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Table 3 Human mobility flow statistics for the four cities under study: Baltimore (Bal), Minneapolis (Min), Austin (Aus) and Chicago (Chi). The numbers in each cell represent the mean (standard deviation) of the daily average across all census tracts in a given city in 2020. OD flows outside the city are flows that either start or end in a census tract that is not part of the city of interest

From: Enhancing short-term crime prediction with human mobility flows and deep learning architectures

 

Bal

Min

Aus

Chi

Number of census tracts

200

116

204

809

Volume of in-city OD flow

4040.1 (1733.9)

4004.3 (1653.7)

8167.2 (3866.3)

5307.3 (2821.6)

Volume of out-of-city OD flow

1413.6 (1149.9)

2055.8 (1749.5)

2102.6 (1651.3)

1198.9 (1646.3)

The number of unique census tracts connected by in-city OD flow

38.7 (14.6)

30.5 (10.7)

66.8 (20.2)

61.0 (28.5)

The number of unique counties connected by out-of-city OD flow

14.5 (11.9)

23.6 (20.8)

29.6 (17.2)

15.1 (20.5)

The number of unique states connected by out-of-city OD flow

5.9 (3.3)

7.0 (4.2)

7.7 (4.0)

6.2 (4.0)