The rental property depreciation calculation seems incorrect?

The TurboTax's depreciation result is different from what I calculated last year using another calculator.

 

my house cost is $280,023

I brought it in 2014 and start to rent it in 2019.

Use the other real estate calculator:

Recovery Period 27.5 years (shown in Form 4562 line 19h)

2019 depreciation is $9,758.38

2020 depreciation is $10,182.65

 

But when I use TurboTax this year, there are two problems:

the Recovery Period becomes 30 years, not 27.5 years;

and the 2020 depreciation is $9,306, not $10,182

why they are different?

 

I hope someone can answer me, thanks!