Basing on the population figures and deaths between 1980 to 1994, we calculated mortality tables for the Grman province (or "Free State", as 1st is called) of Saxony. The method for calculating the period mortality tables according to Becker, Zeuner based on the year of dying, was modified for small parent populations (correction of baby mortality according to Rahts, smoothing algorithm). The influence exercised by baby mortality and migration on life expectancy is shown. Estimated errors of the model are calculated for the first time (maximum absolute deviation for eo scatter, 95% confidence interval for eo). Presentation of different lifespan data proves that the positive trend of the life prolongation process is continuing. For example, the life expectancy of male newborn increased during the observation period by 1.94 years (from 69.38 to 71.31 years), that of female newborn by 3.50 years (from 75.2 to 78.62). Women increased their lead in life expectancy against men by 1.56 years (from 5.75 to 7.31 years). The reduction in baby morality and in the standardised mortality rate are other favourable factors. These figures dropped during the observation period from M: 12.0 on 7.0 and from F: 8.9 on 4.8, respectively from M: 14.4 on 1.0 and F: 13.3 on 12.7 per 1000 of the population.