Oh yes! You're right! I turned off that option because I didn't understand why some of my red lines go only halfway up, and others go all the way up, even though both represent 100% packet loss, when viewing the graph in longer time frames. I tried turning off "graph packet loss" in an effort to comprehend this better, but I didn't have time to finish reading all of your wonderful tutorials and knowledge base articles to see if they answered my question. The half-lines I am referring to are like this 12-hour image below (with graph packet loss 30% turned back on).

Sorry for the confusion, and again, I am sooooooooo grateful for your time and help!

Susan