This topic has been discussed here a lot. The great thing about the astronomical observations on the tablet is that they dont have to be perfect to be accurate.
Conjuctions of planets in approximate relative positions to each other and to constellations are enough to establish a year. Simliar conjuctions may be hundreds or thousands of years apart. Anyone, or organisation like the wt, that emphasises eclipses, in relation to this topic, is purposely ignoring the superior evidence of planetary conjunctions.
Ive read apologists arguing over the position of a planet to a degree or 2 and missing the entire point. The observer is describing celestial positions by holding out his arm and counting finger-breadths, its never going to be 100% accurate- but it doesnt need to be.