--- a/main/config.c	Mon Nov 04 19:35:05 2019 +0100
+++ b/main/config.c	Tue Nov 05 11:31:59 2019 +0100
@@ -98,6 +98,8 @@
         size_t bytes = fread(dst, 1, sizeof(units), f);
         fclose(f);
         ESP_LOGI(TAG, "/spiffs/etc/units.conf read %d bytes", bytes);
+	for (int i = 0; i < 3; i++)
+	   ESP_LOGI(TAG, "%d %s %d %4d %3d", i, units[i].alias, units[i].pressure_channel, units[i].pressure_voltage, units[i].pressure_zero);
     }
 }