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Type Value Description (Underlying Data and Metadata) <br />PGAuh See underlying data for Site <br />Classes C, CD, and D <br />Probabilistic uniform-hazard (2%-in-50-years), geometric-mean peak ground acceleration, in units <br />of g. <br />PGA84th See underlying data for Site <br />Classes C, CD, and D <br />Deterministic 84th-percentile, geometric-mean peak ground acceleration (without deterministic <br />lower limit), in units of g. <br />VS30 260 The shear-wave velocity used for the user-specified Site Class, in units of m/s <br />Spatial Interpolation <br />Method linearloglinear Identifier for spatial interpolation method used to obtain values for location of interest from <br />underlying gridded values: "linearloglinear" for bilinear of natural logarithm of values. <br />PGAdFloor <br />Deterministic lower limit peak ground acceleration (PGAG) for the user-specified Site Class, in <br />units of g. <br />riskTargetedSpectrum Probabilistic risk-targeted, maximum direction response spectrum (for 1%-in-50-years collapse <br />risk) <br />eightyFourthSpectrum Deterministic 84th-percentile, maximum-direction response spectrum (without deterministic lower <br />limit)