const numArr = [
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            "district": "桃園區",
            "peopleNum": "8828",
            "locationNum": [25.00603,121.30200],
            "center": {
              "lat": 24.99997,
              "lng": 121.30371
            }
          },
        
        {
            "district": "中壢區",
            "peopleNum": "9970",
            "locationNum": [24.98245,121.20560],
            "center": {
              "lat": 24.98238,
              "lng": 121.21228
            }
          },
        
        {
            "district": "大溪區",
            "peopleNum": "6940",
            "locationNum": [24.87565,121.29745],
            "center": {
              "lat": 24.87315,
              "lng": 121.29790
            }
          },
        
        {
            "district": "楊梅區",
            "peopleNum": "5073",
            "locationNum": [24.93450,121.13792],
            "center": {
              "lat": 24.91983,
              "lng": 121.12965
            }
          },
        
        {
            "district": "蘆竹區",
            "peopleNum": "5082",
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            "center": {
              "lat": 25.06071,
              "lng": 121.28300
            }
          },
        
        {
            "district": "大園區",
            "peopleNum": "3402",
            "locationNum": [25.05773,121.19304],
            "center": {
              "lat": 25.05898,
              "lng": 121.21141
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          },
        
        {
            "district": "龜山區",
            "peopleNum": "7682",
            "locationNum": [25.02907,121.36489],
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              "lat": 25.02114,
              "lng": 121.36008
            }
          },
        
        {
            "district": "八德區",
            "peopleNum": "8292",
            "locationNum": [24.95627,121.29084],
            "center": {
              "lat": 24.94896,
              "lng": 121.29634
            }
          },
        
        {
            "district": "龍潭區",
            "peopleNum": "4646",
            "locationNum": [24.85339,121.20442],
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              "lat": 24.84996,
              "lng": 121.21455
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          },
        
        {
            "district": "平鎮區",
            "peopleNum": "7283",
            "locationNum": [24.94013,121.20460],
            "center": {
              "lat": 24.92005,
              "lng": 121.22023
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          },
        
        {
            "district": "新屋區",
            "peopleNum": "893",
            "locationNum": [24.99137,121.06693],
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              "lat": 24.97440,
              "lng": 121.07860
            }
          },
        
        {
            "district": "觀音區",
            "peopleNum": "2583",
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              "lat": 25.02471,
              "lng": 121.11987
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          },
        
        {
            "district": "復興區",
            "peopleNum": "9330",
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              "lat": 24.73043,
              "lng": 121.37448
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        ]