004.03 The PTA's Opinion will state whether the county's level of value and quality of assessment are acceptable or not acceptable based on a consideration of all of the information available. The PTA will take into consideration in the formulation of his or her opinion the information regarding the assessment practices in the county in addition to the results indicated from the statistical reports calculated from the sales file and the quantity, quality, and reliability of the statistics from the county's data set including the dispersion and representativeness of sales in the database. Neb. Rev. Stat. §§ 77-702, 77-1327, 77-1343, 77-1344, 77-1377, 77-1514, and 77-5027.