\\ Species Tag: & 50003 & Name:& O3-sym-O-18 \\ Version: & 2 & & Ozone, \\ & & & ground state, \\ Date: & Mar. 1984 & & symmetric $^{18}$O isotope \\ Contributor:& H. M. Pickett & & \\ & R. L. Poynter & & \\ Lines Listed: & 3184 & Q(300.0)=& 3525.332 \\ Freq. (GHz) $<$ & 6529 & Q(225.0)=& 2290.340 \\ Max. J: & 50 & Q(150.0)=& 1247.096 \\ LOGSTR0= & -9.0 & Q(75.00)=& 441.875 \\ LOGSTR1= & -9.0 & Q(37.50)=& 156.567 \\ Isotope Corr.: & -2.690 & Q(18.75)=& 55.616 \\ Egy. (cm$^{-1}$) $>$& 0.0 & Q(9.375)=& 19.861 \\ $\mu_a$ = & & A=& 98646.687 \\ $\mu_b$ = & 0.5324 & B=& 13352.732 \\ $\mu_c$ = & & C=& 11731.767 \headend The catalog of symmetric $^{18}$O ozone is based on the work of J. Depannemaecker and J. Bellet, 1977, J. Mol. Spect. {\bf 66}, 106. The $^{16}$O$_3$ dipole moment was assumed. This catalog version extends the line calculation in frequency and J.