2) It should work if you write it as:

#Temperature, Humidity
1e0, 1e0, 3.3e1
1e1, 1e1, 2.6e0

'Text' data is often stored in scientific notation, eg

Time, Temperature, Humidity
1e0, 1e0, 3.3e1
1e1, 1e1, 2.6e0

1) "1e1" (etc.) is not recognised (as 10^1 = 10)

2) Headings - Could the import function assume that:

if( First line of data contains some non-numeric characters )
{
    Use the fields as labels
    field #0 = X-Axis               //"X"--->"Time"
    field #1 = Series (curve) #1    //Curve #1 = "Temperature"
    field #2 = Series (curve) #2    //Curve #2 = "Humidty"
}

Regards
Stephen