[ 
  [39.145482,-106.944067,40.252957,-104.095186], // Denver 
  [35.92,-115.657,36.479,-114.940], // Las Vegas 
  [25.382212,-80.680834,26.103094,-79.991437], // Miami 
  [40.33,-74.8,41.32,-72.869243], // New York 
  [36.880860,-123.1,38.1,-121.56] // San Francisco 
]