Bresser 7007420 Instruction Manual page 12

NOTICE! The assumption of the flu risk when the listed con-
stellations are reached is purely theoretical. A flu infection
can also occur under other conditions. The flu index is
therefore only to be understood as an additional warning!
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9
8
7
6
5
4
3
2
1
0
20% to 78%
20% to 83%
20% to 89%
20% to 95%
20% to 99%
20% to 99%
20% to 99%
20% to 99%
20% to 99%
20% to 99%