Poisson fit

Hi Rooters!

I have been trying to fit a data with poisson distribution without luck. The macro with the data is uploaded, and I hope someone can solve this issue.

Thanks!
AZG
Med0_04GeV_4Quartz2000Ev10MCell.root (3.94 KB)
poisson.c (1.76 KB)

.
poisson.cxx (1.96 KB)

Thank you Pepe :smiley: