The Hiring Promoted By The Consortci Besòs Tordera (Hereinafter Cbt) To Execute The A10 Action: Calibration And Verification Analytics Of Quality Sensors And Stations Within The Framework Of The Paitida Project: Integral Digitalization Of The Sanitation Systems Of The Integral Water Cycle Of The Besós River Basin To Ensure The Quality And Availability Of The Resource In Its Supply To The Public. - Within The Recovery, Transformation And Resilience Plan Financed By The European Union (Belonging To The Water Cycle) - Next Generation Eu.