[![enter image description here](https://i.stack.imgur.com/LH8YS.png)](https://i.stack.imgur.com/LH8YS.png)

The figure is the plot of x,y set in a excel file, total 8760 pair of x and y. I want to remove the noise data pair in red circle area and output a new excel file with remain data pair. How could I do it in R?