Table:
0
A
B
C
D
E
F
G
1
Season
Network
Season premiere
Season finale
TV season
Ranking
Viewers (in millions)
2
1st
UPN
September 11, 2000
May 14, 2001
2000–2001
#136
4.0
3
2nd
UPN
September 10, 2001
May 20, 2002
2001–2002
#129
4.2
4
3rd
UPN
September 23, 2002
May 19, 2003
2002–2003
#133
4.0
5
4th
UPN
September 15, 2003
May 24, 2004
2003–2004
#128
3.6
6
5th
UPN
September 20, 2004
May 23, 2005
2004–2005
#129
3.4
7
6th
UPN
September 19, 2005
May 8, 2006
2005–2006
#135
3.4
8
7th
CW
October 1, 2006
May 7, 2007
2006–2007
#138
2.5

Questions and formulas:
Question: The season premiere aired on September 11, 2000 aired on how many networks? 
Formula: ROWS(UNIQUE(FILTER(B1, C1="September 11, 2000")))
Formula2: ROWS(UNIQUE(FILTER(B2:B8, C2:C8="September 11, 2000")))
Level: medium
Question: What was the ranking of the season finale aired on May 8, 2006? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,D1="May 8, 2006"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,D2:D8="May 8, 2006"),6))
Level: medium