What are this horizontal lines?

Hi,

I’m doing a the LPC1114 notebook and don’t know what are this horizontal lines crossing the plot, what they mean or how can I get rid of them

Sometimes even the glitch dissapear from the plot:

This time I will answer myself, maybe other had the same doubt and is helpful tor them

In this case this line is produced by a discrepancy between the actual number of traces and the size of the real_time_plot window