ERDDAP > info > twl_extremes

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	Extreme Value Analysis output (twl_extremes)		M	background			+ATLANTIC_CoLAB	twl_extremes

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Return value estimates are based on the Generalized Extreme Value (GEV) distribution using the Block Maxima (BM) method. Fitted using pyextremes.
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.10, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	Cecilio, Catarina
attribute	NC_GLOBAL	creator_url	String	https://github.com/tommylees112/pyextremes
attribute	NC_GLOBAL	date_created	String	2025-07-18
attribute	NC_GLOBAL	history	String	Python, pyextremes library
attribute	NC_GLOBAL	infoUrl	String	https://github.com/tommylees112/pyextremes
attribute	NC_GLOBAL	institution	String	+ATLANTIC_CoLAB
attribute	NC_GLOBAL	keywords	String	+atlantic, analysis, bound, colab, confidence, data, extreme, extremes, identifier, interval, lower, lower_ci, output, period, return, return_period, return_value, return_value_lower_bound, return_value_upper_bound, statistics, twl, upper, upper_ci, value
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	processing_method	String	pyextremes.fit() and get_return_value() methods
attribute	NC_GLOBAL	references	String	https://github.com/tommylees112/pyextremes
attribute	NC_GLOBAL	source	String	Python, pyextremes library
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	summary	String	Extreme Value Analysis output. twl_extremes. +ATLANTIC_CoLAB data from a local source.
attribute	NC_GLOBAL	title	String	Extreme Value Analysis output (twl_extremes)
variable	return_value		double
attribute	return_value	_FillValue	double	NaN
attribute	return_value	actual_range	double	1.9673793285334378, 11.285275968465076
attribute	return_value	comment	String	Return value estimated from fitted distribution per return period.
attribute	return_value	coordinates	String	id latitude longitude
attribute	return_value	ioos_category	String	Unknown
attribute	return_value	long_name	String	Return value
attribute	return_value	observation_type	String	modeled
attribute	return_value	processing_method	String	Extreme Value Analysis (GEV via pyextremes)
attribute	return_value	units	String	m
variable	return_value_observed		double
attribute	return_value_observed	ioos_category	String	Unknown
variable	lower_ci		double
attribute	lower_ci	_FillValue	double	NaN
attribute	lower_ci	actual_range	double	1.9204067797241047, 10.444244480748086
attribute	lower_ci	colorBarMaximum	double	50.0
attribute	lower_ci	colorBarMinimum	double	0.0
attribute	lower_ci	comment	String	Lower bound of return value confidence interval.
attribute	lower_ci	coordinates	String	id latitude longitude
attribute	lower_ci	ioos_category	String	Statistics
attribute	lower_ci	long_name	String	Lower confidence interval
attribute	lower_ci	observation_type	String	modeled
attribute	lower_ci	units	String	m
variable	upper_ci		double
attribute	upper_ci	_FillValue	double	NaN
attribute	upper_ci	actual_range	double	2.0572653927795126, 11.943585133440966
attribute	upper_ci	colorBarMaximum	double	50.0
attribute	upper_ci	colorBarMinimum	double	0.0
attribute	upper_ci	comment	String	Upper bound of return value confidence interval.
attribute	upper_ci	coordinates	String	id latitude longitude
attribute	upper_ci	ioos_category	String	Statistics
attribute	upper_ci	long_name	String	Upper confidence interval
attribute	upper_ci	observation_type	String	modeled
attribute	upper_ci	units	String	m
variable	return_period		double
attribute	return_period	_FillValue	double	NaN
attribute	return_period	actual_range	double	1.0, 100.0
attribute	return_period	ioos_category	String	Unknown
attribute	return_period	long_name	String	Return Period
attribute	return_period	units	String	1
variable	return_period_observed		double
attribute	return_period_observed	ioos_category	String	Unknown
attribute	return_period_observed	long_name	String	Return Period Observed
variable	id		String
attribute	id	comment	String	Unique identifier for each location
attribute	id	ioos_category	String	Identifier
attribute	id	long_name	String	Id

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.