how to fit to get a result like yours?

[huzhongyin]

Hello:
I wanted to fit the regression the radio and distance datas，I used curve_fit to regress, but I got a result that it was not same as your result what calculated by the website。corve_fit got a result what's R2 is bigger than the website,but I still want to use website's result, because it's header and tail is more similar to fact.So,do you know how to get the website's result by python? Best wishes to you,thank you !!!!