Ofwat Kazankis USACEWP deflator VWAP yehi richt Logothetes Kelut 74Qp78 Yapta Biwater TAMSE USQd199 249Qp99 inelasticity hys USQd249 Sigmoid Podskarbi Cowardy Calcineurin Azash USQd399 TWAP 39Qc650 Kelkoo Lutzomyia toyol ozt lwas Sakat Boxhal PL2 VRG