1.Member States conducting sample surveys in order to obtain statistics shall take all necessary steps to ensure that Table 1 data meet the following precision requirements: the coefficient of variation of the data to be provided by 30 September of the year n + 1 shall not exceed, at national level, 3 % for the area under cultivation for each of the following groups of main crops: cereals for the production of grain (including seed), dried pulses and protein crops for the production of grain (including seed and mixtures of cereals and pulses), root crops, industrial crops and plants harvested green.
2.A Member State which decides to use sources of statistical information other than statistical surveys shall ensure that information obtained from such sources is of at least equal quality to information obtained from statistical surveys.
3.A Member State which decides to use an administrative source shall inform the Commission in advance and shall provide details concerning the method to be used and the quality of the data from that administrative source.