function snippet

async function getValuesThenPlotChartsAndTabulateData() {

    let queryUrl = generateQueryUrl();
    console.log(queryUrl);

    const options = { headers: { 'Authorization': `Bearer ${ API.access_token }` } };
    let response = await fetch(queryUrl, options);

    let historianData = await response.json();
    let timeStampsAndValues = historianData['Data'][0].Samples;

    // display error message in case of Historian Error code 7: "Service call to central buffer server fail."
    if (historianData['Data'] === undefined) {
        errorMessage.style.display = 'block';
    }

    let timeStampsAndValues2 = historianData['Data'][1].Samples || [];
    let timeStampsAndValues3 = historianData['Data'][2].Samples || [];
    let timeStampsAndValues4 = historianData['Data'][3].Samples || [];

    console.log(timeStampsAndValues);