#Function coefficients to compute stratospheric age spectra corresponding to 
#equations 4 (case: single peak) and 5 (case: bimodal) from Andrews et al., 
#JGR, 106, D10, 10257-10274, May 27, 2001.
#Note that the N coefficients must be computed to normalize so that each peak
#has unit area.  
#
#Row names in quotes correspond to the 1997 N2O value that was used as a pseudo 
#vertical coordinate in that paper.  Coefs for bimodal fits to age spectra from
#a 2D stratospheric model are also provided.  See Jones et al., JGR D10, 
#pg 10243-10256, May 27, 2001.