It’s matlab tiny fraction of atmospheric pressure, though which is ready 101,325 Pa. Your heating demand sounds about right, but is frequently matlab very worst case, when matlab programming home is unoccupied and has everything turned off, with zero solar gain. In reality I find that we never need much heating at all, and positively not up to matlab programming spreadsheet indicates. The reason is down to there being two of us in matlab programming house jointly contributing about 150 to 200 W, matlab programming base load from electrical home equipment in matlab programming house that add an alternative 200 W or so, plus matlab bit of solar gain, matlab programming heat released to matlab programming house from showers, baths and cooking, etc. It’s not hard for matlab programming incidental gains to supply all matlab programming heating needed for much of matlab programming year, and to contribute to overheating when there is matlab bit of solar gain. Our house is also cut into matlab hillside, near matlab programming bottom of matlab valley, so has matlab surrounding microclimate that seems matlab good bit warmer than matlab programming Met Office temperature data I used for this area.