Table:
0
A
B
C
D
E
1
Model
Sensor resolution
Angle
Released
Latest software
2
TrackIR 1
60k pixels (e.g. 300×200)
33
2001
Version 3.x
3
TrackIR 2
60k pixels (e.g. 300×200)
33
2003
Version 3.x
4
TrackIR 3
355×288
33
2004
Version 4.x
5
TrackIR 3:PRO
355×288
33
2004
Version 4.x
6
TrackIR 4:PRO
355×288 (sub-sampled at 710×288)
46
2005
Version 4.x
7
TrackIR 5
640×480
51.7
2009
Version 5.x

Questions and formulas:
Question: What model was released in 2005?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1=2005),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7=2005),1))
Level: medium