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Table 2 Standard deviations of 10 sub-samples (3 parallel examinations) of a house-dust sample with low load in the 63-μm fraction in cfu/g × 1,000 (DG18, 25°C).

From: Evaluation of errors and limits of the 63-μm house-dust-fraction method, a surrogate to predict hidden moisture damage

Number 1 2 3 4 5 6 7 8 9 10 Mean % TCC SD SD%
Asp. 12 13 8 8 9 9 6 11 7 8 9.1 51 2.2 25
Peni. 6 3 3 2 5 1 2 5 1 7 3.5 20 2.1 61
Clad. 5 0 2 1 5 5 1 0 3 1 2.3 13 2.1 89
Wall. 2 0 0 1 0 2 1 0 0 0 0.6 3 0.8 141
Aureo. pu. 0 0 0 0 0 1 0 0 0 0 0.1 1 0.3 316
Muc. 0 0 1 0 0 0 0 0 0 0 0.1 1 0.3 316
Fusa. 0 0 0 0 0 0 1 0 0 0 0.1 1 0.3 316
Myc. st. 1 3 4 3 1 6 2 0 0 1 2.1 12 1.9 91
TCC 26 19 18 15 20 24 13 16 11 17 17.9 100 4.6 26
  1. SD- Standard deviation, SD% - relative percent standard deviation, % TCC- percent proportion of total colony count