Logic tells us that when a large sample of birth times are sampled, we should get an even distribution of minutes but of course that is not the case with the hours of birth - because they can easily be
affected by several things.
I've now placed two jpegs on my web site which show the difference
between the recorded birth times in 1920's in Europe and then in
1990's.
You will see why we should have a lot more confidence in recent birth times than earlier ones, and also why it has been necesary all along to rectify charts (or at least attempt to verify them by checking transits).
We can see by the graphs that with births recorded at 5 minute
intervals, that they cannot be exactly right because it is
impossible to get that sort of uneven distribution, but those times,
if recorded carefully, should work quite well for astrology.
This new information will make researchers more aware of the likley
error involved when handling large batches of birth data. It will also
serve to remind astrologers that we should all try and verify or
rectify charts from earlier decades because a high proportion of them
cannot be correct.
http://users.chariot.net.au/~astrocom/birthtimescompared.html
Currently the web page is loading slowly because the jpegs are of
higher quality.
The data used for this project is not available for distribution and
was anonyomised by the supplier to prevent any personal details being
revealed to anyone.
Ray