confidenceinterval

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 ring mail
(8, 7, D:1)
  18 stones
(-9, 9, D:1)
  17 arrows
(-19, 16, D:1)
  a +0 ring mail
(1, 20, D:1)
  a +0 robe
(-35, 22, D:1)
  13 darts
(-19, 24, D:1)
  a +2 robe
(-16, 25, D:1)
  a dart
(-34, 26, D:1)
  a cursed -1,-1 whip
(-24, 26, D:1)
  a cursed +0,-1 club
(-23, 26, D:1)
  a dart
(-22, 26, D:1)
  a dart
(-19, 27, D:1)
  a +0,+0 club
(-14, 30, D:1)
  a +0,+0 club
(-9, 30, D:1)
  a +0,+0 short sword
(7, 30, D:1)
  a +0 chain mail
(13, 30, D:1)
  21 sling bullets

Level 2 of the Dungeon
(0, 0, D:2)
  a +0,+0 club
(20, 22, D:2)
  a +0,+0 hand axe
  a steel dart
(20, 25, D:2)
  a steel dart
(20, 27, D:2)
  a steel dart
(16, 34, D:2)
  11 stones
(6, 37, D:2)
  a +0,+0 dagger
  a +0 robe
(17, 39, D:2)
  a +0,+0 club
(19, 42, D:2)
  a +0 leather armour
(13, 44, D:2)
  a +1,+0 dagger
(9, 48, D:2)
  a +0,+0 dagger

Level 3 of the Dungeon
(0, 0, D:3)
  a +2 leather armour
(6, 6, D:3)
  a dart of flame
(38, 6, D:3)
  4 large rocks
(28, 10, D:3)
  24 bolts
(43, 12, D:3)
  a dart
(42, 13, D:3)
  3 darts
(33, 15, D:3)
  a +0,+0 quarterstaff
(42, 15, D:3)
  7 darts
(41, 16, D:3)
  2 darts
(43, 16, D:3)
  5 darts
(45, 16, D:3)
  a cursed -2,+0 club
  a dart
(46, 16, D:3)
  a dart
(47, 16, D:3)
  a dart
(17, 25, D:3)
  a +0,+0 sling
  18 stones
(1, 28, D:3)
  a +0,+0 hammer
(12, 28, D:3)
  a +2,+0 dagger
(19, 29, D:3)
  a +4,+2 quarterstaff of chaos
(9, 34, D:3)
  8 stones
(28, 34, D:3)
  a +0,+0 club
(20, 35, D:3)
  a +0,+0 dagger

Level 4 of the Dungeon
(0, 0, D:4)
  an apple
(21, 2, D:4)
  a +0 ring mail
(9, 4, D:4)
  an uncursed amulet of stasis
(5, 5, D:4)
  a +0,+0 flail
  (unseen)
(36, 12, D:4)
  a +0,+0 dagger
(37, 15, D:4)
  a +0,+0 dagger
(32, 18, D:4)
  a rat corpse
(35, 18, D:4)
  a +0,+0 short sword
(35, 19, D:4)
  a +0,+0 dagger
(21, 20, D:4)
  14 sling bullets