Survivorship curves for Eurasian Magpies based on a cohort life table and on a static life table.

Please help!

I am trying to construct Survivorship curves for Eurasian Magpies based on a cohort life table and on a static life table using the dataset found at:

http://www.mei.org.uk/files/misc/MAGPIPulli.xls

I have wasted a lot of time on this and I am not sure what is going wrong, I can't seem to get my calculations right. Not even the concept as a matter of fact. For example, for the static table, do I use the number of individuals both dead or alive in the year interval that I choose to them? Or either the dead OR alive? I am going crazy over this.