what is the channel width that overlaps channels 1,3-6?
CREATE TABLE "b_802_11_channel_to_frequency_map" (
  "channel" real,
  "center_frequency" text,
  "frequency_delta" text,
  "channel_width" text,
  "overlaps_channels" text
);
SELECT "channel_width" FROM "b_802_11_channel_to_frequency_map" WHERE "overlaps_channels"='1,3-6';