等级 | 描述 | 数目 |
R0 | (μA = 0) AND (H = 0) | 546 |
R1 | (0 < μA ≤ 5) AND (H = 0) | 153 |
R2 | ((5 < μA < 15) OR (0 < H < 5)) AND (NV = 0) | 247 |
R3 | (μA ≥ 15) OR (H ≥ 5) OR (NV = 1) | 254 |