\\ Species Tag:        &   36002 & Name:&  18-O2
\\ Version:            &       2 & & Molecular oxygen,
\\ Date:       &  Mar. 2014       & & double substituted
\\ Contributor:&  Shanshan Yu   & & $^{18}$O isotope
\\             &  Brian Drouin    & & X $^3 \Sigma^-_g$, v = 0
\\ Lines Listed:       &     246 & Q(300.0)=&      245.6074
\\ Freq. (GHz) $<$     &    9999 & Q(225.0)=&      184.1223
\\ Max. J:             &      78 & Q(150.0)=&      122.8567
\\ LOGSTR0=            &   -20.0 & Q(75.00)=&       61.6498
\\ LOGSTR1=            &   -20.0 & Q(37.50)=&       31.0876
\\ Isotope Corr.:      &  -5.391 & Q(18.75)=&       15.8675
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&        8.3676
\\ $\mu_a$ = &  magnetic         & A=&
\\ $\mu_b$ = &                   & B=& 38313.7
\\ $\mu_c$ = &                   & C=&
\headend


The measurements are from
\\ 1. B.J Drouin et al., 2009, J. Quant. Spectrosc. Radiat. Transf. (in press)
\\ 2. Y. Endo and M. Mizushima, 1983, Jpn. J. Appl. Phys. {\bf 22}, L534
\\ 3. W. Steinbach and W. Gordy, 1973, Phys. Rev. {\bf A8}, 1753

and the Hamiltonian is from
S. Yu, C.E. Miller, B.J. Drouin, H.S.P. Mueller, J. Chem. Phys. 136, 2012. 

When the same transition was measured by different groups, all measurements
were included in the fit with their respective experimental accuracies as weights.
Predictions above 3.6 THz should be viewed with caution. Intensities of magnetic dipole
transitions have been calculated using the $^{16}$O$_2$ $g$ values obtained
from magnetic resonance by K. D. Bowers, R. A. Kamper, and C. D. Lustig, 1959,
Proc. Roy. Soc. London {\bf A251}, 565. 

The perpendicular g-factor has been removed from the intensity file in order to eliminate its excessive contribution to intensities at higher $J$ values, catalog version 1 differed significantly from prior catalog versions due to a change in how this parameter is treated in the intensity calculation.