Index: firmware/App/Services/MessagePayloads.h
===================================================================
diff -u -ra0504d43ac65e7c97adfb92004b45d72d61be5e4 -rf308cc4c35eab630ebbbde405cfe47d049afeafb
--- firmware/App/Services/MessagePayloads.h	(.../MessagePayloads.h)	(revision a0504d43ac65e7c97adfb92004b45d72d61be5e4)
+++ firmware/App/Services/MessagePayloads.h	(.../MessagePayloads.h)	(revision f308cc4c35eab630ebbbde405cfe47d049afeafb)
@@ -81,6 +81,12 @@
 
 typedef struct
 {
+    F32 cpi;
+    F32 cpo;
+} CONDUCTIVITY_DATA_T;
+
+typedef struct
+{
     U32 activeReservoir;
     U32 fillToVolumeMl;
     U32 drainToVolumeMl;