--- a/bmsd/bms.h	Sat Jan 14 11:25:20 2023 +0100
+++ b/bmsd/bms.h	Sat Feb 11 15:53:16 2023 +0100
@@ -310,7 +310,9 @@
 } brewer_list;
 
 
-// Make it universal and make it connectable with a beer.
+/**
+ * @brief Structure for the iSpindels. Stored in database table 'mon_ispindels'.
+ */
 typedef struct _ispindel_list {
     struct _ispindel_list	*next;
     char			*uuid;			///< Fixed uuid string.
@@ -328,6 +330,8 @@
     float			gravity;		///< Gravity in Plato
     int				interval;		///< Measure interval
     float			og_gravity;		///< OG gravity in Plato detected
+    float			yeast_lo;		///< Yeast low temperature limit
+    float			yeast_hi;		///< Yeast high temperature limit
 } sys_ispindel_list;