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 | Height | Name | Road number | Type |
| --- | --- | --- | --- | --- |
| 1 | 670 m | Cairnwell Pass | A93 | Pass |
| 2 | 644 m | The Lecht | A939 | Pass |
| 3 | 625 m | Bealach na Bà | unclassified | Pass |
| 4 | 610 m | Cairn Gorm ski centre | unclassified | Dead end |
| 5 | 555 m | Lochan na Lairige | unclasssified | Pass |
| 6 | 550 m | Tom Dubh | A939 | Pass |
| 7 | 530 m | head of Glen Quaich | unclassified | Pass |
| 8 | 480 m | The Strone | B976 | Pass |
| 9 | 475 m | Glen Kyllachy | unclassified | Pass |
| 10 | 466 m | Glengonnar | B797 | Pass |
| 11 | 461 m | Guffock Hill | unclassified | Pass |
| 12 | 460 m | Pass of Drumochter | A9 | Pass |
| 13 | 452 m | Megget Stone | unclassified | Pass |
| 14 | 447 m | Cairn o' Mount | B974 | Pass |
| 15 | 443 m | North of Trinafour | unclassified | Pass |
| 16 | 438 m | West of Bridge of Brown | A939 | Pass |
| 17 | 434 m | Redstone Rig | unclassified | Pass |
| 18 | 433 m | shoulder of Shalloch on Minnoch | unclassified | Pass |
| 19 | 419 m | Cabrach | A941 | Pass |
| 20= | 418 m | Carter Bar | A68 | Pass |
| 20= | 418 m | Spittal of Glenmuick | unclassified | Dead end |
| 22 | 414 m | Loch Daimh | unclassified | Dead end |
| 23 | 412 m | Flecket Hill (near Devil's Beeftub ) | A701 | Pass |
| 24 | 406 m | Torfichen Hill | B7007 | Pass |
| 25 | 405 m | Slochd Summit | A9 | Pass |
| 26 | 400 m | Glen Cochill | A826 | Pass |
| 27 | 393 m | Carn an t-Suidhe | B862 | Pass |
| 28 | 390 m | Suie Hill | unclassified | Pass |
Question:
What is the rad number for the dead end in rank 22?
Answer:
unclassified