diff --git a/DESCRIPTION b/DESCRIPTION
index 79ee26e..786c7bf 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,10 +2,10 @@ Package: APSIM
 Type: Package
 Title: General Utility Functions for the 'Agricultural Production Systems
     Simulator'
-Version: 0.9.2
-Date: 2017-07-24
+Version: 0.9.4
+Date: 2019-05-22
 Author: Justin Fainges
-Maintainer: Justin Fainges <Justin.Fainges@csiro.au>
+Maintainer: Dean Holzworth <Dean.Holzworth@csiro.au>
 LazyData: true
 Description: Contains functions designed to facilitate the loading
     and transformation of 'Agricultural Production Systems Simulator'
diff --git a/R/MetFunctions.R b/R/MetFunctions.R
index eadb8fb..a284629 100644
--- a/R/MetFunctions.R
+++ b/R/MetFunctions.R
@@ -268,8 +268,8 @@ insertTavAmp <- function(met){
     data$meanDayT <- (data$maxt + data$mint) / 2
     mmt <- plyr::ddply(data, "month", function(df) mean(df$meanDayT))
     if (nrow(mmt) != 12) print("WARNING: At least 12 months of data is required to generate tav and amp. Values may be inaccurate.")
-    met@tav <- max(mmt$V1) - min(mmt$V1)
-    met@amp <- mean(mmt$V1)
+    met@amp <- max(mmt$V1) - min(mmt$V1)
+    met@tav <- mean(mmt$V1)
     return(met)
 }
 
diff --git a/README.md b/README.md
index 7ab32e8..86ca4da 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,14 @@ A package containing general purpose utility functions for loading and manipulat
 Release Notes
 =============
 
+### 0.9.4
+
+-
+
+### 0.9.3
+
+-   TAV and AMP calculations have been incorrect (swapped)
+
 ### 0.9.2
 
 -   loadApsim has new option: skipEmpty, which will skip output files with no data.