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. 2021 May 10;11:9849. doi: 10.1038/s41598-021-89213-4

Table 1.

Mean values (standard error) of the variables recorded between February 23 to August 16, 2020 in relation to climates.

Desert (n = 650) Semiarid (n = 350) Mediterranean (n = 5925) Marine South West (n = 1225) Tundra (n = 500)
Altitude (m a.s.l.) 1298 (1300.2) 439 (336) 285.2 (247.7) 88.0 (92.5) 139.2 (152.5)
Population size (n° inhabitants) 60,309.2 (104,458.6) 57,790.3 (85,457.7) 64,774.9 (94,591.6) 29,500.1 (48,398.9) 14,203 (32,593.9)
Pop. density (inhabitants km−2) 17.62 (45.21) 29.55 (52.94) 1482.2 (3779.1) 29.0 (41.1) 1.1 (2.4)
Maximum temperature (°C) 20.2 (4.4) 19.6 (4.7) 18.0 (6.0) 14.2 (4.6) 8.9 (5.8)
Minimum temperature (°C) 7.0 (8.3) 8.9 (4.2) 6.2 (3.4) 5.7 (2.7) 2.0 (4.4)
Mean temperature (°C) 13.6 (5.4) 14.3 (4.0) 12.1 (4.3) 9.9 (3.3) 5.5 (4.9)
Relative humidity (%) 53.2 (24.07) 56.0 (20.7) 71.9 (11.8) 81.9 (6.9) 77.6 (9.4)
Accumulated precipitation (mm) 0.4 (1.6) 0.3 (1.1) 2.6 (4.1) 8.5 (12.8) 2.4 (4.3)
Atmospheric pressure (mbar) 857.4 (150.1) 890.5 (127.3) 987.7 (40.6) 1001 (21.8) 994.5 (21.7)
Solar radiation (Mj m−2) 17.75 (4.8) 14.1 (4.9) 10.8 (5.9) 7.9 (4.9) 5.6 (3.7)
Wind speed (km h−1) 5.95 (3.55) 6.7 (4.0) 4.8 (3.1) 5.5 (3.5) 10.2 (8.1)
MP2.5 (µg m−3) 10.6 (3.9) 11.6 (2.9) 27.6 (17.5) 42.8 (25.8) 19.8 (17.9)
MP10 (µg m−3) 36.41 (12.3) 34.3 (11.1) 50.3 (23.2) 49.3 (26.2) N.D.
Mean relative infection rate 122.4 (273.5) 37.8 (63.6) 53.9 (85.5) 13.6 (28.9) 9.0 (35.7)

N.D. no data.