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Table 3 Pearson correlation coefficients among weather variables and pollutants

From: Association between hemorrhagic stroke occurrence and meteorological factors and pollutants

  Mean temperature (°C) Atmospheric pressure (hPa) Humidity (%) Insolation (hours) PM10 (μg/m3) NO2 (ppb) O3 (ppb)
Mean temperature (°C) 1 −0.824* 0.419* −0.123* −0.587* −0.589* 0.346*
Atmospheric pressure (hPa)   1 –.0368* 0.087* 0.411* 0.582* −0.502*
Humidity (%)    1 −0.603* −0.312* −0.348* 0.047
Insolation (hours)     1 0.086* 0.122* 0.231*
PM10 (μg/m3)      1 0.686* −0.038
NO2 (ppb)       1 −0.463*
O3 (ppb)        1
  1. PM 10 , Particulate matter less than 10 mm in aerodynamic diameter, NO 2 Nitrogen dioxide, O 3 Ozone
  2. * P < 0.001