Table:
0
A
B
C
D
E
F
1
Episode #
Title
Directed by
Written by
Original air date
Viewers (in millions)
2
1
"Pilot"
Michael Dinner
Vincent Angell, William Rotko
January15,2009
2.45
3
2
"Two Choices"
Michael Dinner
William L. Rotko
January22,2009
1.55
4
3
"Nadia"
Christine Moore
Vincent Angell
January29,2009
1.35
5
4
"Infected"
John Badham
Ray Hartung
February5,2009
N/A
6
5
"Bitsy Big-Boy"
Michael W. Watkins
Vincent Angell
February12,2009
N/A
7
6
"Hothead"
Sanford Bookstaver
John Romano
February19,2009
N/A
8
7
"Capone"
Ken Girotti
Wendy West
February26,2009
N/A
9
8
"Mercy"
Tom Verica
Mark Goffman & William L. Rotko
March5,2009
N/A
10
9
"The Walk In"
Jeremiah S. Chechik
Mark Goffman
March19,2009
N/A
11
10
"Tilt"
Charles Haid
William L. Rotko, Keith Schreier
March26,2009
N/A
12
11
"My Brother's Keeper"
Lisa Niemi
Vincent Angell & Wendy West
April9,2009
N/A
13
12
"Counterfeit"
Chris Leitch
Mark Goffman & Ray Hartung
April16,2009
N/A

Questions and formulas:
Question: How many writers were there in the episode directed by Charles Haid?
Formula: ROWS(UNIQUE(FILTER(D1, C1="Charles Haid")))
Formula2: ROWS(UNIQUE(FILTER(D2:D13, C2:C13="Charles Haid")))
Level: medium
Question: What was the original air date of "Hothead"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Hothead"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,B2:B13="Hothead"),5))
Level: medium
Question: What was the title of the episode written by Mark Goffman?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Mark Goffman"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,D2:D13="Mark Goffman"),2))
Level: medium
Question: How many original air dates did episode 12 have?h
Formula: ROWS(UNIQUE(FILTER(E1, A1=12)))
Formula2: ROWS(UNIQUE(FILTER(E2:E13, A2:A13=12)))
Level: medium
Question: How many millions of viewers watched the episode directed by Christine Moore?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Christine Moore"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,C2:C13="Christine Moore"),6))
Level: medium