[pheon]

i think your analysis is slightly flawed - you have no anchor / point of reference.

maybe a better question would be, for ever hour worked, how many ticks are issued. aka normalizing against the number of patrol men/women active for a day or an hour.

e.g. more police on patrol == more tickets, but does not mean each police man/woman is biased to issue more tickets near the end of the month to meet their quota.

also consider counting backwards. e.g end of the month = 0, 1 day before end of month = 1, 2 days before end of month = 2 etc..

my 2cents.