diff --git a/content/post/automating-your-hose.md b/content/post/automating-your-hose.md
index b28e9e9..eb46249 100644
--- a/content/post/automating-your-hose.md
+++ b/content/post/automating-your-hose.md
@@ -360,10 +360,10 @@ sensor:
         value_template: >-
           {% if states.sensor.tfh_precipitation_stats_mean.attributes.max_value <= 0.1 %}
           0.0
-          {% elif states.sensor.tfh_precipitation_stats_mean.attributes.max_value < 4.0 %}
-          <4.0
-          {% elif states.sensor.tfh_precipitation_stats_mean.attributes.max_value >= 4.0 %}
-          >4.0
+          {% elif states.sensor.tfh_precipitation_stats_mean.attributes.max_value < 0.5 %}
+          <0.5
+          {% elif states.sensor.tfh_precipitation_stats_mean.attributes.max_value >= 0.5 %}
+          >0.5
           {% endif %}
       48h_precipitation_history:
         friendly_name: "48h precipitation history"
@@ -372,10 +372,10 @@ sensor:
         value_template: >-
           {% if states.sensor.feh_precipitation_stats_mean.attributes.max_value <= 0.1 %}
           0.0
-          {% elif states.sensor.feh_precipitation_stats_mean.attributes.max_value < 4.0 %}
-          <4.0
-          {% elif states.sensor.feh_precipitation_stats_mean.attributes.max_value >= 4.0 %}
-          >4.0
+          {% elif states.sensor.feh_precipitation_stats_mean.attributes.max_value < 0.5 %}
+          <0.5
+          {% elif states.sensor.feh_precipitation_stats_mean.attributes.max_value >= 0.5 %}
+          >0.5
           {% endif %}
 ```
 
@@ -388,12 +388,12 @@ sensor:
 # Hose control structures
 #
 # Basic idea:
-#  If it rained <4.0mm in the last 48h, run for 1h
-#  If it rained >4.0mm in the last 48h, but 0.0mm in the last 24h, run for 30m
-#  If it rained <4.0mm in the last 24h, run for 15m
-#  If it rained >4.0mm in the last 24h, don't run tonight
+#  If it rained <0.5mm in the last 48h, run for 1h
+#  If it rained >0.5mm in the last 48h, but 0.0mm in the last 24h, run for 30m
+#  If it rained <0.5mm in the last 24h, run for 15m
+#  If it rained >0.5mm in the last 24h, don't run tonight
 
-# Turn on the hose at 02:00 if there's been <4.0mm of rain in the last 24h
+# Turn on the hose at 02:00 if there's been <0.5mm of rain in the last 24h
 - alias: 'Hose - 02:00 Timer - turn on'
   trigger:
     platform: time
@@ -403,7 +403,7 @@ sensor:
     conditions:
       - condition: state
         entity_id: sensor.24h_precipitation_history
-        state: '<4.0'
+        state: '<0.5'
       - condition: state
         entity_id: sensor.24h_precipitation_history
         state: '0.0'
@@ -411,8 +411,8 @@ sensor:
     service: homeassistant.turn_on
     entity_id: switch.hose_a
 
-# Turn off the hose at 02:15 if there's been <4.0mm but >0.0mm of rain in the last 24h
-- alias: 'Hose - 02:15 Timer - turn off (<4.0mm/24h)'
+# Turn off the hose at 02:15 if there's been <0.5mm but >0.0mm of rain in the last 24h
+- alias: 'Hose - 02:15 Timer - turn off (<0.5mm/24h)'
   trigger:
     platform: time
     at: '02:15:00'
@@ -424,13 +424,13 @@ sensor:
         state: 'on'
       - condition: state
         entity_id: sensor.24h_precipitation_history
-        state: '<4.0'
+        state: '<0.5'
   action:
     service: homeassistant.turn_off
     entity_id: switch.hose_a
 
-# Turn off the hose at 02:30 if there's been >4.0mm in the last 48h but 0.0 in the last 24h
-- alias: 'Hose - 02:30 Timer - turn off (>4.0mm/48h + 0.0mm/24h)'
+# Turn off the hose at 02:30 if there's been >0.5mm in the last 48h but 0.0 in the last 24h
+- alias: 'Hose - 02:30 Timer - turn off (>0.5mm/48h + 0.0mm/24h)'
   trigger:
     platform: time
     at: '02:30:00'
@@ -445,7 +445,7 @@ sensor:
         state: '0.0'
       - condition: state
         entity_id: sensor.48h_precipitation_history
-        state: '>4.0'
+        state: '>0.5'
   action:
     service: homeassistant.turn_off
     entity_id: switch.hose_a
@@ -469,3 +469,7 @@ Tada! Automated watering based on the rainfall!
 ### Conclusion
 
 This was a fun little staycation project that I'm certain has great expandability. Next year once the garden is arranged I'll probably start work on a larger, multi-zone version to better support the huge garden. But for today I love knowing that my hose will turn itself on and water the garden every night if it needs it, no involvement from me! I hope you find this useful to you, and of course, I'm open to suggestions for improvement or questions - just send me an email!
+
+### Errata
+
+*2018-10-03*: I realized that 4.0mm of rain as an automation value was quite high. Even over a few days of light rain, it never reported above 1.0mm at any single ~2h interval, let alone 4.0mm. So 0.5mm seems like a much nicer value than 4.0mm for the "it's just lightly showered"/"it's actually rained" distinction I was going for. The code and descriptions above have been updated. One could also modify the templates to add up the 24h/48h total and base the condition off the total, which is a little more clunky but would be more accurate if that matters in your usecase.