\\ Species Tag:        &   17001 & Name:&  OH            
\\ Version:            &       4 & & Hydroxyl radical
\\ Date:       &  Dec.~2000      & & X $^2 \Pi$ states
\\ Contributor:&  H. M. Pickett  & & 
\\             &                 & &
\\ Lines Listed:       &    1160 & Q(300.0)=&       81.494
\\ Freq. (GHz) $<$     &    4000 & Q(225.0)=&       60.296
\\ Max. J:             &      50 & Q(150.0)=&       40.144
\\ LOGSTR0=            &   -30.0 & Q(75.00)=&       22.754
\\ LOGSTR1=            &   -35.0 & Q(37.50)=&       17.034
\\ Isotope Corr.:      &     0.0 & Q(18.75)=&       16.004
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&       15.929
\\ $\mu_a$ = & 1.65520           & A=&
\\ $\mu_b$ = &                   & B=& 556174.
\\ $\mu_c$ = &                   & C=&
\headend

	The microwave data have been reported in R. A. Beaudet and R. L. Poynter,
1978, J. Phys. Chem. Ref. Data {\bf 7}, 311. Far-infrared data are from: G. A.
Blake, J. Farhoomand, and H. M. Pickett, 1986, J. Mol. Spect. {\bf 115}, 226.
J. Farhoomand, G. A. Blake, and H. M. Pickett, 1985, Astrophys.~J. {\bf 291},
L19. J. M. Brown {\it et al.}, 1986, Astrophys.~J. {\bf 307}, 410.
	
	The mid-infrared lines of B. Lemoine, M. Bogey, and J. L. Destombes, 1985,
Chem. Phys. Lett. {\bf 117}, 532, were also used in the fit.  The calculation
involved fitting the spectra to effective parameters for the two $^2\Pi$ states
using a Hund's case (b) basis, but the quanta have been converted to Hund's case (a).

        The dipole moment is from K. I. Peterson, G. T. Fraser, and W. A. Klemperer, 1984,
Can.\ J. Phys.\ {\bf 62}, 1502.