Robust earthquake early warning at a fraction of the cost: ASTUTI Costa Rica - Brooks, Benjamin; Protti, Marino; Ericksen, Todd; Bunn, Julian; Vega, Floribeth; Cochran, Elizabeth; Duncan, Chris; Avery, Jonathan; Minson, Sarah; Chaves, Esteban; Baez, Juan Carlos; Foster, James; et al. (AGU Advances, 2021)