| Clustering center | Numbers of the samples | Category | Accuracy of identification |
| Neuron 1 | 17, 26, 31, 32, 33, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 54, 56, and 59 | Third | 83.3% | Neuron 2 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, and 20 | First | Neuron 3 | 34, 46, 49, 50, 51, 52, 53, 55, 57, 58, and 60 | Fourth | Neuron 4 | 16, 18, 19, 21, 22, 23, 24, 25, 27, 28, 29, 30, and 33 | Second |
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