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Table 3

Simulation results for the three different fractionation averaging methods for the training and testing data sets

SetAverage methodMeanSTDRMSE
mg VSS/Lmg VSS/Lmg VSS/L>1 STD>2 STD>3 STD
Training (2017/10/18 − 2018/10/17) Size: 365 Actual 1,311.6 170.9     
Yearly 1,419.3 216.5 229.4 38.9% 14.0% 4.4% 
Quarterly 1,411.2 213.7 243.2 45.4% 15.6% 4.9% 
Monthly 1,413.5 361.7 343.5 55.6% 27.4% 10.7% 
Testing (2013/10/18 − 2017/10/17) Size: 1461 Actual 1,165.9 185.9     
Yearly 1,119.7 281.0 256.3 44.0% 16.2% 3.0% 
Quarterly 1,112.8 288.1 185.9 47.8% 17.2% 3.8% 
Monthly 1,106.9 332.5 312.2 56.0% 24.4% 6.0% 
SetAverage methodMeanSTDRMSE
mg VSS/Lmg VSS/Lmg VSS/L>1 STD>2 STD>3 STD
Training (2017/10/18 − 2018/10/17) Size: 365 Actual 1,311.6 170.9     
Yearly 1,419.3 216.5 229.4 38.9% 14.0% 4.4% 
Quarterly 1,411.2 213.7 243.2 45.4% 15.6% 4.9% 
Monthly 1,413.5 361.7 343.5 55.6% 27.4% 10.7% 
Testing (2013/10/18 − 2017/10/17) Size: 1461 Actual 1,165.9 185.9     
Yearly 1,119.7 281.0 256.3 44.0% 16.2% 3.0% 
Quarterly 1,112.8 288.1 185.9 47.8% 17.2% 3.8% 
Monthly 1,106.9 332.5 312.2 56.0% 24.4% 6.0% 
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