Electronic Supplement to
Performance Evaluation of the Earthquake Detection and Classification Algorithm 2(t_S–t_P) of the Seismic Alert System of Mexico (SASMEX)

by Armando Cuéllar, Gerardo Suárez, and J. M. Espinosa-Aranda

Table S4. Performance Evaluation of the 2(t_S–t_P) Algorithm for the 27 February 2010 M_w 8.8 Maule, Chile, Earthquake

Strong-Motion Stations in Chile				Performance of SASMEX Algorithm 2(tS–tP)
Name of FS	Station Name	Latitude (°)	Longitude (°)	Epicentral Distance (km)	tS–tP (s)	a	m	Estimated m2(tS–tP)
CONT	Constitución, Hospital	−35.34	−72.406	78	12.72*	8.50	5.67	>6.0
CONC	Concepción, Colegio Inmaculada Concepción	−36.828	−73.048	108	6.11*	7.86	5.34	>6.0
TAL	Talca, Colegio Integrado San Pío X	−35.43	−71.665	133	18.95*	8.41	4.81	>6.0
HUAL	Hualañe, Hospital	−34.977	−71.805	146	21.71*	8.52	4.94	>6.0
CURI	Curico, Hospital	−34.99	−71.236	194	26.84	8.51	4.65	>6.0
ANGO	Angol, Hospital	−37.795	−72.706	201	21.37	8.85	4.51	>6.0
MAT	Matanzas, Escuela Carlos Ibáñez del Campo	−33.96	−71.873	228	24.40*	8.48	4.87	>6.0
LLO	Llolleo	−33.616	−71.611	273	22.54*	8.46	5.73	>6.0

SASMEX, Seismic Alert System of Mexico; FS, field sensor.

*Accelerograms without P-wave arrivals.

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