Table:
0
A
B
C
D
E
F
1
Character
Portrayed by
First appearance
Last appearance
Duration
Episodes
2
Mac Taylor CSI Detective
Gary Sinise
Blink 1, 2, 3
"Today is Life"
1.01–9.17
197
3
Jo Danville CSI Detective
Sela Ward
The 34th Floor
"Today is Life"
7.01–9.17
57
4
Danny Messer CSI Detective
Carmine Giovinazzo
Blink 1
"Today is Life"
1.01–9.17
197
5
Lindsay Monroe Messer CSI Detective
Anna Belknap
Zoo York
"Today is Life"
2.03–9.17
172 4
6
Dr. Sid Hammerback Chief Medical Examiner
Robert Joy
Dancing with the Fishes
"Today is Life"
2.05–9.17
168 4
7
Adam Ross Lab Technician
A. J. Buckley
Bad Beat
"Today is Life"
2.08–9.17
141 4
8
Dr. Sheldon Hawkes CSI
Hill Harper
Blink 1
"Today is Life"
1.01–9.17
197
9
Don Flack Homicide Detective
Eddie Cahill
Blink
"Today is Life"
1.01–9.17
197
10
Aiden Burn CSI Detective
Vanessa Ferlito
Blink 1
"Heroes"
1.01–2.02, 2.23
26

Questions and formulas:
Question: On which episode did actress Sela Ward make her last appearance?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Sela Ward"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="Sela Ward"),4))
Level: medium
Question: Which actors first appeared in "Zoo York"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Zoo York"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,C2:C10="Zoo York"),2))
Level: medium
Question: How many episodes did actress Vanessa Ferlito appear in?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Vanessa Ferlito"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="Vanessa Ferlito"),6))
Level: medium
Question: Which actors first appeared in episode Blink 1, 2, 3?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Blink 1, 2, 3"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,C2:C10="Blink 1, 2, 3"),2))
Level: medium
Question: What was the duration of Robert Joy's portrayal?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Robert Joy"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="Robert Joy"),5))
Level: medium
Question: Which episode did actor A. J. Buckley last appear in?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="A. J. Buckley"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="A. J. Buckley"),4))
Level: medium