When Ure Honu lowered the house again, it must be another movement by (for instance) 68º,  parallel with how sun would be sinking down in the second half of summer. 68 + 68 = 136 = 180 - 44. If this guess is correct, we can expect high summer to have a duration of 44 days.

Given that the last glyph of summer is number 180, there should be 44 - 26 = 18 glyphs more 'high summer glyphs' beyond Ga7-10. But, we have recently guessed the part of the text involving summer to be not 180 but 206 glyphs:

	66		25		55		55
Ga4-3		Ga6-13		Ga7-10		Gb1-6		Gb3-1
68 ↑			26		112
206

206 - 180 = 26, a fact which - we can guess - indicates that the glyphs Ga6-14 -- Ga7-10 are describing something else than the dimension of the summer hemisphere.