This is the fourth paper of a series summarising the results of
mm-wavelength flux density monitoring of extragalactic radio sources
with the IRAM 30 m telescope at Pico Veleta, Spain. A first selection
of a sample of point-like radio sources well suited as pointing
sources for the 30 m telescope was made in PaperI (Steppe et al.
1988), resulting in flux density measurements in the 
range of
approximately 300 extragalactic radio sources. In PaperII and III
(Steppe et al. 1992, 1993) monitoring results were published for
sources with flux densities 
1Jy at 87.7GHz (3.4mm) which
are now used as standard pointing sources at the telescope. The
pointing catalogue used at the telescope consists mainly of quasars
and BL Lac objects; a complete list of these sources is given in
Table 1 (see also Wild 1995), which is published electronically.