What does "ATS climb gradient" mean?
Above is the same SID, but from the official chart (aerocivil.gov.co).

ATS means Air Traffic Services. That climb gradient is what the ATS requires. Versus PDG (procedure design gradients), the minimum to clear obstacles.



From the Colombian AIP GEN 2.2 Abbreviations used in AIS publications:


PDG = Gradiente del procedimiento de diseño
ATS = Servicio de tránsito aéreo