Table 1

Results of the method of transformation of principal components expressed by eigenvalues from maps of flood risk during 1980–2000 in the Pao river basin, Venezuela

PeriodMonthPrincipal componentsPC1PC2PC3PC4PC5PC6
Flood risk for n = 5 years 
 1980–2000 May Eigenvalues 0.34 0.15 0.098 0.076 0.059 0.045 
Accumulated proportion 36.00 51.81 62.00 69.86 76.03 80.68 
 1980–2000 June Eigenvalues 0.25 0.19 0.085 0.077 0.052 0.045 
Accumulated proportion 31.20 55.37 66.07 75.72 82.25 87.97 
 1980–2000 July Eigenvalues 0.24 0.14 0.081 0.060 0.054 0.037 
Accumulated proportion 31.72 49.66 60.05 67.82 74.76 79.61 
 1980–2000 August Eigenvalues 0.24 0.18 0.12 0.096 0.067 0.054 
Accumulated proportion 28.70 50.25 65.22 76.40 84.17 90.47 
 1980–2000 September Eigenvalues 0.26 0.19 0.08 0.07 0.05 0.04 
Accumulated proportion 29.07 50.51 60.10 68.02 74.38 79.34 
 1980–2000 October Eigenvalues 0.32 0.18 0.12 0.06 0.05 0.04 
Accumulated proportion 36.06 56.93 70.02 76.49 81.81 86.51 
Flood risk for n = 50 years 
 1980–2000 May Eigenvalues 0.17 0.09 0.06 0.04 0.027 0.023 
Accumulated proportion 29.84 45.81 56.81 65.02 69.72 73.71 
 1980–2000 June Eigenvalues 0.17 0.075 0.055 0.031 0.027 0.023 
Accumulated proportion 37.98 54.23 66.03 72.80 78.71 83.77 
 1980–2000 July Eigenvalues 0.16 0.092 0.038 0.029 0.027 0.024 
Accumulated proportion 35.20 55.32 63.73 70.05 76.02 81.14 
 1980–2000 August Eigenvalues 0.13 0.086 0.064 0.029 0.022 0.017 
Accumulated proportion 30.22 50.02 64.78 71.54 76.66 80.76 
 1980–2000 September Eigenvalues 0.168 0.107 0.077 0.034 0.027 0.024 
Accumulated proportion 31.14 50.92 65.20 71.64 76.71 81.22 
 1980–2000 October Eigenvalues 0.237 0.128 0.073 0.041 0.033 0.022 
Accumulated proportion 37.84 58.25 69.99 76.56 81.90 85.42 
PeriodMonthPrincipal componentsPC1PC2PC3PC4PC5PC6
Flood risk for n = 5 years 
 1980–2000 May Eigenvalues 0.34 0.15 0.098 0.076 0.059 0.045 
Accumulated proportion 36.00 51.81 62.00 69.86 76.03 80.68 
 1980–2000 June Eigenvalues 0.25 0.19 0.085 0.077 0.052 0.045 
Accumulated proportion 31.20 55.37 66.07 75.72 82.25 87.97 
 1980–2000 July Eigenvalues 0.24 0.14 0.081 0.060 0.054 0.037 
Accumulated proportion 31.72 49.66 60.05 67.82 74.76 79.61 
 1980–2000 August Eigenvalues 0.24 0.18 0.12 0.096 0.067 0.054 
Accumulated proportion 28.70 50.25 65.22 76.40 84.17 90.47 
 1980–2000 September Eigenvalues 0.26 0.19 0.08 0.07 0.05 0.04 
Accumulated proportion 29.07 50.51 60.10 68.02 74.38 79.34 
 1980–2000 October Eigenvalues 0.32 0.18 0.12 0.06 0.05 0.04 
Accumulated proportion 36.06 56.93 70.02 76.49 81.81 86.51 
Flood risk for n = 50 years 
 1980–2000 May Eigenvalues 0.17 0.09 0.06 0.04 0.027 0.023 
Accumulated proportion 29.84 45.81 56.81 65.02 69.72 73.71 
 1980–2000 June Eigenvalues 0.17 0.075 0.055 0.031 0.027 0.023 
Accumulated proportion 37.98 54.23 66.03 72.80 78.71 83.77 
 1980–2000 July Eigenvalues 0.16 0.092 0.038 0.029 0.027 0.024 
Accumulated proportion 35.20 55.32 63.73 70.05 76.02 81.14 
 1980–2000 August Eigenvalues 0.13 0.086 0.064 0.029 0.022 0.017 
Accumulated proportion 30.22 50.02 64.78 71.54 76.66 80.76 
 1980–2000 September Eigenvalues 0.168 0.107 0.077 0.034 0.027 0.024 
Accumulated proportion 31.14 50.92 65.20 71.64 76.71 81.22 
 1980–2000 October Eigenvalues 0.237 0.128 0.073 0.041 0.033 0.022 
Accumulated proportion 37.84 58.25 69.99 76.56 81.90 85.42 
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