Table:
0
A
B
C
D
E
1
Episode
Broadcast date
Run time
Viewers (in millions)
Archive
2
" Episode 1 "
27April1968
23:47
7.2
Only stills and/or fragments exist
3
" Episode 2 "
4May1968
22:50
6.9
Only stills and/or fragments exist
4
" Episode 3 "
11May1968
24:25
7.5
16mm t/r
5
" Episode 4 "
18May1968
24:14
8.6
Only stills and/or fragments exist
6
" Episode 5 "
25May1968
21:55
6.8
Only stills and/or fragments exist
7
" Episode 6 "
1June1968
23:10
6.5
35mm t/r

Questions and formulas:
Question: Name the episode for run time of 22:50
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="22:50"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="22:50"),1))
Level: medium
Question: Name the broadcast date of 6.9 million viewers
Formula: LET(query1,SUMMARIZE(B1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=6.9))
Formula2: LET(query1,SUMMARIZE(B2:B7,SUMX(D2:D7)),FILTER(query1,CHOOSECOLS(query1,2)=6.9))
Level: hard
Question: Name the broadcast date of run time being 24:14
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="24:14"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="24:14"),2))
Level: medium