Interpreting Emp. Time Tables

[jacobsen@m...]

What do the abbreviations in the "Signs" column mean on employee time 
tables? For example, the one I'm looking at shows these signs for 
Akron, CO: Z.C.B.W.R.K.Y.
Other towns have F or O among their signs.

Also, what do the small "s", "c", "f", "A", and "L" stand for 
next to the times for each train/station?

Last, each station appears to have a decimal number below it. For 
example, McCook has 11.23, Benkelman has 10.46, Wray 8.07, and Yuma 
9.29. What do these numbers mean?

Thanks!
Eric