-update chart set pos_ustva='511' where pos_ustva='51r';
-update chart set pos_ustva='861' where pos_ustva='86r';
-update chart set pos_ustva='971' where pos_ustva='97r';
-update chart set pos_ustva='931' where pos_ustva='93r';
+-- update chart set pos_ustva='511' where pos_ustva='51r';
+-- update chart set pos_ustva='861' where pos_ustva='86r';
+-- update chart set pos_ustva='971' where pos_ustva='97r';
+-- update chart set pos_ustva='931' where pos_ustva='93r';