| B21&B31_last 30 days | Band20
   | RGB(20-31-32) | RGB(29-31-32) | 
| 2024-04-28+18h (GMT):   dT(B20-B31)= 1.75;   IQN = 87 | 
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| 2024-04-28+14h (GMT):   dT(B20-B31)= 4.19;   IQN = xx1124 | 
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| 2024-04-27+17h (GMT):   dT(B20-B31)= 6;   IQN = 1001 | 
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| 2024-04-27+13h (GMT):   dT(B20-B31)= 5.88;   IQN = 44 | 
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| 2024-04-26+18h (GMT):   dT(B20-B31)= 4.91;   IQN = 520 | 
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| 2024-04-25+17h (GMT):   dT(B20-B31)= 8.82;   IQN = 566 | 
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| 2024-04-25+13h (GMT):   dT(B20-B31)= 2.46;   IQN = 495 | 
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| 2023-10-16+17h (GMT):   dT(B20-B31)= 2.09;   IQN = 292 | 
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| 2023-10-16+13h (GMT):   dT(B20-B31)= 5.76;   IQN = 715 | 
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| 2023-10-15+17h (GMT):   dT(B20-B31)= 4.91;   IQN = 811 | 
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| 2023-10-15+14h (GMT):   dT(B20-B31)= 6.36;   IQN = 821 | 
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| 2023-10-14+18h (GMT):   dT(B20-B31)= 4.86;   IQN = 693 | 
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| 2023-10-14+13h (GMT):   dT(B20-B31)= 5.93;   IQN = 267 | 
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| 2023-10-13+17h (GMT):   dT(B20-B31)= 3.84;   IQN = 410 | 
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| 2023-10-12+18h (GMT):   dT(B20-B31)= 6.3;   IQN = xx1093 | 
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| 2023-10-12+13h (GMT):   dT(B20-B31)= 4.27;   IQN = 174 | 
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| 2023-10-11+17h (GMT):   dT(B20-B31)= 13.47;   IQN = 9 | 
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| 2023-10-11+13h (GMT):   dT(B20-B31)= 22.36;   IQN = 911 | 
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| 2023-10-10+17h (GMT):   dT(B20-B31)= 6.84;   IQN = xx1134 | 
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| 2023-10-10+14h (GMT):   dT(B20-B31)= 23.46;   IQN = 606 | 
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| 2023-10-09+18h (GMT):   dT(B20-B31)= 18.84;   IQN = 390 | 
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| 2023-10-09+13h (GMT):   dT(B20-B31)= 6.15;   IQN = 475 | 
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| 2023-10-08+17h (GMT):   dT(B20-B31)= 9.08;   IQN = 735 | 
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| 2023-10-08+14h (GMT):   dT(B20-B31)= 6.62;   IQN = xx1059 | 
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| 2023-10-07+18h (GMT):   dT(B20-B31)= 3.89;   IQN = 790 | 
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| 2023-10-07+13h (GMT):   dT(B20-B31)= 4.7;   IQN = 29 | 
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| 2023-10-06+17h (GMT):   dT(B20-B31)= 3.83;   IQN = 337 | 
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| 2023-10-05+13h (GMT):   dT(B20-B31)= 5.35;   IQN = 414 | 
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| 2023-10-04+17h (GMT):   dT(B20-B31)= 6.2;   IQN = 60 | 
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| 2023-10-04+13h (GMT):   dT(B20-B31)= 18.37;   IQN = 672 | 
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