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

From: Detection of Legionella species, the influence of precipitation on the amount of Legionella DNA, and bacterial microbiome in aerosols from outdoor sites near asphalt roads in Toyama Prefecture, Japan

  Air temperature
(mean, °C)
Relative humidity
(mean, %)
Total precipitation
(mm)
Wind speed
(mean, m/s)
  r P r P r P r P
Daily value (N = 114):
  on the sampling day (lag day 0) −0.10 0.22 0.13 0.11 0.17 0.04c −0.10 0.22
  one day before the sampling day (lag day 1) 0.01 0.90 −0.19 0.02c −0.29b < 0.01c 0.16 0.049c
  two days before the sampling day (lag day 2) −0.07 0.39 −0.15 0.06 0.12 0.16 0.08 0.34
  three days before the sampling day (lag day 3) −0.10 0.24 −0.01 0.90 −0.11 0.17 −0.15 0.06
  four days before the sampling day (lag day 4) −0.06 0.48 0.03 0.74 0.02 0.85 −0.19 0.02c
  five days before the sampling day (lag day 5) −0.09 0.29 −0.05 0.53 −0.06 0.45 −0.08 0.35
  six days before the sampling day (lag day 6) −0.11 0.17 0.04 0.65 −0.09 0.28 0.07 0.39
  seven days before the sampling day (lag day 7) −0.13 0.12 0.14 0.09 0.21b 0.01c −0.07 0.37
  Monthly value (N = 17) −0.08 0.35 0.08 0.34 0.56b < 0.01c −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 Pearson’s r value ≥ 0.20 was considered to be correlated.
  3. cP < 0.05 was considered significant.