Adapt Ingo ESy to have it run on the ESy-master script from Florian
In the Ingo-Esy-Wasserstufen_nach_Gruppen.txt the Wasserstufen 6+, 5+, 4+, 3+, 2+, 2- are defined by the Groups 1 - 101 based on K4Tab11ÖKCH.XLS
There is a typo somewhere in Section 3 I guess.