Beta-RAY SPECTROSCOPY, physics homework help

(( Beta-RAY SPECTROSCOPY)) ca you please read the report and edit and graph the data

and correct the number for calculation because it is wrong please I have to correct all thing the teacher write about at

I upload the note of my doctor and file for the lap and the data

data

Cs 137

https://1drv.ms/u/s!Ao22zA4sL1ubhWVFeBoRVMfH17vx

https://1drv.ms/u/s!Ao22zA4sL1ubhWc1v7Ckb6SYZM-f

sr90

if you need any thing tell me

Regards