Proposal  based on the discussions during the meeting (18/10/2018)

• NO₂ passive samplers (chosen by participants themselves)
• Four week period at least
• Two passive NO₂ samplers at one location
• Measurement campaign should be organised in ideally in spring or if not possible in early autumn
• Placement: busy street/street canyon in front of school and schoolyard or similar place relatively far away from street (and road traffic)
• Minimum number of schools is one per city
• Meta data: info on location of schools, kind of school (age of pupils)
• Concept of communication between school (teachers, parent representatives) and citizens (pupils, parents)