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. 2021 Mar 24;28(29):39648–39654. doi: 10.1007/s11356-021-13408-5

Table 3.

Pearson’s correlation analysis between PM2.5 and PM10 concentration and number of COVID-19 infections in the city of Arequipa, Peru. Values corresponding to Sundays were removed from this analysis

Days of delay R2 value p value Days of delay R2 value p value
PM2.5 0 0.10 0.2679 PM10 0 0.04 0.6893
1 0.08 0.3558 1 0.04 0.3558
2 0.06 0.4695 2 0.02 0.8427
3 0.07 0.4423 3 0.03 0.7502
4 0.04 0.6216 4 0.01 0.8762
5 0.06 0.4762 5 0.04 0.6645
6 0.08 0.3527 6 0.06 0.5231
7 0.09 0.3343 7 0.06 0.4800
8 0.11 0.2263 8 0.09 0.3329
9 0.11 0.2065 9 0.09 0.2839
10 0.12 0.1731 10 0.13 0.1571
11 0.03 0.6989 11 0.07 0.4345
12 0.11 0.2118 12 0.17 0.0572
13 0.07 0.4505 13 0.13 0.1495
14 0.08 0.3937 14 0.16 0.0685
15 0.09 0.2966 15 0.18 0.0398
16 0.09 0.3468 16 0.19 0.0380
17 0.10 0.2852 17 0.21 0.0205
18 0.07 0.4785 18 0.18 0.0449
19 0.06 0.5172 19 0.17 0.0606
20 0.06 0.5501 20 0.19 0.0435