From: Routine activity effects of the Covid-19 pandemic on burglary in Detroit, March, 2020
 | Period A | Period B | Period C |
---|---|---|---|
March 1 through March 9 | March 10 through March 23 | March 24 through March 31 | |
a. Total block groups in subset | 657 | 657 | 657 |
b. Total days in period | 9 | 14 | 8 |
c. Total burglaries in subset in period | 93 | 131 | 47 |
d. Burglaries per day in subset   d = c/b | 10.33 | 9.36 | 5.88 |
e. Burglaries per day per 100 block groups in subset   e = (d × 100)/657 | 1.57 | 1.42 | 0.89 |
f. Per cent change from period A | 0 | − 0.10 | − 0.43 |