JSFiddle - React, Tailwind, and code Playground

JavaScript

var input = {
    "data": [{
        "t": {
            "level": "35",
            "longtitude": "121.050321666667",
            "latitude": "14.6215366666667",
            "color": "#040098"
        }},
    {
        "t": {
            "level": "31",
            "longtitude": "121.050316666667",
            "latitude": "14.621545",
            "color": "#040098"
        }},
    {
        "t": {
            "level": "29",
            "longtitude": "121.050323333333",
            "latitude": "14.62153",
            "color": "#040098"
        }}]
};

var data = input.data,
    result = {level: [], longtitude: [], latitude: [], color: []};

for (var i = 0, n = data.length; i < n; i += 1) {
    var info = data[i].t;
    for (var property in info) {
        if (info.hasOwnProperty(property)) {
            result[property].push(info[property]);
        }
    }
}

console.log(result.level);
console.log(result.latitude);
console.log(result.longtitude);
console.log(result.color);