Table:
0
A
B
C
D
E
F
1
Rank
Mountain Peak
Mountain Range
Elevation
Prominence
Isolation
2
1
Mount Rainier
Cascade Range
4393.293 = 14,411feet 4392m
4027.439 = 13,211feet 4027m
01175.46 = 730.4miles 1175.5km
3
2
Mount Adams
Cascade Range
3742.988 = 12,277feet 3743m
2474.390 = 8,116feet 2474m
00075.14 = 46.7miles 75.1km
4
3
Mount Baker
Cascade Range
3285.976 = 10,778feet 3286m
2706.707 = 8,878feet 2706m
00213.71 = 132.8miles 213.7km
5
4
Glacier Peak
Cascade Range
3213.720 = 10,541feet 3286m
2292.378 = 7,519feet 2292m
00090.18 = 56.0miles 90.2km
6
5
Bonanza Peak
Cascade Range
2899.695 = 9,511feet 2899m
1131.402 = 3,711feet 1,131m
00023.04 = 14.4miles 23.2km
7
6
Mount Stuart
Cascade Range
2870.427 = 9,415feet 2870m
1625.524 = 5,335feet 1,626m
00072.00 = 45.0miles 72.0km
8
7
Mount Fernow
Cascade Range
2819.817 = 9,249feet 2819m
0857.012 = 2,811feet 857m
00009.44 = 5.9miles 9.5km
9
8
Goode Mountain
Cascade Range
2804.878 = 9,200feet 2810m
0857.012 = 3,808feet 1,161m
00027.20 = 17.0miles 27.2km
10
9
Mount Shuksan
Cascade Range
2782.622 = 9,127feet 2782m
1340.549 = 4,397feet 1,340m
00016.64 = 10.4miles 16.7km
11
10
Buckner Mountain
Cascade Range
2778.659 = 9,114feet 2778m
0925.000 = 3,034feet 925m
00006.61 = 4.1miles 6.6km
12
11
Jack Mountain
Cascade Range
2764.024 = 9,066feet 2763m
1276.220 = 4,186feet 1,276m
00026.00 = 16.3miles 26.0km
13
12
Mount Spickard
Cascade Range
2737.500 = 8,979feet 2738m
1457.021 = 4,779feet 1,457m
00036.46 = 19.0miles 30.5km
14
13
Black Peak
Cascade Range
2734.756 = 8,970feet 2734m
1051.829 = 3,450feet 1,051m
00008.16 = 5.1miles 8.2km
15
14
Mount Redoubt
Cascade Range
2730.488 = 8,956feet 2730m
0502.744 = 1,649feet 503m
00004.56 = 2.9miles 4.6km
16
15
North Gardner Mountain
Cascade Range
2730.488 = 8,956feet 2730m
1218.293 = 3,996feet 1,218m
00043.68 = 27.3miles 43.7km
17
16
Dome Peak
Cascade Range
2719.512 = 8,920feet 2719m
0926.829 = 3,040feet 927m
00043.68 = 27.3miles 43.7km
18
17
Silver Star Mountain
Cascade Range
2705.793 = 8,875feet 2705m
0740.854 = 2,430feet 742m
00007.10 = 4.4miles 7.1km

Questions and formulas:
Question: How many different isolation numbers does the Jack Mountain peak have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Jack Mountain"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,B2:B18="Jack Mountain"),6))
Level: medium
Question: What's the isolation of the mountain peak with a prominence of 1340.549 = 4,397feet 1,340m?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="1340.549 = 4,397feet 1,340m"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,E2:E18="1340.549 = 4,397feet 1,340m"),6))
Level: medium
Question: How many different isolation numbers does the peak with an elevation of 2782.622 = 9,127feet 2782m have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="2782.622 = 9,127feet 2782m"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,D2:D18="2782.622 = 9,127feet 2782m"),6))
Level: medium
Question: What's the isolation of the mountain peak with an elevation of 2705.793 = 8,875feet 2705m?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="2705.793 = 8,875feet 2705m"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,D2:D18="2705.793 = 8,875feet 2705m"),6))
Level: medium
Question: What's the isolation of the mountain peak with prominence of 1340.549 = 4,397feet 1,340m?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="1340.549 = 4,397feet 1,340m"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,E2:E18="1340.549 = 4,397feet 1,340m"),6))
Level: medium