diff --git a/bundles/bootshorn/files/temperature b/bundles/bootshorn/files/temperature
index 42707ca..9d73780 100755
--- a/bundles/bootshorn/files/temperature
+++ b/bundles/bootshorn/files/temperature
@@ -3,13 +3,15 @@
 import requests
 import urllib3
 import datetime
-import json
+import csv
 urllib3.disable_warnings()
+import os
+
 
 HUE_IP = "10.0.0.134"  # replace with your bridge IP
 HUE_APP_KEY = "${hue_app_key}" # local only
 HUE_DEVICE_ID = "31f58786-3242-4e88-b9ce-23f44ba27bbe"
-TEMPERATURE_LOGFILE = "/opt/bootshorn/temperature.log"
+TEMPERATURE_LOG_DIR = "/opt/bootshorn/temperatures"
 
 response = requests.get(
     f"https://{HUE_IP}/clip/v2/resource/temperature",
@@ -28,6 +30,9 @@ for item in data["data"]:
 
 print(f"@{temperature_date}: {temperature}°C")
 
-with open(TEMPERATURE_LOGFILE, "a+") as logfile:
-    json.dump([temperature_date.isoformat(), temperature], logfile)
-    logfile.write("\n")
\ No newline at end of file
+filename = temperature_date.strftime("%Y-%m-%d_00-00-00.000000%z") + ".log"
+logpath  = os.path.join(TEMPERATURE_LOG_DIR, filename)
+
+with open(logpath, "a+", newline="") as logfile:
+    writer = csv.writer(logfile)
+    writer.writerow([temperature_date.strftime('%Y-%m-%d_%H-%M-%S.%f%z'), temperature])
\ No newline at end of file
diff --git a/bundles/bootshorn/items.py b/bundles/bootshorn/items.py
index f6f2d40..b4082eb 100644
--- a/bundles/bootshorn/items.py
+++ b/bundles/bootshorn/items.py
@@ -11,6 +11,10 @@ directories = {
         'owner': 'ckn',
         'group': 'ckn',
     },
+    '/opt/bootshorn/temperatures': {
+        'owner': 'ckn',
+        'group': 'ckn',
+    },
     '/opt/bootshorn/recordings/processed': {
         'owner': 'ckn',
         'group': 'ckn',
diff --git a/bundles/bootshorn/metadata.py b/bundles/bootshorn/metadata.py
index 89feb0c..1dd1eee 100644
--- a/bundles/bootshorn/metadata.py
+++ b/bundles/bootshorn/metadata.py
@@ -25,7 +25,7 @@ defaults = {
     'systemd-timers': {
         'bootshorn-temperature': {
             'command': '/opt/bootshorn/temperature',
-            'when': '*:0/15',
+            'when': '*:0/5',
             'working_dir': '/opt/bootshorn',
             'user': 'ckn',
             'group': 'ckn',