From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Data table showing barometric pressure and temperature measurements at various altitudes from 8000 to 10000 feet.
| Identifier | ExFiles\Box 149\1\ scan0172 | |
| Date | 8th August 1935 | |
| -2- HS{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring}9/KW.8.8.35. Altitude | Barometric Pressure | Temperature Feet | Mercury | °C | °F | m/metres. | Ins. | lbs/sq" | | 8000 | 564 | 22.22 | 10.92 | -.8 | 30.6 8500 | 554 | 21.80 | 10.71 | -1.8 | 28.8 9000 | 543 | 21.39 | 10.50 | -2.8 | 27.0 9500 | 533 | 20.98 | 10.30 | -3.8 | 25.2 10000 | 522 | 20.58 | 10.10 | -4.8 | 23.4 HS{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring} | ||