# Table 2 Correlation between the climatic conditions and the amount of Legionella DNAa

Â

Air temperature

(mean, Â°C)

Relative humidity

(mean, %)

Total precipitation

(mm)

Wind speed

(mean, m/s)

Â

r

P

r

P

r

P

r

P

Daily value (Nâ€‰=â€‰114):

Â Â on the sampling day (lag day 0)

âˆ’0.10

0.22

0.13

0.11

0.17

0.04c

âˆ’0.10

0.22

Â Â one day before the sampling day (lag day 1)

0.01

0.90

âˆ’0.19

0.02c

âˆ’0.29b

<â€‰0.01c

0.16

0.049c

Â Â two days before the sampling day (lag day 2)

âˆ’0.07

0.39

âˆ’0.15

0.06

0.12

0.16

0.08

0.34

Â Â three days before the sampling day (lag day 3)

âˆ’0.10

0.24

âˆ’0.01

0.90

âˆ’0.11

0.17

âˆ’0.15

0.06

Â Â four days before the sampling day (lag day 4)

âˆ’0.06

0.48

0.03

0.74

0.02

0.85

âˆ’0.19

0.02c

Â Â five days before the sampling day (lag day 5)

âˆ’0.09

0.29

âˆ’0.05

0.53

âˆ’0.06

0.45

âˆ’0.08

0.35

Â Â six days before the sampling day (lag day 6)

âˆ’0.11

0.17

0.04

0.65

âˆ’0.09

0.28

0.07

0.39

Â Â seven days before the sampling day (lag day 7)

âˆ’0.13

0.12

0.14

0.09

0.21b

0.01c

âˆ’0.07

0.37

Â Â Monthly value (Nâ€‰=â€‰17)

âˆ’0.08

0.35

0.08

0.34

0.56b

<â€‰0.01c

âˆ’0.04

0.63

1. aGeometric mean (log10 copies/m3) of Legionella-specific 16S rRNA genes in the Legionella DNA-positive samples.
2. bAn absolute Pearsonâ€™s r valueâ€‰â‰¥â€‰0.20 was considered to be correlated.
3. cP < 0.05 was considered significant.