| B21&B31_last 30 days | Band20
   | RGB(20-31-32) | RGB(29-31-32) | 
| 2024-04-28+18h (GMT):   dT(B20-B31)= 17.51;   IQN = 954 | 
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| 2024-04-28+14h (GMT):   dT(B20-B31)= 20.28;   IQN = 837 | 
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| 2024-04-27+19h (GMT):   dT(B20-B31)= 7.72;   IQN = 573 | 
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| 2024-04-27+15h (GMT):   dT(B20-B31)= 16.62;   IQN = 715 | 
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| 2024-04-26+18h (GMT):   dT(B20-B31)= 16.46;   IQN = 517 | 
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| 2024-04-26+14h (GMT):   dT(B20-B31)= 2.73;   IQN = 367 | 
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| 2024-04-25+19h (GMT):   dT(B20-B31)= 11.41;   IQN = 1007 | 
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| 2023-10-16+18h (GMT):   dT(B20-B31)= 1.8;   IQN = 746 | 
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| 2023-10-16+14h (GMT):   dT(B20-B31)= 3.28;   IQN = 50 | 
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| 2023-10-15+18h (GMT):   dT(B20-B31)= 4.64;   IQN = 762 | 
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| 2023-10-14+18h (GMT):   dT(B20-B31)= 11.56;   IQN = 345 | 
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| 2023-10-14+14h (GMT):   dT(B20-B31)= 2.57;   IQN = 388 | 
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| 2023-10-13+14h (GMT):   dT(B20-B31)= 2.47;   IQN = 700 | 
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| 2023-10-12+18h (GMT):   dT(B20-B31)= 3.17;   IQN = 54 | 
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| 2023-10-12+15h (GMT):   dT(B20-B31)= 15.79;   IQN = 844 | 
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| 2023-10-11+17h (GMT):   dT(B20-B31)= 2.96;   IQN = xx1056 | 
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| 2023-10-11+14h (GMT):   dT(B20-B31)= 2.46;   IQN = 245 | 
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| 2023-10-10+18h (GMT):   dT(B20-B31)= 0.68;   IQN = 453 | 
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| 2023-10-09+18h (GMT):   dT(B20-B31)= 1.15;   IQN = 658 | 
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| 2023-10-09+14h (GMT):   dT(B20-B31)= 2.12;   IQN = 193 | 
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| 2023-10-08+19h (GMT):   dT(B20-B31)= 1.28;   IQN = 852 | 
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| 2023-10-08+14h (GMT):   dT(B20-B31)= 1.01;   IQN = 896 | 
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| 2023-10-07+18h (GMT):   dT(B20-B31)= 1.22;   IQN = 260 | 
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| 2023-10-07+15h (GMT):   dT(B20-B31)= 1.94;   IQN = 630 | 
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| 2023-10-06+14h (GMT):   dT(B20-B31)= 2.69;   IQN = 458 | 
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| 2023-10-05+18h (GMT):   dT(B20-B31)= 0.41;   IQN = 135 | 
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| 2023-10-05+15h (GMT):   dT(B20-B31)= 2.04;   IQN = xx1086 | 
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| 2023-10-04+17h (GMT):   dT(B20-B31)= 1.23;   IQN = 977 | 
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| 2023-10-04+14h (GMT):   dT(B20-B31)= 1.73;   IQN = 4 | 
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| 2023-10-03+18h (GMT):   dT(B20-B31)= 1.25;   IQN = 530 | 
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