NetHack bones loot and monster frequency by level

Based on a large collection of about 5,000 NetHack 3.4.3 bones files. Note that the distribution of bones is not at all even; many of the shallower and Mines levels have data based on hundreds of bones files, while the lower levels of Gehennom and several Quest levels may only have a handful of bones files available.

Select a bones-eligible level to see the distribution of loot in bones files, according to the dungeon level:

(The number in parentheses is the number of bones files available for that level.)

Dungeons of Doom shallow levels: 4-10 with Oracle and Big Room
Dungeons of Doom deep levels: 11-28 including the Rogue level
The Gnomish Mines (entire branch)
Gehennom (entire branch)

Specific levels:
Dungeons of Doom 4 (376)
Dungeons of Doom 5 (380)
Dungeons of Doom 6 (248)
Dungeons of Doom: Delphi (Oracle level) (401)
Dungeons of Doom 7 (159)
Dungeons of Doom 8 (117)
Dungeons of Doom 9 (67)
Dungeons of Doom 10 (61)
Dungeons of Doom: the Big Room (59)
Dungeons of Doom 11 (59)
Dungeons of Doom 12 (32)
Dungeons of Doom 13 (27)
Dungeons of Doom 14 (28)
Dungeons of Doom: reincarnation (Rogue) level (17)
Dungeons of Doom 15 (24)
Dungeons of Doom 16 (20)
Dungeons of Doom 17 (18)
Dungeons of Doom 18 (24)
Dungeons of Doom 19 (31)
Dungeons of Doom 20 (26)
Dungeons of Doom 21 (25)
Dungeons of Doom 22 (22)
Dungeons of Doom 23 (26)
Dungeons of Doom 24 (22)
Dungeons of Doom 25 (18)
Dungeons of Doom 26 (18)
Dungeons of Doom 27 (12)
Dungeons of Doom 28 (18)
Gnomish Mines 1 (414)
Gnomish Mines 2 (429)
Gnomish Mines 3 (215)
Gnomish Mines: Minetown (452)
Gnomish Mines 4 (149)
Gnomish Mines 5 (222)
Gnomish Mines 6 (152)
Gnomish Mines 7 (147)
Gnomish Mines 8 (65)
Gehennom: the Valley of the Dead (49)
Gehennom 2 (15)
Gehennom 3 (10)
Gehennom 4 (14)
Gehennom: Asmodeus' Lair (15)
Gehennom: Baalzebub's Lair (18)
Gehennom: Juiblex's Swamp (19)
Gehennom 5 (6)
Gehennom 6 (6)
Gehennom 7 (8)
Gehennom 8 (11)
Gehennom: Orcus-town (16)
Gehennom 9 (7)
Gehennom 10 (12)
Gehennom 11 (4)
Gehennom 12 (6)
Gehennom 14 (9)
Gehennom 15 (4)
Gehennom: Wizard's Tower 2 (14)
Gehennom 16 (6)
Gehennom 17 (1)
Gehennom 18 (3)
Gehennom 19 (3)
Gehennom: Fake Wizard Tower (12)
Gehennom 21 (2)
Gehennom 22 (1)
Vlad's Tower 2 (3)
Arc Quest 2 (1)
Arc Quest: Locate level (2)
Arc Quest 4 (2)
Arc Quest 5 (3)
Bar Quest 2 (5)
Bar Quest: Locate level (12)
Bar Quest 4 (10)
Bar Quest 5 (7)
Cav Quest: Locate level (2)
Cav Quest 4 (8)
Cav Quest 5 (3)
Hea Quest 2 (1)
Hea Quest: Locate level (3)
Hea Quest 4 (5)
Hea Quest 5 (4)
Kni Quest 2 (3)
Kni Quest: Locate level (2)
Kni Quest 4 (2)
Kni Quest 5 (1)
Mon Quest 2 (2)
Mon Quest: Locate level (7)
Mon Quest 4 (13)
Mon Quest 5 (10)
Pri Quest 2 (3)
Pri Quest: Locate level (20)
Pri Quest 4 (2)
Pri Quest 5 (3)
Ran Quest 2 (1)
Ran Quest: Locate level (6)
Ran Quest 4 (1)
Ran Quest 5 (2)
Rog Quest 2 (1)
Sam Quest 2 (4)
Sam Quest: Locate level (9)
Sam Quest 4 (2)
Tou Quest: Locate level (3)
Tou Quest 4 (2)
Val Quest 2 (1)
Val Quest: Locate level (16)
Val Quest 4 (16)
Val Quest 5 (6)
Wiz Quest 2 (3)
Wiz Quest: Locate level (9)
Wiz Quest 4 (6)
Wiz Quest 5 (3)