/begin_header
/missing=-999
/delimiter=space
!
! Rayleigh optical thickness (tau_r) computed from Equation 7 of Gordon et al. 
!	
!	Gordon, H.R., J.W. Brown and R.H. Evans, 1998, "Exact Rayleigh 
!		Scattering calculations for use with the Nimbus 7 Coastal 
!		Zone Color Scanner", Applied Optics, 27, 862-871
!
! tau_r = 0.008569 * um^(-4) * (1.0 + (0.0113 * um^(-2)) + (0.00013 * um^(-4))) 
!   where um = wavelength in micrometers
!
/fields=wavelength,tau_r
/units=nm,dimensionless
/end_header
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