diff --git a/src/AgValue.cpp b/src/AgValue.cpp
index aa21145..639ab53 100644
--- a/src/AgValue.cpp
+++ b/src/AgValue.cpp
@@ -659,7 +659,8 @@ JSONVar Measurements::buildPMS(AirGradient &ag, int ch, bool allCh, bool withTem
     return pms;
   };
 
-  /** Handle both channel with average, if one of the channel not valid, use another one */
+  /** Handle both channels by averaging their values; if one channel's value is not valid, skip
+   * averaging and use the valid value from the other channel */
 
   /// PM1.0 atmospheric environment
   if (utils::isValidPm(_pm_01[0].update.avg) && utils::isValidPm(_pm_01[1].update.avg)) {
diff --git a/src/PMS/PMS5003.cpp b/src/PMS/PMS5003.cpp
index 1605375..5b8cdfd 100644
--- a/src/PMS/PMS5003.cpp
+++ b/src/PMS/PMS5003.cpp
@@ -79,49 +79,49 @@ bool PMS5003::begin(void) {
 }
 
 /**
- * @brief Read PM1.0 must call this function after @ref readData success
+ * @brief Read PM1.0
  *
  * @return int PM1.0 index (atmospheric environment)
  */
 int PMS5003::getPm01Ae(void) { return pms.getPM0_1(); }
 
 /**
- * @brief Read PM2.5 must call this function after @ref readData success
+ * @brief Read PM2.5
  *
  * @return int PM2.5 index (atmospheric environment)
  */
 int PMS5003::getPm25Ae(void) { return pms.getPM2_5(); }
 
 /**
- * @brief Read PM10.0 must call this function after @ref readData success
+ * @brief Read PM10.0
  *
  * @return int PM10.0 index (atmospheric environment)
  */
 int PMS5003::getPm10Ae(void) { return pms.getPM10(); }
 
 /**
- * @brief Read PM1.0 must call this function after @ref readData success
+ * @brief Read PM1.0
  *
  * @return int PM1.0 index (standard particle)
  */
 int PMS5003::getPm01Sp(void) { return pms.getRaw0_1(); }
 
 /**
- * @brief Read PM2.5 must call this function after @ref readData success
+ * @brief Read PM2.5
  *
  * @return int PM2.5 index (standard particle)
  */
 int PMS5003::getPm25Sp(void) { return pms.getRaw2_5(); }
 
 /**
- * @brief Read PM10 must call this function after @ref readData success
+ * @brief Read PM10
  *
  * @return int PM10 index (standard particle)
  */
 int PMS5003::getPm10Sp(void) { return pms.getRaw10(); }
 
 /**
- * @brief Read particle 0.3 count must call this function after @ref readData success
+ * @brief Read particle 0.3 count
  *
  * @return int PM0.3 index
  */
@@ -130,21 +130,21 @@ int PMS5003::getPm03ParticleCount(void) {
 }
 
 /**
- * @brief Read particle 1.0 count must call this function after @ref readData success
+ * @brief Read particle 1.0 count
  *
  * @return int particle 1.0 count index
  */
 int PMS5003::getPm01ParticleCount(void) { return pms.getCount1_0(); }
 
 /**
- * @brief Read particle 2.5 count must call this function after @ref readData success
+ * @brief Read particle 2.5 count
  *
  * @return int particle 2.5 count index
  */
 int PMS5003::getPm25ParticleCount(void) { return pms.getCount2_5(); }
 
 /**
- * @brief Read particle 10 count must call this function after @ref readData success
+ * @brief Read particle 10 count
  *
  * @return int particle 10 count index
  */
diff --git a/src/PMS/PMS5003T.cpp b/src/PMS/PMS5003T.cpp
index 494bf2f..e43ea91 100644
--- a/src/PMS/PMS5003T.cpp
+++ b/src/PMS/PMS5003T.cpp
@@ -108,49 +108,49 @@ bool PMS5003T::begin(void) {
 }
 
 /**
- * @brief Read PM1.0 must call this function after @ref readData success
+ * @brief Read PM1.0
  *
  * @return int PM1.0 index (atmospheric environment)
  */
 int PMS5003T::getPm01Ae(void) { return pms.getPM0_1(); }
 
 /**
- * @brief Read PM2.5 must call this function after @ref readData success
+ * @brief Read PM2.5
  *
  * @return int PM2.5 index (atmospheric environment)
  */
 int PMS5003T::getPm25Ae(void) { return pms.getPM2_5(); }
 
 /**
- * @brief Read PM10.0 must call this function after @ref readData success
+ * @brief Read PM10.0
  *
  * @return int PM10.0 index (atmospheric environment)
  */
 int PMS5003T::getPm10Ae(void) { return pms.getPM10(); }
 
 /**
- * @brief Read PM1.0 must call this function after @ref readData success
+ * @brief Read PM1.0
  *
  * @return int PM1.0 index (standard particle)
  */
 int PMS5003T::getPm01Sp(void) { return pms.getRaw0_1(); }
 
 /**
- * @brief Read PM2.5 must call this function after @ref readData success
+ * @brief Read PM2.5
  *
  * @return int PM2.5 index (standard particle)
  */
 int PMS5003T::getPm25Sp(void) { return pms.getRaw2_5(); }
 
 /**
- * @brief Read PM10 must call this function after @ref readData success
+ * @brief Read PM10
  *
  * @return int PM10 index (standard particle)
  */
 int PMS5003T::getPm10Sp(void) { return pms.getRaw10(); }
 
 /**
- * @brief Read particle 0.3 count must call this function after @ref readData success
+ * @brief Read particle 0.3 count
  *
  * @return int particle 0.3 count index
  */
@@ -159,14 +159,14 @@ int PMS5003T::getPm03ParticleCount(void) {
 }
 
 /**
- * @brief Read particle 1.0 count must call this function after @ref readData success
+ * @brief Read particle 1.0 count
  *
  * @return int particle 1.0 count index
  */
 int PMS5003T::getPm01ParticleCount(void) { return pms.getCount1_0(); }
 
 /**
- * @brief Read particle 2.5 count must call this function after @ref readData success
+ * @brief Read particle 2.5 count
  *
  * @return int particle 2.5 count index
  */