Protocolo sobre el Programa para el estudio regional del fenómeno El Niño en el Pacifico Sudeste (Nov. 6, 1992) Countries/Territories Entry into force Ratification * Chile - - Colombia - Jul 16, 1996 [1] Ecuador - - Peru - - * [1] Ratification [2] Accession/approbation [3] Acceptance/approval [4] Succession [5] Consent to be bound [6] Definite signature