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. 2020 Apr 20;729:138474. doi: 10.1016/j.scitotenv.2020.138474

Table 5.

Descriptive statistics of Italian provincial capitals according to density per km2 (2 categories).

Days exceeding limits set for PM10 or ozone
2018
Infected 17th March
2020
Infected
7th April
2020
Density inhabitants/km2
2019
Temp °C
Feb–Mar
2020
Moisture %
Feb–Mar
2020
Wind km/h
Feb–Mar
2020
Rain days
Feb–Mar
2020
Fog days
Feb–Mar
2020
Cities with ≤ 1000 inhabitant/km2N = 30
 Mean 64.37 248.37 1144.20 510.77 10.01 69.61 9.28 4.08 3.75
 Std. Deviation 39.25 386.95 1065.99 282.11 1.95 10.30 4.41 2.37 3.40
Cities with > 1000 inhabitant/km2N = 25
 Mean 91.24 665.08 2967.44 2584.40 8.63 69.19 7.99 5.80 4.26
 Std. Deviation 40.24 919.70 3092.46 2000.63 2.40 3.59 2.79 2.17 3.03