Net Rate : The total rate of water discharge density, less water wastage due to factors such as wind effects and inaccuracies in nozzle angles of spray.
NFPA 15 Standard for Water Spray Fixed Systems For Fire Protection, 2001 ed. https://law.resource.org/pub/us/cfr/ibr/004/nfpa.2 5.2002.pdf, (Std: Wtr Spray Fixed Sys for Fr Prac - Amer) {183 NFC}