I really don't like Excel for graphing for several reasons. The main issue is that it only has uniform uncertainties for all data points and you cannot put different uncertainties for different data points. I also just don't feel the graph looks good quality at all. People I have asked suggest either doing it by hand or doing it on photoshop or illustrator. Both of these take time though. Surely someone has come up with a nice, easy system? I'm going into my last year of highschool, so I'm not really aware of what graphing packages are available. What do the biologists of this forum use?