Logstash parse multiple lat lon values

Question

I have the following json file:

{
    "station": "A001",
    "X": 503744.7,
    "Y": 4726339.0,
    "Z": 458.84,
    "LON": -2.954286956913572,
    "LAT": 42.68952475979137,
    "dates": [
        "2015-01-01",
        "2015-01-02",
        "2015-01-03",
        "2015-01-04",
        "2015-01-05",
        "2015-01-06"
    ],
    "values": [
        "56.9",
        "49.7",
        "48.1",
        "37.1",
        "34.4",
        "35.9"
    ]
}{
    "station": "A002",
    "X": 607870.5,
    "Y": 4670754.0,
    "Z": 264.83,
    "LON": -1.69378623727067,
    "LAT": 42.18149989583031,
    "dates": [
        "2015-01-01",
        "2015-01-02",
        "2015-01-03",
        "2015-01-04"
    ],
    "values": [
        "287",
        "231",
        "207",
        "191"
    ]
}{
    "station": "A403",
    "X": 868708.0,
    "Y": 4709148.0,
    "Z": 849.0,
    "LON": 1.483146867002623,
    "LAT": 42.44694604132231,
    "dates": [
        "2015-01-01",
        "2015-01-02",
        "2015-01-03",
        "2015-01-04",
        "2015-01-05",
        "2015-01-06",
        "2015-01-07",
        "2015-01-08",
        "2015-01-09"
    ],
    "values": [
        "2.296",
        "7.033",
        "2.298",
        "2.275",
        "7.207",
        "5.456",
        "4.794",
        "4.24",
        "4.748"
    ]
}

I would like to extract all the lat lon values for each station to be then imported in KIBANA.

I have created the following conf file for logstash:

input {
    file {
        path => "/etc/logstash/json_data.json"
        sincedb_path => "/dev/null"
        start_position => "beginning"
        codec => multiline {
            pattern => "^Not_exists"
            negate => "true"
            what => "previous"
            auto_flush_interval => 1
            multiline_tag => ""
        }
    }
}
filter {
    json {
        source => "message"
        remove_field => [ "message" ]
        remove_field => [ "original" ]
    }
        #mutate {
        #       add_field => { "location" => "%{[A001][LAT]},%{[A001][LON]}" }
        #}
        #mutate { convert => { "location" => "float" }
        #}
         mutate {
            rename => {
                "LON" => "[locations][lon]"
                "LAT" => "[locations][lat]"
    }
         #remove_field => ["LAT", "LON"]
 }
}

output {
        elasticsearch {
            hosts => ["https://myIP:9200"]
            user => "elastic"
            password => "mypaswd"
            ssl_certificate_verification => false
            index => "test_geo_data_json"
            document_type => "json"
        }
        stdout {codec => rubydebug}
   }

What I'm getting is that logstash is reading only one station (the last one) and only its geopoint is created

Could you please tell me what I'm doing wrong?