function heat1_c(HI1_C){
    if(HI1_C.RHumidity.value > 100){
        alert("Relative humidity cannot exceed 100%.");
    }
    else if (HI1_C.RHumidity.value < 0) {
        alert("Relative humidity cannot be less than 0%.");
    }
    else if (parseFloat(HI1_C.tempair.value) <= 4.44) {
        var hi = HI1_C.tempair.value;
    }
    else{
        var tempair_in_fahrenheit = 1.80 * HI1_C.tempair.value + 32.0;
        var hitemp = 61.0+((tempair_in_fahrenheit-68.0)*1.2)+(HI1_C.RHumidity.value*0.094);
        var fptemp = parseFloat(HI1_C.tempair.value);
        var hifinal = 0.5*(fptemp+hitemp);

        if(hifinal > 79.0){
            var hi = -42.379 + 2.04901523 * tempair_in_fahrenheit + 10.14333127 * HI1_C.RHumidity.value - 0.22475541 * tempair_in_fahrenheit * HI1_C.RHumidity.value - 6.83783 * (Math.pow(10, -3)) * (Math.pow(tempair_in_fahrenheit, 2)) - 5.481717 * (Math.pow(10, -2)) * (Math.pow(HI1_C.RHumidity.value, 2)) + 1.22874 * (Math.pow(10, -3)) * (Math.pow(tempair_in_fahrenheit, 2)) * HI1_C.RHumidity.value + 8.5282 * (Math.pow(10, -4)) * tempair_in_fahrenheit * (Math.pow(HI1_C.RHumidity.value, 2)) - 1.99 * (Math.pow(10, -6)) * (Math.pow(tempair_in_fahrenheit, 2)) * (Math.pow(HI1_C.RHumidity.value,2));

            if((HI1_C.RHumidity.value <= 13) && (tempair_in_fahrenheit >= 80.0) && (tempair_in_fahrenheit <= 112.0)) {
                var adj1 = (13.0-HI1_C.RHumidity.value)/4.0;
                var adj2 = Math.sqrt((17.0-Math.abs(tempair_in_fahrenheit-95.0))/17.0);
                var adj = adj1 * adj2;
                var hi = hi - adj;
            }
            else if ((HI1_C.RHumidity.value > 85.0) && (tempair_in_fahrenheit >= 80.0) && (tempair_in_fahrenheit <= 87.0)) {
                var adj1 = (HI1_C.RHumidity.value-85.0)/10.0;
                var adj2 = (87.0-tempair_in_fahrenheit)/5.0;
                var adj = adj1 * adj2;
                var hi = hi + adj;
            }
        }
        else{
            var hi = hifinal;
        }
    }
    twoplaces_rh1 = hi.toFixed(1);
    celsius_temp_rh1 = (hi - 32) * .556;
    twoplaces_c_rh1 = celsius_temp_rh1.toFixed(1);
    HI1_C.heatindex.value = twoplaces_rh1 + " F" +  " / " + twoplaces_c_rh1 + " C";

const form = document.forms[4];
const t = form.elements[0];
const rh = form.elements[4];
const calc = form.elements[5];
const out = form.elements[7];
const rhs = [40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100];
const temps = [80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110];

var nt = temps.length;
var nrh = rhs.length;

for (let i = 0; i < nt; i++) {
    for (let j = 0; j < nrh; j++) {
        t.value = temps[i];
        rh.value = rhs[j];
        calc.click();
        result[i][j] = out.value.split(' ')[0];
        console.log(temps[i] + " " + rhs[j] + " " + result[i][j])
    }
}

// make csv
let csvContent = ''

result.forEach(row => {
  csvContent += row.join(',') + '\n'
})

const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8,' })
const objUrl = URL.createObjectURL(blob)

const link = document.createElement('a')
link.setAttribute('href', objUrl)
link.setAttribute('download', 'File.csv')
link.textContent = 'Click to Download'

document.querySelector('body').append(link)

link //click on link displayed