Adjust the following station's pressure readings to sea level. A. Mt. Pleasnt, MI- Elevation= 270m, pressure= 978.0 mb B. Chicago, IL- Elevation= 176m, pressure= 981.0 mb C. Bozeman, MT- Elevation= 1468m, pressure= 835.0 mb

Note:hand written solution should be avoided.

The distance L₁ (cm) along the stem of the 151H hydrometer from the top of the bulb to the mark for a reading R is 10.5 cm for a reading of 1.000 and 2.3 cm for a reading of 1.031. Derive an expression for the effective depth L (cm) in terms of R with reference to the ASTM D422-63 standard.