Neither the start nor the end of row b1 are intact. Barthel has this picture:

Fischer has these glyphs:

Sb1-101	Sb1-102	Sb1-103	Sb1-104	Sb1-105	Sb1-106	Sb1-107	Sb1-108	Sb1-109
								...
Sb1-110	Sb1-111	Sb1-112	Sb1-113	Sb1-114	Sb1-115	Sb1-116	Sb1-117

However, I believe that there is no way of knowing how many glyphs are missing after Sb1-117 as this tablet had been reshaped into a form suitable for canoebuilding.