Table A.3.

Robustness to Lag.

Lag	$\alpha$
0	0.0055
1	0.0086
2	0.00927
3	0.00984
4	0.0121
5	0.0164
6	0.028
7	0.0284
8	0.0427
9	0.0675
10	0.0699
11	0.113
12	0.194

This table shows estimates of $\alpha$ as the reporting lag period is varied. We use $T_0$ as Feb 23, and $T_1$ as March 5 ＋ Lag days. King County is omitted. We include Italy, Spain, Germany, and the United Kingdom as epicenters as well as China.