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diff --git a/src/MQUnifiedsensor.cpp b/src/MQUnifiedsensor.cpp
index 041f1be..8c3d703 100644
--- a/src/MQUnifiedsensor.cpp
+++ b/src/MQUnifiedsensor.cpp
@@ -105,6 +105,7 @@ void MQUnifiedsensor::inicializar()
 float MQUnifiedsensor::readSensor(String nameLectureRequeired, bool print)
 {
   setSensorCharacteristics(nameLectureRequeired, print); //In this function update _a and _b
+  //More explained in: https://jayconsystems.com/blog/understanding-a-gas-sensor
   _RS_Calc = ((_VOLT_RESOLUTION*_RLValue)/_sensor_volt)-_RLValue; //Get value of RS in a gas
   _ratio = _RS_Calc / this->_R0;   // Get ratio RS_gas/RS_air
   _PPM= _a*pow(_ratio, _b);
@@ -137,15 +138,6 @@ void MQUnifiedsensor::setSensorCharacteristics(String nameLectureRequeired, bool
     nameLectureRequeired = _nameLectureRequeired;
   }
 
-  //Dinamic index search
-  /*
-  for (int i=0; i<sizeof(_MQ); i++) {
-      if (nameLectureRequeired == _MQ[i]) {    //modified here
-        _lecturePosInArray = i;
-        break;
-      }
-    }
-  */
   if(_type == 2)
     {
       if(nameLectureRequeired == "H2")
diff --git a/src/MQUnifiedsensor.h b/src/MQUnifiedsensor.h
index 9dd2705..eb820bf 100644
--- a/src/MQUnifiedsensor.h
+++ b/src/MQUnifiedsensor.h
@@ -5,9 +5,6 @@
 #include <stdint.h>
 
 
-//Count of posible lectures
-#define lecturesAvailable 19
-
 //Index in the nameLecture vector
 #define defaultMQ2 "LPG" // LPG
 #define defaultMQ3 "Alcohol" // Alcohol
@@ -64,23 +61,22 @@
 //Values consolidated 
 //Equation PPM = a*((x)^b)
 /********************** MQ2 ******************************************************/
-#define MQ2_H2_a -2.2459
-#define MQ2_H2_b 2.9845
+#define MQ2_H2_a 987.99
+#define MQ2_H2_b -2.162
  
-#define MQ2_LPG_a -2.2879
-#define MQ2_LPG_b 2.7901
+#define MQ2_LPG_a 574.25
+#define MQ2_LPG_b -2.222
 
-#define MQ2_CO_a -2.6208
-#define MQ2_CO_b 3.6075
+#define MQ2_CO_a 36974
+#define MQ2_CO_b -3.109
 
-#define MQ2_Alcohol_a -3.1157
-#define MQ2_Alcohol_b 4.5134
+#define MQ2_Alcohol_a 3616.1
+#define MQ2_Alcohol_b -2.675
+
+#define MQ2_Propane_a 658.71
+#define MQ2_Propane_b -2.168
 
-#define MQ2_Propane_a -2.7028
-#define MQ2_Propane_b 3.5595
 
-#define MQ2_Benzene_a -2.2879
-#define MQ2_Benzene_b 2.7901
 /********************** MQ3 ******************************************************/
 
 #define MQ3_LPG_a 44771
@@ -95,173 +91,160 @@
 #define MQ3_Alcohol_a 0.3934
 #define MQ3_Alcohol_b -1.504
 
-#define MQ3_Benzene_a 1.8006
-#define MQ3_Benzene_b -0.373
+#define MQ3_Benzene_a 4.8387
+#define MQ3_Benzene_b -2.68
 
-#define MQ3_Hexane_a 22.996
-#define MQ3_Hexane_b -0.351
+#define MQ3_Hexane_a 7585.3
+#define MQ3_Hexane_b -2.849
 /********************** MQ4 ******************************************************/
 
-#define MQ4_LPG_a -2.5818
-#define MQ4_LPG_b 3.6303
+#define MQ4_LPG_a 3811.9
+#define MQ4_LPG_b -3.113
 
-#define MQ4_CH4_a 0.9873
-#define MQ4_CH4_b 2.6386
+#define MQ4_CH4_a 1012.7
+#define MQ4_CH4_b -2.786
 
-#define MQ4_CO_a -5.5945
-#define MQ4_CO_b 5.6693
+#define MQ4_CO_a 200000000000000
+#define MQ4_CO_b -19.05
 
-#define MQ4_Alcohol_a -11.89
-#define MQ4_Alcohol_b 9.0375
+#define MQ4_Alcohol_a 60000000000
+#define MQ4_Alcohol_b -14.01
 
-#define MQ4_smoke_a -11.189
-#define MQ4_smoke_b 9.0375
+#define MQ4_smoke_a 30000000
+#define MQ4_smoke_b -8.308
 /********************** MQ5 ******************************************************/
 
-#define MQ5_H2_a -4.368
-#define MQ5_H2_b 2.9667
+#define MQ5_H2_a 1163.8
+#define MQ5_H2_b -3.874
 
-#define MQ5_LPG_a -2.5723
-#define MQ5_LPG_b 1.8943
+#define MQ5_LPG_a 80.897
+#define MQ5_LPG_b -2.431
 
-#define MQ5_CH4_a -2.4438
-#define MQ5_CH4_b 2.3044
+#define MQ5_CH4_a 177.65
+#define MQ5_CH4_b -2.56
 
-#define MQ5_CO_a -4.8188
-#define MQ5_CO_b 5.2023
-#define MQ5_Alcohol_a -4.419
-#define MQ5_Alcohol_b 4.8044
+#define MQ5_CO_a 491204
+#define MQ5_CO_b -5.826
+
+#define MQ5_Alcohol_a 97124
+#define MQ5_Alcohol_b -4.918
 /********************** MQ6 ******************************************************/
 
-#define MQ6_H2_a -3.6775
-#define MQ6_H2_b 5.0286
+#define MQ6_H2_a 88158
+#define MQ6_H2_b -3.597
 
-#define MQ6_LPG_a -1.6567
-#define MQ6_LPG_b 2.8775
+#define MQ6_LPG_a 1009.2
+#define MQ6_LPG_b -2.35
 
-#define MQ6_CH4_a -1
-#define MQ6_CH4_b 3.301
+#define MQ6_CH4_a 2127.2
+#define MQ6_CH4_b -2.526
 
-#define MQ6_CO_a -12.791
-#define MQ6_CO_b 14.523
+#define MQ6_CO_a 1000000000000000
+#define MQ6_CO_b -13.5
 
-#define MQ6_Alcohol_a -5.8057
-#define MQ6_Alcohol_b 7.5292
+#define MQ6_Alcohol_a 50000000
+#define MQ6_Alcohol_b -6.017
 /********************** MQ7 ******************************************************/
 
-#define MQ7_H2_a -1.329
-#define MQ7_H2_b 1.8864
+#define MQ7_H2_a 69.014
+#define MQ7_H2_b -1.374
 
-#define MQ7_LPG_a -7.8626
-#define MQ7_LPG_b 9.1056
+#define MQ7_LPG_a 700000000
+#define MQ7_LPG_b -7.703
 
-#define MQ7_CH4_a -5.4878
-#define MQ7_CH4_b 8.8387
+#define MQ7_CH4_a 60000000000000
+#define MQ7_CH4_b -10.54
 
-#define MQ7_CO_a -1.4065
-#define MQ7_CO_b 2.0162
+#define MQ7_CO_a 99.042
+#define MQ7_CO_b -1.518
 
-#define MQ7_Alcohol_a -6.3219
-#define MQ7_Alcohol_b 9.924
+#define MQ7_Alcohol_a 40000000000000000
+#define MQ7_Alcohol_b -12.35
 
 /********************** MQ8 ******************************************************/
 
-#define MQ8_H2_a -0.7152
-#define MQ8_H2_b 2.9891
+#define MQ8_H2_a 976.97
+#define MQ8_H2_b -0.688
 
-#define MQ8_LPG_a -3.419
-#define MQ8_LPG_b 7.3513
+#define MQ8_LPG_a 10000000
+#define MQ8_LPG_b -3.123
 
-#define MQ8_CH4_a -7.5609
-#define MQ8_CH4_b 15.243
+#define MQ8_CH4_a 80000000000000
+#define MQ8_CH4_b -6.666
 
-#define MQ8_CO_a -7.0753
-#define MQ8_CO_b 15.396
+#define MQ8_CO_a 2000000000000000000
+#define MQ8_CO_b -8.074
 
-#define MQ8_Alcohol_a -1.7459
-#define MQ8_Alcohol_b 4.7575
+#define MQ8_Alcohol_a 76101
+#define MQ8_Alcohol_b -1.86
 
 /********************** MQ9 ******************************************************/
 
-#define MQ9_LPG_a -2.2535
-#define MQ9_LPG_b 2.9855
+#define MQ9_LPG_a 1000.5
+#define MQ9_LPG_b -2.186
 
-#define MQ9_CH4_a -1.6012
-#define MQ9_CH4_b 3.1476
+#define MQ9_CH4_a 4269.6
+#define MQ9_CH4_b -2.648
 
-#define MQ9_CO_a -1.749
-#define MQ9_CO_b 2.827
+#define MQ9_CO_a 599.65
+#define MQ9_CO_b -2.244
 
 /********************** MQ131 ******************************************************/
 
-#define MQ131_NOx_a -2.7245
-#define MQ131_NOx_b 3.3004
+#define MQ131_NOx_a -462.43
+#define MQ131_NOx_b -2.204
 
-#define MQ131_CL2_a -1.0333
-#define MQ131_CL2_b 1.7117
+#define MQ131_CL2_a 47.209
+#define MQ131_CL2_b -1.186
 
-#define MQ131_O3_a -1.2037
-#define MQ131_O3_b 1.6455
+#define MQ131_O3_a 23.943
+#define MQ131_O3_b -1.11
 
 /********************** MQ135 ******************************************************/
 
-#define MQ135_CO_a -2.7268
-#define MQ135_CO_b 2.301
+#define MQ135_CO_a 605.18
+#define MQ135_CO_b -3.937
 
-#define MQ135_Alcohol_a -2.8608
-#define MQ135_Alcohol_b 1.8627
+#define MQ135_Alcohol_a 77.255
+#define MQ135_Alcohol_b -3.18
 
-#define MQ135_CO2_a -3.2819
-#define MQ135_CO2_b 1.9903
+#define MQ135_CO2_a 110.47
+#define MQ135_CO2_b -2.862
 
-#define MQ135_Tolueno_a -5.7015
-#define MQ135_Tolueno_b 1.1612
+#define MQ135_Tolueno_a 44.947
+#define MQ135_Tolueno_b -3.445
 
-#define MQ135_NH4_a -2.2119
-#define MQ135_NH4_b 2.0473
+#define MQ135_NH4_a 102.2
+#define MQ135_NH4_b -2.473
 
-#define MQ135_Acetona_a -5.9682
-#define MQ135_Acetona_b 1.0175
+#define MQ135_Acetona_a 34.668
+#define MQ135_Acetona_b -3.369
 
 /********************** MQ303 ******************************************************/
 
-#define MQ303_Iso_butano_a -2.3543
-#define MQ303_Iso_butano_b 1.144
+#define MQ303_Iso_butano_a 6.2144
+#define MQ303_Iso_butano_b -2.894
 
-#define MQ303_Hydrogeno_a -2.4338
-#define MQ303_Hydrogeno_b 0.7558
+#define MQ303_Hydrogeno_a 4.1487
+#define MQ303_Hydrogeno_b -2.716
 
-#define MQ303_Ethanol_a -2.5597
-#define MQ303_Ethanol_b 0.4436
+#define MQ303_Ethanol_a 3.4916
+#define MQ303_Ethanol_b -2.432
 
 /********************** MQ309 ******************************************************/
 
-#define MQ309_H2_a -2.1311
-#define MQ309_H2_b 3.0886
+#define MQ309_H2_a 1532.9
+#define MQ309_H2_b -1.951
 
-#define MQ309_CH4_a -1.6554
-#define MQ309_CH4_b 2.985
+#define MQ309_CH4_a 980.24
+#define MQ309_CH4_b -1.68
 
-#define MQ309_CO_a -4.7623
-#define MQ309_CO_b 6.7413
+#define MQ309_CO_a 1000000
+#define MQ309_CO_b -4.01
 
-#define MQ309_Alcohol_a -3.7686
-#define MQ309_Alcohol_b 5.6744
+#define MQ309_Alcohol_a 473622
+#define MQ309_Alcohol_b -3.647
 
-/*
-const String _MQ2[18] = {"H2","-2.2459","2.9845","LPG","-2.2879","2.7901","CO","-2.6208","3.6075","Alcohol","-3.1157","4.5134","Propane","-2.7028","3.5595","Benzene","-2.2879","2.7901"};
-const String _MQ3[18] = {"LPG","-3.1851","4.7048","CH4","-17.531","28.785","CO","-4.339","6.4432","Alcohol","-1.435","0.4103","Benzene","-2.7009","0.632","Hexane","-2.7268","3.6299"};
-const String _MQ4[15] = {"LPG","-2.5818","3.6303","CH4","0.9873","2.6386","CO","-5.5945","5.6693","Alcohol","-11.89","9.0375","smoke","-11.189","9.0375"};
-const String _MQ5[15] = {"H2","-4.368","2.9667","LPG","-2.5723","1.8943","CH4","-2.4438","2.3044","CO","-4.8188","5.2023","Alcohol","-4.419","4.8044"};
-const String _MQ6[15] = {"H2","-3.6775","5.0286","LPG","-1.6567","2.8775","CH4","-1","3.301","CO","-12.791","14.523","Alcohol","-5.8057","7.5292"};
-const String _MQ7[15] = {"H2","-1.329","1.8864","LPG","-7.8626","9.1056","CH4","-5.4878","8.8387","CO","-1.4065","2.0162","Alcohol","-6.3219","9.924"};
-const String _MQ8[15] = {"H2","-0.7152","2.9891","LPG","-3.419","7.3513","CH4","-7.5609","15.243","CO","-7.0753","15.396","Alcohol","-1.7459","4.7575"};
-const String _MQ9[9] = {"LPG","-2.2535","2.9855","CH4","-1.6012","3.1476","CO","-1.749","2.827"};
-const String _MQ131[9] = {"Nox","-2.7245","3.3004","CL2","-1.0333","1.7117","O3","-1.2037","1.6455"};
-const String _MQ135[18] = {"CO","-2.7268","2.301","Alcohol","-2.8608","1.8627","CO2","-3.2819","1.9903","Tolueno","-5.7015","1.1612","NH4","-2.2119","2.0473","Acetona","-5.9682","1.0175"};
-const String _MQ303A[9] = {"Iso-butano","-2.3543","1.144","Hydrogeno","-2.4338","0.7558","Ethanol","-2.5597","0.4436"};
-const String _MQ309A[12] = {"H2","-2.1311","3.0886","CH4","-1.6554","2.985","CO","-4.7623","6.7413","Alcohol","-3.7686","5.6744"};
-*/
 
 class MQUnifiedsensor
 {