export interface CosmicExpansionSurvey {
    h0: number;
    omegaLambda0?: number;
    omegaM0?: number;
    zEq: number;
    sigma8?: number;
    omega0: number;
    temperature0: number;
    age?: number;
}
/**
 * Parameters from the Planck 2018 survey with baryon acoustic oscillations
 * (BAO) data.
 *
 * Planck 2018: https://arxiv.org/abs/1807.06209
 */
export declare const planck2018Bao: CosmicExpansionSurvey;
/**
 * Parameters from the Planck 2018 survey.
 *
 * Planck 2018: https://arxiv.org/abs/1807.06209
 */
export declare const planck2018: CosmicExpansionSurvey;
/**
 * Parameters from the Planck 2015 survey - unverified.
 *
 * @todo Verify Planck 2015 parameters.
 */
export declare const planck2015: CosmicExpansionSurvey;
/**
 * Parameters from the WMAP 2013 survey - unverified.
 *
 * @todo Verify WMAP 2013 parameters.
 */
export declare const wmap2013: CosmicExpansionSurvey;
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