Stem and leaf plot

http://www.mathsisfun.com/definitions/stem-and-leaf-plot.html

"A stem and leaf plot is where each data value is split into a "leaf" (usually the last digit) and a "stem" (the other digits). The "stem" values are listed down, and the "leaf" values go right (or left) from the stem values."

This is an example of what one would look like.