A
6 6 6 6 6 6 6 6 5 6 59
- ... H
6 5   4 5 6 6 6 2 (?) 0 (?) 40 (?)
P
9 7 7 7 7 7 6 6 6 6 68
- - - - - - Q
5 5   5 5           20

59 = Number of nights in a double-month, also explained by 5 in the ninth period where one month of the two is missing a beat, where the moon is 'limping'.

20 = twice ten, base of counting, also explained as 4 * 5

68 = (9 + 7) [i.e. 16]  +  4 * (7 + 6) [i.e. 4 * 13 = 52 = number of weeks (7) in a year]. Notice that 13 is indicated by pairing, connecting the 'flat' 7-glyph in period no. 3 with the 'flat' 6-glyph in period no. 8.

40 (?) is composed, I believe, from 8 terms, divided into two groups: 6 + 5 + 4 + 5 = 20 respectively 6 + 6 + 6 + 2 = 40. This idea of mine is based on my interpretation of the missing glyphs in the H text as misleading. The creator (or redesigner) of the H text seems to have used the area of his wooden tablet in a creative way.

... There are 12 + 12 = 24 rows on this tablet, which has been damaged by fire (see upper left) ...

 

a1 50 50 burnt area could have contained the number of glyphs below 50 b1 *52 52
a2 58 108 108 b2 48 100
a3 52 160 160 b3 47 147
a4 56 216 216 b4 51 198
a5 59 275 275 b5 57 255
a6 64 339 *5 344 b6 54 309
a7 48 387 *3 395 b7 50 359
a8 46 433 *8 449 b8 *54 (?) 413
a9 40 473 *13 502 b9 65 478
a10 49 522 *18 569 b10 67 545
a11 36 558 *22 627 b11 53 598
a12 *21 (?) *579 (*18) 648 (?) b12 *50 (?) 648
sum *648 (?) sum *648 (?)