Planetary Gearsets

Digging through my old notebooks, looking for sketches of my mechanism for changing time zones on an analog clock, I came across a chart that shows the gear ratios available from a planetary gearset. I put it into a Google spreadsheet here:

http://spreadsheets.google.com/ccc?key=pE93ibhhw1_hytd_VGJiHHg&hl=en