Table:
0
A
B
C
D
E
1
Episode
Broadcast date
Run time
Viewers (in millions)
Archive
2
" Episode 1 "
14September1968
21:27
6.6
16mm t/r
3
" Episode 2 "
21September1968
21:39
6.5
16mm t/r
4
" Episode 3 "
28September1968
19:29
7.2
16mm t/r
5
" Episode 4 "
5October1968
19:14
7.3
16mm t/r
6
" Episode 5 "
12October1968
18:00
6.7
16/35mm t/r

Questions and formulas:
Question: How many millions of viewers were there for the episode with a run time of 18:00?
Formula: SUMIFS(D1,C1,"18:00")
Formula2: SUMIFS(D2:D6,C2:C6,"18:00")
Level: easy
Question: What was the archive for episode with 6.6 million viewers?
Formula: LET(query1,SUMMARIZE(E1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=6.6))
Formula2: LET(query1,SUMMARIZE(E2:E6,SUMX(D2:D6)),FILTER(query1,CHOOSECOLS(query1,2)=6.6))
Level: hard