X-axis: year of birth since Creation.
Y-axis: personal years.

A running average of the lifespan of the Patriarchs based on the year that they were born in since Creation. Jared's lifespan was repeated twice because his son, Enoch, didn't die.

A tabulated analysis of the Chrono-genealogies in Genesis. Age begat, years remaining, and total are from the Masoretic text which the Old Testament comes from. On the right is the data derived from the Bible of the year born and died of each sucessive patriarch as well as a running average from which the above chart is from.

 A possibility of the timeframe for the births in the lineage of Cain,
based on the average age of begetting of the lineage of Seth. For
clarity, my guess of the year of Cain's birth is 130 minus 117. It is not
meant to be exact, but only to give an idea of the times.

A comparison that Dr Sarfati made in:

http://creationontheweb.com/content/view/1606

Using the Masoretic Text as the point of reference, the
delta(difference) between the Masoretic Text and the LXX(Septuagint)
and Sam.(Samaritan Pentateuch) is calculated along with the sum of the
deltas.

This shows the age at death of each Patriarch in the LXX (Septuagint),
Masoretic Text(Mas), and the Samaritan Pentateuch. Numbers matching the
Masoretic Text are in bold italics, while the numbers disagreeing are
underlined.