Presumably the 4 + 1 absent glyphs have been left out intentionally and what looks like partly obliterated glyphs have not been drawn otherwise. I have arrived at this conclusion after having contemplated what the text possibly means.

The general meaning of the end of line a1 in K can be made out by counting in terms of 7 and by following the order of our week. But we should not begin with Sunday but with Friday, the day of Venus.

To explain why, I must refer the reader to a few extra pages.