everest: data_dictionary: 25 rows

Column names, types, and descriptions for the summit_master table.

25 rows

descending

Link	rowid ▼	column	type	description
1	1	climber_id	string	Unique climber-attempt id
2	2	year	int	Year of the attempt (1990-2026)
3	3	season	string	spring / autumn / winter / summer (~86% spring)
4	4	route	string	South Col-SE Ridge (Nepal) / North Ridge-NE (Tibet) / other
5	5	age	int	Climber age
6	6	sex	string	M / F
7	7	is_hired_staff	int	1 if hired high-altitude worker (e.g. Sherpa staff)
8	8	years_climbing	int	Years of climbing experience
9	9	prior_8000m_peaks	int	Number of 8000m peaks previously summited — the strongest predictor
10	10	prior_everest_attempts	int	Previous Everest attempts
11	11	highest_prev_altitude_m	int	Highest altitude previously reached (m)
12	12	operator_tier	string	budget / mid / premium / independent
13	13	team_size	int	Number of climbers in the team
14	14	sherpa_ratio	float	Hired high-altitude support per client (0-3)
15	15	uses_oxygen	int	1 if using supplemental oxygen
16	16	o2_start_altitude_m	int	Altitude where supplemental O2 begins (0 if none)
17	17	days_acclimatizing	int	Days spent acclimatizing before the summit push
18	18	camps_established	int	Number of camps established
19	19	summit_window_days	int	Length of the usable summit weather window (days)
20	20	weather_score	float	Weather quality during the push (0-10, higher = better)
21	21	jetstream_risk	float	Jet-stream disruption risk (0-10)
22	22	queue_minutes_above_8000	int	Minutes queuing in the death zone (a post-2012 phenomenon)
23	23	turnaround_reason	string	Why they turned back (weather_window_closed, death_zone_crowding, oxygen_exhaustion, exhaustion_altitude_sickness, frostbite, team_decision, illness, other) or summited
24	24	serious_incident	int	1 if a serious incident occurred (frostbite/injury class) — rare (~2%)
25	25	summited	int	TARGET: 1 if the climber reached the summit

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CREATE TABLE "data_dictionary" (
   "column" TEXT,
   "type" TEXT,
   "description" TEXT
);