By "big four" (https://www.looper.com/1196262/every-snl-season-ranked-from-worst-to-best/), this means Seasons 6 (http://www.mattalamode.com/2022/01/saturday-night-live-ranked-and-reviewed.html) (1980-81 (https://bronwynjoan.com/blog/2012/08/10/final-thoughts-on-snl-season-6-1980-81)), 11 (http://www.mattalamode.com/2023/01/saturday-night-live-ranked-and-reviewed.html) (1985-86 (https://www.onesnladay.com/reviews/season-11-1985-86/)), 20 (http://gabbyawards.blogspot.com/2016/10/saturday-night-live-season-20-reviews.html) (1994-95 (https://www.onesnladay.com/reviews/season-20-1994-95/)), and 30 (http://gabbyawards.blogspot.com/2020/12/saturday-night-live-season-30-reviews_30.html) (2004-05 (https://www.onesnladay.com/reviews/season-30-2004-05/)).