m the picture inserted at this point in
the series, that some important chronological event is indicated. Here
also in the written characters over this picture is the symbol for 20.
The last number given in the above addition may therefore, in order to
correspond with the method of the codex, be written as follows:

Twenty year periods. Years. Months. Days.
1 0 3 4

Continuing the addition in this way the result is as follows:

Twenty year periods. Years. Months. Days.
1 0 3 4
8 17
-- -- -- --
1 0 12 1 Third column on Plate 53_b_.
8 17
-- -- -- --
1 1 2 18 Fourth column on Plate 53_b_.
8 17
-- -- -- --
1 1 11 15 Fifth column on Plate 53_b_.
8 17
-- -- -- --
1 2 2 12 First column on Plate 54_b_.
8 17
-- -- -- --
1 2 11 9 Second column on Plate 54_b_.
8 17
-- -- -- --
1 3 2 6 Third column on Plate 54_b_.
7 8
-- -- -- --
1 3 9 14 Fourth column on Plate 54_b_.
8 17
-- -- -- --
1 4 0 11 Fifth column on Plate 54_b_.
8 17
-- -- -- --
1 4 0 8 First column on Plate 55_b_.
8 18[321-1]
-- -- -- --
1 5 0 6 Second column on Plate 55_b_.
8 17
-- -- -- --
1 5 9 3 Third column on Plate 55_b_.
8 17
-- -- -- --
1 6 0