-
dataset = FileAttachment("Akaki_WQ-1.csv").csv({typed: true})
+
dataset = {
  const data = await FileAttachment("Akaki_WQ-1.csv").csv({typed: true});
  for (const column of data.columns) {
    for (const d of data) {
      // If any string values appear to be comma-formatted numbers,
      // remove the commas and then coerce them to proper numbers.
      if (typeof d[column] === "string" && /^(\d|,)+(\.\d+)?$/.test(d[column])) {
        d[column] = +d[column].replace(/,/g, "");
      }
    }
  }
  return data;
}