Explanation of Lexis Map for
Raw Population Counts
The charts below display the format for the original raw population counts. Each
vertical line indicates that data are available for the year shown on
the X-axis. Age is displayed along the Y-axis; hash marks indicate
the age groupings for which data are available. For example, a hash
mark at age 5 and another one at age 10 shows that population counts
for that year are given for the 5 year age group 5-9. An arrow
denotes an open age interval beginning at the indicated age. An
upside down T indicates a closed age interval (e.g., population
count for the maximum age attained).
To view small version of the charts