Table:
0
A
B
C
D
E
F
1
Episode No. Episode No. refers to the episodes number in the overall series, whereas Series No. refers to the episodes number in this particular series.
Series No.
Episode
Director
Writer(s)
Original airdate
2
16
1
"A Little Lobbying"
Antonia Bird
Jeremy Brock and Paul Unwin
12September1987
3
17
2
"A Drop of the Hard Stuff"
Antonia Bird
Roy Mitchell
19September1987
4
18
3
"Shades of Love"
Michael Brayshaw
Wally K Daly
26September1987
5
19
4
"Cry for Help"
Alan Wareing
Paul Unwin and Jeremy Brock
3October1987
6
20
5
"Anaconda"
Michael Brayshaw
Ray Brennan
10October1987
7
21
6
"Lifelines"
Sharon Miller
Jeremy Brock
17October1987
8
22
7
"The Raid"
Sharon Miller
Susan Wilkins
24October1987
9
23
8
"Cross Fingers"
Alan Wareing
David Ashton
31October1987
10
24
9
"Seeking Heat"
Christopher Menaul
Ray Brennan and Jeremy Brock
7November1987
11
25
10
"Rock-a-Bye-Baby"
Sharon Miller
Ginnie Hole
14November1987
12
26
11
"Hooked"
Michael Brayshaw
Billy Hamon
21November1987
13
27
12
"Fun Night"
Alan Wareing
Al Hunter Ashton
28November1987
14
28
13
"Peace, Brother"
Michael Brayshaw
David Ashton
5December1987
15
29
14
"Burning Cases"
Christopher Menaul
Jeremy Brock and Paul Unwin
12December1987

Questions and formulas:
Question: How many episodes are numbered 14 in the series?
Formula: ROWS(UNIQUE(FILTER(C1, B1=14)))
Formula2: ROWS(UNIQUE(FILTER(C2:C15, B2:B15=14)))
Level: medium
Question: How many writers for the episode "peace, brother"?
Formula: ROWS(UNIQUE(FILTER(E1, C1="Peace, Brother")))
Formula2: ROWS(UNIQUE(FILTER(E2:E15, C2:C15="Peace, Brother")))
Level: medium
Question: What series number is the episode "peace, brother"?
Formula: SUMIFS(B1,C1,"Peace, Brother")
Formula2: SUMIFS(B2:B15,C2:C15,"Peace, Brother")
Level: easy
Question: How many times did episode 17 originally air?
Formula: ROWS(UNIQUE(FILTER(F1, A1=17)))
Formula2: ROWS(UNIQUE(FILTER(F2:F15, A2:A15=17)))
Level: medium
Question: What is the original air date for "rock-a-bye-baby"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Rock-a-Bye-Baby"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,C2:C15="Rock-a-Bye-Baby"),6))
Level: medium
Question: What is the original air date(s) for "the raid"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="The Raid"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,C2:C15="The Raid"),6))
Level: medium