Asia Mahdi Naser Alzubaidi

I Solve it by creating points for these data . by setting an index to each value (i,date)

You mean, the index works as a label?

Ashwan Abdulmunem

yeh, and it give me some result but i'm not satisfied

Dear Hiba,

Try this algorithm, would be helpful

Otsu thresholding

Léo Soheily Khah

Thank you Sir.