they all get null when cellNR.signalNR parameters are nullable!!
"""
cellNR.signalNR.csiRsrp = cell.signal.csiRsrp?:0
cellData.csiRsrp = cell.signal.csiRsrp?:0
cellNR.signalNR.csiRsrpAsu = cell.signal.csiRsrpAsu?:0
cellData.csiRsrpAsu = cell.signal.csiRsrpAsu?:0
cellNR.signalNR.csiRsrq = cell.signal.csiRsrq?:0
cellData.csiRsrq = cell.signal.csiRsrq?:0
"""
"""
cellNR.signalNR.csiRsrp = cell.signal.csiRsrp?:0
cellData.csiRsrp = cell.signal.csiRsrp?:0
"""