960-01-01%29streamgridunitconvert/ngridtable/%5BT+%5Drmsaover/downloadsarcinfo.html'
single quotes are necessary in unix to protect the url from expansion; probably necessary in other cases as well
| 1000 mb |  |
|---|---|
| 925 mb | |
| 850 mb | |
| 700 mb | |
| 600 mb | |
| 500 mb | |
| 400 mb | |
| 300 mb | |
| 250 mb | |
| 200 mb | |
| 150 mb | |
| 100 mb | |
| 70 mb | |
| 50 mb | |
| 30 mb | |
| 20 mb | |
| 10 mb | |
