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Table 3

Average monthly MAB and RMSE obtained between (i) Original IMERG and IMD and (ii) CART corrected IMERG and IMD for all months during the validation period

MonthsMAB
RMSE
Original (mm/day)After CART Correction (mm/day)Improvement (%)Original (mm/day)After CART Correction (mm/day)Improvement (%)
January 0.46 0.43 5.3 1.04 0.95 8.7 
February 0.69 0.53 22.2 1.45 1.12 22.8 
March 0.78 0.62 19.6 1.58 1.22 22.5 
April 0.98 0.69 29.2 2.02 1.27 37.3 
May 1.05 0.83 20.3 1.91 1.45 24.0 
June 2.06 1.53 25.6 3.82 2.90 24.2 
July 2.90 2.20 24.1 4.76 3.63 23.8 
August 2.55 1.93 24.3 4.02 3.11 22.7 
September 1.98 1.44 26.9 3.17 2.26 28.8 
October 1.00 0.85 14.4 1.70 1.33 22.0 
November 0.63 0.54 13.8 1.48 1.13 23.8 
December 0.35 0.37 − 6.3 0.83 0.68 17.1 
MonthsMAB
RMSE
Original (mm/day)After CART Correction (mm/day)Improvement (%)Original (mm/day)After CART Correction (mm/day)Improvement (%)
January 0.46 0.43 5.3 1.04 0.95 8.7 
February 0.69 0.53 22.2 1.45 1.12 22.8 
March 0.78 0.62 19.6 1.58 1.22 22.5 
April 0.98 0.69 29.2 2.02 1.27 37.3 
May 1.05 0.83 20.3 1.91 1.45 24.0 
June 2.06 1.53 25.6 3.82 2.90 24.2 
July 2.90 2.20 24.1 4.76 3.63 23.8 
August 2.55 1.93 24.3 4.02 3.11 22.7 
September 1.98 1.44 26.9 3.17 2.26 28.8 
October 1.00 0.85 14.4 1.70 1.33 22.0 
November 0.63 0.54 13.8 1.48 1.13 23.8 
December 0.35 0.37 − 6.3 0.83 0.68 17.1 
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