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0             1.5151    1.7323      1.5583    0.92972     0.47214
0             0              1.3433    1.3868       1.02        0.65397
0             0               0              0.7261    0.8505      0.73462
0             0               0              0.3687     0.48778   0.65311
0              0              0               0              0.3067     0.4287
0              0               0               0               0              0
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CODE:
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CODE:
mean(a(a~=0))

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