diff --git a/app/Services/DeviceLogService.php b/app/Services/DeviceLogService.php
index f5dfe3a..e3c35d2 100644
--- a/app/Services/DeviceLogService.php
+++ b/app/Services/DeviceLogService.php
@@ -448,6 +448,10 @@ class DeviceLogService
                 switch ($key) {
                     case 'wind_samples':
                         $attributes['wind_degree'] = value(function (array $windSamples) {
+                            if (empty($windSamples)) {
+                                return null;
+                            }
+
                             $x = 0;
                             $y = 0;
 
@@ -477,6 +481,10 @@ class DeviceLogService
                         }, $item);
 
                         $attributes['wind_direction'] = value(function ($windDegree) {
+                            if (is_null($windDegree)) {
+                                return null;
+                            }
+
                             if ($windDegree >= 22.5 && $windDegree < 67.5) {
                                 return MeteorologicalDailyReport::WIND_DIRECTION_NORTHEAST;
                             } elseif ($windDegree >= 67.5 && $windDegree < 112.5) {