Say that batch was receive

main/station_example_main.c

@@ -192,7 +192,7 @@ static void measure_task(void *arg)
             count = 0;
         }
 
-        int jitter = (rand() % 10) - 5; // ±2 ms random
+        int jitter = rand() % 41;  // 0..40 ms
         vTaskDelayUntil(&last_wake,
                         pdMS_TO_TICKS(SAMPLE_PERIOD_MS + jitter));
     }