imax 1
jmax 3
kmax 1

---------------------------------
bin b1 
observation 15 
---------------------------------
bin     b1    b1    b1    b1    
process     sig    bkg1    bkg2    bkg3    
process     0     1     2     3     
rate     5     11     1     2     
---------------------------------
lumi lnN - 1.01 1.01 1.01
