div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Natural Gas Altitude De-Rate Factor Benchmark 7501000 aercocomsitesdefaultfilesdocumentdocumentC302-4-BMK750 · Altitude Correction Factor ACF Derating For Altitude src=https:reader031vdocumentsusreader031viewer20220218175a9d26e77f8b9a032a8bf389html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv