Table:
0
A
B
C
D
E
1
Episode
Broadcast date
Run time
Viewers (in millions)
Archive
2
" Episode One "
2November1968
24:32
7.3
Only stills and/or fragments exist
3
" Episode Two "
9November1968
24:26
7.1
16mm t/r
4
" Episode Three "
16November1968
23:44
7.1
16mm t/r
5
" Episode Four "
23November1968
24:18
6.4
Only stills and/or fragments exist
6
" Episode Five "
30November1968
23:25
6.7
16mm t/r
7
" Episode Six "
7December1968
23:20
6.5
16mm t/r
8
" Episode Seven "
14December1968
24:46
7.2
16mm t/r
9
" Episode Eight "
21December1968
25:03
7.0
16mm t/r

Questions and formulas:
Question: How many millions viewers watched the episode that ran 23:25?
Formula: SUMIFS(D1,C1,"23:25")
Formula2: SUMIFS(D2:D9,C2:C9,"23:25")
Level: easy
Question: What is the broadcast date of the episode on 16mm t/r that ran 23:25?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="16mm t/r")*(C1="23:25")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,(E2:E9="16mm t/r")*(C2:C9="23:25")),2))
Level: medium
Question: Which episode was watched by 7.2 million viewers?
Formula: LET(query1,SUMMARIZE(A1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=7.2))
Formula2: LET(query1,SUMMARIZE(A2:A9,SUMX(D2:D9)),FILTER(query1,CHOOSECOLS(query1,2)=7.2))
Level: hard
Question: What episode had a run time of 24:18?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="24:18"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,C2:C9="24:18"),1))
Level: medium