# Created by DD on 1/17/04
# The Two-Level ("Fluffy") concept/model is described on:
# http://space.mit.edu/HETG/technotes/contam/twolevel.html
# The ISIS routine available there is run to create an
# output list of the Fluffium transmission vs wavelength a
# time period:
#
# isis> .load contam_twolevel.040117.i
#
# The values below are from that output and give the
# Fluffium transmission (of 15% thick model) at t = 2002.97.
# (NOT tau)
#
# Note that two long-wavelength points were added by hand:
# 44.08 to 49.99 is factor of 0.9181/0.9351 = 0.9818,
#   so value at 49.99+(49.99-44.08) = 55.9
#       should be 0.9818 * 0.9181 = 0.9014 :
# likewise:
#           49.99+2.0*(49.99-44.08) = 61.81
#         and (0.9818)^2 * 0.9181 = 0.8850
#
# 44.08   0.9351  
#  ...
# 49.99   0.9181  
# 55.90   0.9014
# 61.81   0.8850
#
#
#    wavelength      Fluffium_TRANSMISSION
  1.01   1.0000  
  2.21   1.0000  
  3.40   1.0000  
  4.60   0.9983  
  5.80   0.9918  
  6.99   0.9835  
  8.19   0.9742  
  9.39   0.9637  
 10.58   0.9523  
 11.78   0.9407  
 12.97   0.9296  
 14.17   0.9189  
 15.37   0.9085  
 16.56   0.8994  
 17.76   0.8935  
 18.96   0.8883  
 20.15   0.8836  
 21.35   0.8802  
 22.55   0.8784  
 23.74   0.8766  
 24.94   0.8751  
 26.13   0.8746  
 27.33   0.8750  
 28.53   0.8761  
 29.72   0.8777  
 30.92   0.8796  
 32.12   0.8818  
 33.31   0.8839  
 34.51   0.8859  
 35.70   0.8881  
 36.90   0.8909  
 38.10   0.8948  
 39.29   0.9007  
 40.49   0.9091  
 41.69   0.9204  
 42.88   0.9333  
 44.08   0.9351  
 45.27   0.9313  
 46.47   0.9277  
 47.67   0.9242  
 48.86   0.9210  
 49.99   0.9181  
 55.90   0.9014
 61.81   0.8850