What percentage of browsers were using Firefox or other Mozilla browsers during the period in which 1.93% were using Chrome?
CREATE TABLE "usa_usage_share_data_from_stat_owl_com" (
  "internet_explorer" text,
  "firefox_other_mozilla" text,
  "chrome" text,
  "safari" text,
  "opera" text
);
SELECT "firefox_other_mozilla" FROM "usa_usage_share_data_from_stat_owl_com" WHERE "chrome"='1.93%';