Calculate how often Google Location data is recorded/sent to Google using Location History.json from Google Takeout

location-calc.js

// use nodejs to load location history.json from your google takeout folder -b
var data=require('./Location History')
var times=data.locations.map(d=>parseInt(d.timestampMs))
var between=times.map((t,i) => times[i-1] ? t-times[i-1] : 0 )
var mean=between.reduce((a,v)=>a+v)/between.length
var meanInMinutes=mean/1000/60
console.log("Google location data reported every " + meanInMinutes + " minutes.")