The SRT is Speech Reception Threshold and is the lowest level at which you get 50% of the spondiac (two syllable words) correct. The 70/72% is a 72% word recognition score when presented at 70dB. The right and left are a little different which is very common. The AC PTA is air conduction (with headphones or insert earphones) pure tone average of 500, 1000 and 2000 hertz. The AI is articulation index and represents the number of data points out of 100 that fall within you range of hearing. The data points are weighted with more of them in the critical high frequency area. By the way, WRS is also commonly called PB Max (phonetically balanced words maximum score} or also word discrimination score. There can be big differences in scores with regards to different voices and male or female presenters. If they have not done it yet, they should do speech mapping and hearing in noise tests as well.
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