Table A2:
Timeline of positive and negative tests for COVID-19 in Philadelphia, USA; obtained from figures published by City of Philadelphia on 3/31/2020
| date of test report (t) | test positive (Yt*) | test negative (nt- Yt*) |
|---|---|---|
| 3/10/2020 | 1 | 5 |
| 3/11/2020 | 0 | 13 |
| 3/12/2020 | 1 | 19 |
| 3/13/2020 | 2 | 46 |
| 3/14/2020 | 6 | 47 |
| 3/15/2020 | 1 | 28 |
| 3/16/2020 | 7 | 79 |
| 3/17/2020 | 15 | 157 |
| 3/18/2020 | 8 | 173 |
| 3/19/2020 | 30 | 267 |
| 3/20/2020 | 32 | 175 |
| 3/21/2020 | 50 | 358 |
| 3/22/2020 | 51 | 178 |
| 3/23/2020 | 72 | 387 |
| 3/24/2020 | 104 | 564 |
| 3/25/2020 | 164 | 725 |
| 3/26/2020 | 176 | 626 |
| 3/27/2020 | 192 | 973 |
| 3/28/2020 | 122 | 650 |
| 3/29/2020 | 153 | 614 |
| 3/30/2020 | 101 | 647 |
| 3/31/2020 | 27 | 99 |