Before revision:  We find that the median value of tenure is 4517 reais for federal government employees, 2560 reais for state government employees, and 672 reais for municipal government employees .
After revision:  We find that the median value of tenure was 3980 reais to the median federal government employee, 1971 reais to the median state government employee, and 500 reais to the median municipal government employee .