$x = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
$y = array(0, 2, 4, 6, 7, 8, 9, 10, 12, 14, 15);
if ([WH:ft] > 10) return;
return ScientificInterpolation::quadratic([WH:ft], $x, $y, TRUE);