f(x) = offset + A0 * e ^ -x / tau + A1 * x ^ N1  + A2 * (1 + T0gamma * x) ^ N2

Long-pass Lambda < 600nm :

  	offset		=3.5567 ± 0.186
  	A0		=1880.9 ± 4.26
  	Tau		=0.0038062 ± 0.000275
  	A1		=0.11327 ± 0.0049
  	N1		=-1.5241 ± 0.02278
	A2		=16.261 ± 0.154
	T0gamma		=1.2462 ± 0.0433
  	N2		=-2 ± 0


Short-pass (Lambda < 600 nm):

  	offset		=0.08312 ± 0.0029
  	A0		=0 ± 0
  	Tau		=0 ± 0
  	A1		=0.03849 ± 0.00658
  	N1		=-1.50051 ± 0.00681
	A2		=19.9379 ± 0.14
	T0gamma		=1.25202 ± 0.0516
  	N2		=-2 ± 0