excellent quality Bathing water reported as temporarily closed (Closed is “YT”) and not monitored or monitored but neither of other Class values are relevant. closed good quality sufficient quality poor quality frequency criteria (first sample shortly before the start of the season, sampling intervals - one month during the bathing season) and number of samples in the assessment period not satisfied not enough samples new bathing water identified with necessary dataset not compiled yet (when the classification of bathing waters according to the Annex II of the Directive has already started) new (classification not yet possible) Bathing water with necessary dataset not available yet since the occurrence of changes that affect or likely to affect classification of bathing water (water quality is influenced). It could be closed bathing water but closure itself does not always mean changes that affect classification. changes (classification not yet possible) no changes changes Bathing water is newly identified or changes occur that affect classification in the current season. Such bathing water is assessed if the number of samples is sufficient. current season In the preceding season bathing water was newly identified or changes affected classification. Bathing water is assessed if the number of samples is sufficient. current season and preceding bathing seasons Two years ago bathing water was newly identified or changes affected classification. Bathing water is assessed if the number of samples is sufficient. current season and two preceding bathing seasons Assessment for all bathing waters is done on the basis of 4-year data set. If not enough samples were collected during 4-year period or samples are not more or less equally distributed throughout the season, the bathing water gets status "not enough samples" (Class gets value “5”). For newly identified bathing waters or bathing waters where changes affected classification number of seasons can be lower. current season and three preceding bathing seasons