Estimation of  the Swedish time correction factor LYS  using the formula

LYS1=0.2421*(LÖA^0.3691)*(B^0.0801)*(DEPL^-0.1562)*(SA^0.2066)

where SA is estimated as SA=(P*E+T*LP)/2. All units in meters and tons.

This formula estimates LYS for the boats in the table over the Lidingö yardstick from ESYS  (descriptions of the parameters ) which have nonzero values for the parameters LÖA, B, DEPL, P, E, T, LP, SL and SMW and have LYS > 0.80, with an error:

            less than 0.030 for 68% of the boats,
            less than 0.045 for 88% of the boats and
            less than 0.060 for 95% of the boats.