Table:
0
A
B
C
D
E
1
Camera
Filter
Wavelength
Total exposure time
Exposures
2
WFPC2
F300W
300nm (U-band)
140,400s
106
3
WFPC2
F450W
450nm (B-band)
103,500s
67
4
WFPC2
F606W
606nm (V-band)
99,300s
53
5
WFPC2
F814W
814nm (I-band)
113,900s
57
6
NICMOS NIC3
F110W
110nm (J-band)
162,600s
142
7
NICMOS NIC3
F160W
160nm (H-band)
171,200s
150
8
NICMOS NIC3
F222M
222mm (K-band)
105,000s
102
9
STIS
50CCD
350–950nm
155,600s
67
10
STIS
F28X50LP
550–960nm
49,800s
64
11
STIS
MIRFUV
150–170nm
52,100s
25
12
STIS
MIRNUV
160–320nm
22,600s
12
13
Spectroscopy
G430M
302.2–356.6nm
57,100s
61
14
Spectroscopy
G140L
115–173nm
18,500s
8
15
Spectroscopy
E230M
227.8–312nm
151,100s
69

Questions and formulas:
Question: what is the filter when the wavelength is 222mm (k-band)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="222mm (K-band)"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,C2:C15="222mm (K-band)"),2))
Level: medium
Question: how many times was the exposures 53?
Formula: ROWS(UNIQUE(FILTER(A1, E1=53)))
Formula2: ROWS(UNIQUE(FILTER(A2:A15, E2:E15=53)))
Level: medium
Question: how many exposures where there when the total exposure time is 105,000s?
Formula: SUMIFS(E1,D1,"105,000s")
Formula2: SUMIFS(E2:E15,D2:D15,"105,000s")
Level: easy
Question: what is the camera used when the wavelength is 814nm (i-band)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="814nm (I-band)"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,C2:C15="814nm (I-band)"),1))
Level: medium