SURVEY BY LEVELS WASHINGTON STATE. 1  Salary data are based on poll entries. 2  Salary data are based on poll entries. 3  Salary data are based on poll entries. 4  Salary data are based on poll entries. 5  Salary data are based on poll entries. 6  Salary data are based on poll entries. 7  Salary data are based on poll entries. 8  Salary data are based on poll entries.