v.toArrays(input);
        for(let i=0; i<data.length; i++){
          L.marker([data[i][3], data[i][4]]).bindPopup(data[i][1]).addTo(schools);
        }
      }

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    'Imagery Â© <a href="https://www.mapbox.com/">Mapbox</a>',
    mbUrl = 'https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLb