Definitions for "Excel spreadsheet"
Keywords:  exampel, sparse, everyday, matrix
an everyday exampel of sparse matrix)
a good way to compile the data, and it allows to you to easily create graphic representations
a great way to automate all this
a great way to track this information, but even a handwritten schedule will do
a document that can be completed onscreen and printed
Keywords:  easier, lot
a LOT easier