Table:
0
A
B
C
D
E
F
1
Year
Division
League
Reg. Season
Playoffs
Open Cup
2
1974
1
NASL
1st, Western
Champions
Did not enter
3
1975
N/A
NASL Indoor
3rd, Region 4
Did not qualify
N/A
4
1975
1
NASL
3rd, Western
Quarterfinals
Did not enter
5
1976
1
NASL
3rd, Pacific Southern
1st Round
Did not enter
6
1977
1
NASL
3rd, Pacific Southern
Semifinals
Did not enter
7
1978
1
NASL
4th, National Western
Did not qulaify
Did not enter
8
1979
1
NASL
2nd, National Western
Conference Semifinals
Did not enter
9
1979–80
N/A
NASL Indoor
5th, Western
Did not qualify
N/A
10
1980
1
NASL
2nd, National Western
Conference Championships
Did not enter
11
1980–81
N/A
NASL Indoor
1st, Western
1st Round
N/A
12
1981
1
NASL
2nd, Western
1st Round
Did not enter

Questions and formulas:
Question: What year had a 1st round playoff in the NASL indoor league?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(E1="1st round")*(C1="nasl indoor")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F12,(E2:E12="1st round")*(C2:C12="nasl indoor")),1))
Level: medium