Table:
0
A
B
C
D
E
F
G
H
I
J
1
Source
Date
Method
iOS
Android
BlackBerry
Symbian / Series 40
Bada
Windows
Other
2
comScore Reports (US only)
May-13
subscribers, US
39.20%
52.40%
4.80%
0.40%
N/A
3.00%
N/A
3
Gartner
May-13
units sold
18.2%
74.4%
3.0%
0.6%
0.7%
2.9%
0.3%
4
Gartner
Aug-13
units sold
14.2%
79.0%
2.7%
0.3%
0.4%
3.3%
0.2%
5
International Data Corporation
May-13
units shipped
17.3%
75.0%
2.9%
0.6
N/A
3.2%
0.0%
6
Net Market Share
July-13
browsing
58.26%
25.28%
3.23%
2.23%
0.05%
1.15%
0.19%
7
StatCounter Global Stats
July-13
browsing
24.80%
38.34%
3.66%
20.76%
4.64%
1.52
2.66
8
Wikimedia
Mar-13
browsing
66.53%
25.93%
2.02%
3.03%
0.42%
1.85%
0.7%

Questions and formulas:
Question: What is the percentage of Android use when Windows is 1.15%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:J1,I1="1.15%"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:J8,I2:I8="1.15%"),5))
Level: medium
Question: On which dates was the value of Bada 0.05%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:J1,H1="0.05%"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:J8,H2:H8="0.05%"),2))
Level: medium
Question: When the value of "other" is 0.7%, what is the percentage for Windows?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:J1,J1="0.7%"),9))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:J8,J2:J8="0.7%"),9))
Level: medium
Question: When Symbian/Series 40 is 0.40%, what is the percentage of "other"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:J1,G1="0.40%"),10))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:J8,G2:G8="0.40%"),10))
Level: medium
Question: Which source shows Blackberry at 2.9%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:J1,F1="2.9%"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:J8,F2:F8="2.9%"),1))
Level: medium