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Table 1 Activities, calculation of activities per grid cell, and chosen number of facilities for mandatory activities

From: Measuring and visualising 15-min-areas for fair CO2 budget distribution

Mandatory activity

(Proxy for) Number of facilities per grid cell

Number of facilities that need to be reached in later calculations

Work

Number of leisure, errand and education PoIs since each of them also defines work places. Additionally, the areas of commercial and industrial land use are taken as possible work places

1000

The number is relatively high to guarantee that different types of work places can be reached

Education

Number of kindergarten, school and university PoIs per grid cell

3

Since in a 15 min city setting, the schools and kindergartens may not be chosen by the parents anymore but are assigned according to the area, only a small number of places was taken here

Shopping

Number of shops and marketplace PoI per grid cell

2

Only shopping facilities for basic goods are considered, so only a small number of shops was taken

Leisure

Number of Leisure PoIs per grid cell (see also Table 3)

30

To be able to reach different kind of leisure activities, the number was set to 30

Errands

Number of errands PoIs per grid cell (see also Table 3)

10

To guarantee that different facilities for errands are included, the number was set to 10