Looks good, should put it in googledocs in read only mode so I people can conveniently/safely read it.
Looks like Chrome/Dropbox tries to interpret the XLS with out needing MS Excel or OpenOffice etc but it comes up all messed up for me.
If in googledocs wouldn't be a problem.
I did one here looking at the viability of supercaps in an ebike for helping preserve long term battery cycles by minimizing high discharge of lithium pack etc.
https://docs.google.com/spreadsheets/d/1sLe0sqyq33GyAzIIoaE8JWZOhbOO28GxlnNDwWlad3w/edit#gid=0
Most people are dubious of loading an anonymous XLS file in MS Excel as they have been known to contain viruses/trojans that get deep inside peoples computers and rob them blind.