| B21&B31_last 30 days | Band20
   | RGB(20-31-32) | RGB(29-31-32) | 
| 2024-04-28+14h (GMT):   dT(B20-B31)= 24.87;   IQN = 1037 | 
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| 2024-04-27+19h (GMT):   dT(B20-B31)= 10.52;   IQN = 375 | 
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| 2024-04-27+15h (GMT):   dT(B20-B31)= 30.44;   IQN = 514 | 
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| 2024-04-26+18h (GMT):   dT(B20-B31)= 27.9;   IQN = 714 | 
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| 2024-04-26+14h (GMT):   dT(B20-B31)= 25.3;   IQN = 568 | 
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| 2024-04-25+19h (GMT):   dT(B20-B31)= 12.87;   IQN = 810 | 
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| 2024-04-25+15h (GMT):   dT(B20-B31)= 4.43;   IQN = 966 | 
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| 2023-10-16+18h (GMT):   dT(B20-B31)= 1.72;   IQN = 943 | 
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| 2023-10-16+14h (GMT):   dT(B20-B31)= 0.74;   IQN = 250 | 
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| 2023-10-15+18h (GMT):   dT(B20-B31)= 1.18;   IQN = 564 | 
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| 2023-10-14+18h (GMT):   dT(B20-B31)= 8.66;   IQN = 543 | 
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| 2023-10-14+14h (GMT):   dT(B20-B31)= 2.38;   IQN = 188 | 
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| 2023-10-13+19h (GMT):   dT(B20-B31)= 1.38;   IQN = 965 | 
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| 2023-10-13+14h (GMT):   dT(B20-B31)= 2.97;   IQN = 900 | 
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| 2023-10-12+18h (GMT):   dT(B20-B31)= 1.16;   IQN = 143 | 
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| 2023-10-12+15h (GMT):   dT(B20-B31)= 5.14;   IQN = 644 | 
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| 2023-10-11+14h (GMT):   dT(B20-B31)= 2.1;   IQN = 445 | 
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| 2023-10-10+18h (GMT):   dT(B20-B31)= 1.51;   IQN = 256 | 
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| 2023-10-10+15h (GMT):   dT(B20-B31)= 3.75;   IQN = xx1081 | 
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| 2023-10-09+18h (GMT):   dT(B20-B31)= 2;   IQN = 855 | 
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| 2023-10-09+14h (GMT):   dT(B20-B31)= 3.17;   IQN = 7 | 
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| 2023-10-08+19h (GMT):   dT(B20-B31)= 0.55;   IQN = 654 | 
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| 2023-10-08+14h (GMT):   dT(B20-B31)= 2.33;   IQN = xx1097 | 
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| 2023-10-07+18h (GMT):   dT(B20-B31)= 1.11;   IQN = 457 | 
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| 2023-10-07+15h (GMT):   dT(B20-B31)= 1.65;   IQN = 430 | 
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| 2023-10-06+19h (GMT):   dT(B20-B31)= 1.45;   IQN = xx1053 | 
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| 2023-10-06+14h (GMT):   dT(B20-B31)= 3.45;   IQN = 658 | 
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| 2023-10-05+18h (GMT):   dT(B20-B31)= 1.52;   IQN = 61 | 
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| 2023-10-05+15h (GMT):   dT(B20-B31)= 1.36;   IQN = 886 | 
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| 2023-10-04+14h (GMT):   dT(B20-B31)= 3.12;   IQN = 204 | 
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