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You could use those values and filter out data beyond them. You probably won't see data below 0.35m, but you will definitely see data > 1.4m. With the 1.09 I've seen points out to ~6m, HOWEVER, note that the onboard calibration is really only valid for points in the 0.35-1.4m range, beyond that, the points become quite noisy and probably should not be used for anything like costmaps/octomaps.