Table:
0
A
B
C
D
E
1
Episode
Broadcast date
Run time
Viewers (in millions)
Archive
2
" Episode 1 "
21March1970
24:33
7.1
PAL 2" colour videotape
3
" Episode 2 "
28March1970
24:39
7.6
Chroma dot colour recovery
4
" Episode 3 "
4April1970
24:38
8.0
Chroma dot colour recovery
5
" Episode 4 "
11April1970
24:37
9.3
Chroma dot colour recovery
6
" Episode 5 "
18April1970
24:17
7.1
PAL D3 colour restoration
7
" Episode 6 "
25April1970
24:31
6.9
Chroma dot colour recovery
8
" Episode 7 "
2May1970
24:32
6.4
Chroma dot colour recovery

Questions and formulas:
Question: How many episodes ran 24:33?
Formula: ROWS(UNIQUE(FILTER(A1, C1="24:33")))
Formula2: ROWS(UNIQUE(FILTER(A2:A8, C2:C8="24:33")))
Level: medium
Question: On broadcast date is 25april1970, how many people tuned in?
Formula: SUMIFS(D1,B1,"25April1970")
Formula2: SUMIFS(D2:D8,B2:B8,"25April1970")
Level: easy
Question: On broadcast date is 28march1970, how many people tuned in?
Formula: SUMIFS(D1,B1,"28March1970")
Formula2: SUMIFS(D2:D8,B2:B8,"28March1970")
Level: easy
Question: On broadcast date is 21march1970, how many people tuned in?
Formula: SUMIFS(D1,B1,"21March1970")
Formula2: SUMIFS(D2:D8,B2:B8,"21March1970")
Level: easy
Question: What is the archive of the show that aired on 18april1970?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="18April1970"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,B2:B8="18April1970"),5))
Level: medium