{"method":"F(S): expected 2025 cardiac-arrest calls a year inside the two-minute walk of at least one chosen school, at hours when no AED in reach was open. Calls are spread evenly over each ZIP's 50 m squares; a square reached by two chosen schools counts once.","schoolsConsidered":1843,"before":363,"methods":[{"cabinets":10,"afterHours":13.3,"afterHoursCredited":13,"greedy":13.3,"busiestWalk":10.5,"fewestAeds":2,"random":2.7},{"cabinets":25,"afterHours":28.6,"afterHoursCredited":28.1,"greedy":29,"busiestWalk":26.4,"fewestAeds":7.1,"random":6.7},{"cabinets":50,"afterHours":50.6,"afterHoursCredited":49.6,"greedy":51.5,"busiestWalk":46.7,"fewestAeds":15,"random":13.2},{"cabinets":100,"afterHours":85.8,"afterHoursCredited":84.3,"greedy":88,"busiestWalk":74.3,"fewestAeds":27.1,"random":26.2}],"sensitivity":[{"key":"base","label":"As published: schools lock at 6 PM, unknown hours count as shut","before":363,"gainTop100":85.8,"gainPct":24,"top25Kept":25,"top100Kept":100,"sameFirst":true},{"key":"close15","label":"Schools lock at 3 PM","before":302,"gainTop100":98.9,"gainPct":33,"top25Kept":22,"top100Kept":92,"sameFirst":true},{"key":"close21","label":"Schools stay open until 9 PM","before":417,"gainTop100":74.6,"gainPct":18,"top25Kept":21,"top100Kept":93,"sameFirst":true},{"key":"unknownOpen","label":"Every venue of unknown hours open around the clock","before":713,"gainTop100":79.5,"gainPct":11,"top25Kept":20,"top100Kept":88,"sameFirst":true},{"key":"ai","label":"Bedrock's estimated hours counted","before":516,"gainTop100":84.7,"gainPct":16,"top25Kept":22,"top100Kept":98,"sameFirst":true}]}