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        "Fecha": "1997\/01\/01",
        "Pb": "0,02",
        "CO": "0,9",
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        "O3": "43",
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        "fid": "7961",
        "Fecha": "1997\/01\/02",
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        "O3": "48",
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    {
        "fid": "7962",
        "Fecha": "1997\/01\/03",
        "Pb": "0,08",
        "CO": "1",
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        "O3": "54",
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    {
        "fid": "7963",
        "Fecha": "1997\/01\/04",
        "Pb": "0,07",
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        "O3": "51",
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    {
        "fid": "7964",
        "Fecha": "1997\/01\/05",
        "Pb": "0,12",
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        "O3": "31",
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    {
        "fid": "7965",
        "Fecha": "1997\/01\/06",
        "Pb": "0,06",
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        "NO": "6",
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        "NOx": "21",
        "O3": "59",
        "SO2": "5",
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    {
        "fid": "7966",
        "Fecha": "1997\/01\/07",
        "Pb": "0,12",
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    {
        "fid": "7967",
        "Fecha": "1997\/01\/08",
        "Pb": "0,11",
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        "NOx": "42",
        "O3": "46",
        "SO2": "10",
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    },
    {
        "fid": "7968",
        "Fecha": "1997\/01\/09",
        "Pb": "0,09",
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        "O3": "57",
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        "fid": "7969",
        "Fecha": "1997\/01\/10",
        "Pb": "0,22",
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        "O3": "40",
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        "fid": "7970",
        "Fecha": "1997\/01\/11",
        "Pb": "0,13",
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        "O3": "25",
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    },
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        "fid": "7971",
        "Fecha": "1997\/01\/12",
        "Pb": "0,15",
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        "O3": "20",
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        "fid": "7972",
        "Fecha": "1997\/01\/13",
        "Pb": "0,13",
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        "O3": "24",
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        "Fecha": "1997\/01\/14",
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        "Fecha": "1997\/01\/15",
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        "Fecha": "1997\/01\/16",
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        "Fecha": "1997\/01\/17",
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        "Fecha": "1997\/01\/18",
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        "Fecha": "1997\/01\/19",
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        "Fecha": "1997\/01\/20",
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        "Fecha": "1997\/01\/21",
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        "Fecha": "1997\/01\/22",
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        "Fecha": "1997\/01\/23",
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        "Fecha": "1997\/01\/24",
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        "Fecha": "1997\/01\/25",
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        "Fecha": "1997\/01\/27",
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        "Fecha": "1997\/02\/01",
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        "Fecha": "1997\/02\/02",
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        "Fecha": "1997\/02\/03",
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        "fid": "7994",
        "Fecha": "1997\/02\/04",
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        "fid": "7995",
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        "fid": "7998",
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        "fid": "7999",
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    {
        "fid": "8000",
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        "Fecha": "1997\/11\/30",
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        "Fecha": "1997\/12\/05",
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        "Fecha": "1997\/12\/06",
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        "Fecha": "1997\/12\/07",
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        "Fecha": "1997\/12\/08",
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        "Fecha": "1997\/12\/09",
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        "Fecha": "1997\/12\/11",
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        "Fecha": "1997\/12\/12",
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        "Fecha": "1997\/12\/13",
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        "Fecha": "1997\/12\/14",
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        "fid": "8308",
        "Fecha": "1997\/12\/15",
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        "fid": "8309",
        "Fecha": "1997\/12\/16",
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        "fid": "8310",
        "Fecha": "1997\/12\/17",
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        "fid": "8311",
        "Fecha": "1997\/12\/18",
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        "fid": "8312",
        "Fecha": "1997\/12\/19",
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        "fid": "8313",
        "Fecha": "1997\/12\/20",
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        "fid": "8314",
        "Fecha": "1997\/12\/21",
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        "fid": "8315",
        "Fecha": "1997\/12\/22",
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        "fid": "8316",
        "Fecha": "1997\/12\/23",
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        "Fecha": "1997\/12\/25",
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        "Fecha": "1997\/12\/30",
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        "Fecha": "1997\/12\/31",
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