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m2 m2.5 m3 m4 m5 m6 m8 2.5 44.2 44.2           3 44.2 44.2 47.5         4 47.5 49.1 50.7   62.4     5 49.1 50.7 54.1 59.8 67.2     6 51.9 51.5 55.6 63.8 72 100   8   60.6 57.7 67.2 86.8 123   10     67.2 80.2 100 163 334 12       83.6 106 168 347 16         139