Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Mountain Peak | Mountain Range | Elevation | Prominence | Isolation | Location |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Mount Whitney | Sierra Nevada | 14,505 ft\n4421 m | 10,080 ft\n3072 m | 1,646 mi\n2,649 km | 36°34′43″N 118°17′31″W﻿ / ﻿36.5786°N 118.2920°W |
| 2 | Mount Williamson | Sierra Nevada | 14,379 ft\n4383 m | 1,677 ft\n511 m | 5.4 mi\n8.7 km | 36°39′21″N 118°18′40″W﻿ / ﻿36.6559°N 118.3111°W |
| 3 | White Mountain Peak | White Mountains | 14,252 ft\n4344 m | 7,196 ft\n2193 m | 67 mi\n109 km | 37°38′03″N 118°15′21″W﻿ / ﻿37.6341°N 118.2557°W |
| 4 | North Palisade | Sierra Nevada | 14,248 ft\n4343 m | 2,894 ft\n882 m | 32 mi\n52 km | 37°05′39″N 118°30′52″W﻿ / ﻿37.0943°N 118.5145°W |
| 5 | Mount Shasta | Cascade Range | 14,179 ft\n4322 m | 9,832 ft\n2997 m | 335 mi\n539 km | 41°24′33″N 122°11′42″W﻿ / ﻿41.4092°N 122.1949°W |
| 6 | Mount Humphreys | Sierra Nevada | 13,992 ft\n4265 m | 2,563 ft\n781 m | 15 mi\n24 km | 37°16′14″N 118°40′23″W﻿ / ﻿37.2705°N 118.6730°W |
| 7 | Mount Keith | Sierra Nevada | 13,982 ft\n4262 m | 1,936 ft\n590 m | 3.1 mi\n5.0 km | 36°42′00″N 118°20′37″W﻿ / ﻿36.7001°N 118.3436°W |
| 8 | Mount Darwin | Sierra Nevada | 13,837 ft\n4218 m | 1,891 ft\n576 m | 7 mi\n11 km | 37°10′01″N 118°40′20″W﻿ / ﻿37.1669°N 118.6721°W |
| 9 | Mount Kaweah | Sierra Nevada | 13,807 ft\n4209 m | 2,027 ft\n618 m | 11 mi\n17 km | 36°31′34″N 118°28′43″W﻿ / ﻿36.5261°N 118.4785°W |
| 10 | Mount Morgan | Sierra Nevada | 13,758 ft\n4193 m | 2,648 ft\n807 m | 10 mi\n16 km | 37°24′19″N 118°43′58″W﻿ / ﻿37.4053°N 118.7329°W |
| 11 | Mount Gabb | Sierra Nevada | 13,747 ft\n4190 m | 2,601 ft\n793 m | 4.3 mi\n6.9 km | 37°22′37″N 118°48′09″W﻿ / ﻿37.3769°N 118.8025°W |
| 12 | Mount Tom | Sierra Nevada | 13,657 ft\n4163 m | 1,992 ft\n607 m | 4.8 mi\n7.7 km | 37°22′34″N 119°10′44″W﻿ / ﻿37.3762°N 119.1789°W |
| 13 | Mount Dubois | White Mountains | 13,565 ft\n4135 m | 2,339 ft\n713 m | 10 mi\n16 km | 37°47′00″N 118°20′36″W﻿ / ﻿37.7834°N 118.3432°W |
| 14 | Mount Pinchot | Sierra Nevada | 13,500 ft\n4115 m | 2,110 ft\n643 m | 4.7 mi\n7.6 km | 36°56′50″N 118°24′19″W﻿ / ﻿36.9473°N 118.4054°W |
| 15 | Red Slate Mountain | Sierra Nevada | 13,162 ft\n4012 m | 1,736 ft\n529 m | 8 mi\n13 km | 37°30′27″N 118°52′09″W﻿ / ﻿37.5075°N 118.8693°W |
| 16 | Mount Ritter | Sierra Nevada | 13,149 ft\n4008 m | 3,990 ft\n1216 m | 22 mi\n35 km | 37°41′21″N 119°11′59″W﻿ / ﻿37.6891°N 119.1996°W |
Question:
how much taller is the mountain peak of mount williamson than that of mount keith?
Answer:
397 ft