Table:
0
A
B
C
D
E
1
Headstamp ID
Primer Annulus Color
Bullet Tip Color
Other Features
Functional Type
2
VII or VIIZ
Purple
None
None
Light Ball
3
VIIIZ
Purple
None
None
Heavy Ball
4
G1, G2, G3, G7 or G8
Red
None
None
Tracer
5
G4, G4Z, G6 or G6Z
Red
White
None
Tracer
6
G5 or G5Z
Red
Gray
None
Tracer
7
W1 or W1Z
Green
None
None
AP
8
B4 or B4Z
Blue
None
Step in bullet jacket
Incendiary
9
B6 or B6Z
Blue
None
None
Incendiary
10
B7 or B7Z
Blue
Blue
None
Incendiary
11
O.1
Black
Black
None
Observing
12
PG1 or PG1Z
Red
None
Blue band on case base
Practice-tracer
13
H1Z
None
None
Front half of case blackened
Grenade-Launching
14
H2
None
None
Entire case blackened
Grenade-Launching
15
H4
None
None
Case blackened 3/4" inch from each end
Grenade-Launching

Questions and formulas:
Question: For the headstamp id of h2, what was the color of the bullet tip?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="H2"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,A2:A15="H2"),3))
Level: medium
Question: For the functional type of light ball, what were the other features?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="Light Ball"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,E2:E15="Light Ball"),4))
Level: medium
Question: How many primers annulus colors were there when the color of the bullet tip was white?
Formula: ROWS(UNIQUE(FILTER(B1, C1="White")))
Formula2: ROWS(UNIQUE(FILTER(B2:B15, C2:C15="White")))
Level: medium
Question: How many bullet tips colors had other features of a blue band on case base?
Formula: ROWS(UNIQUE(FILTER(C1, D1="Blue band on case base")))
Formula2: ROWS(UNIQUE(FILTER(C2:C15, D2:D15="Blue band on case base")))
Level: medium