Measure Gyro Values with a Gyro Sensor

#include<Wire.h>

const int MPU_addr = 0x68;
int16_t GyX, GyY, GyZ; 
int red = 6;
int green = 5;
int blue = 4;

void setup() {
  Wire.begin(); 
  Wire.beginTransmission(MPU_addr); 
  Wire.write(0x6B);  
  Wire.write(0); 
  Wire.endTransmission(true); 
  Serial.begin(9600);
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
}

void loop() {
  gyro();
  led();
}

void gyro() {
  Wire.beginTransmission(MPU_addr); 
  Wire.write(0x3B); 
  Wire.endTransmission(false); 
  Wire.requestFrom(MPU_addr, 14, true); 
  GyX = Wire.read() << 8|Wire.read(); 
  GyY = Wire.read() << 8|Wire.read(); 
  GyZ = Wire.read() << 8|Wire.read();
  GyX = GyX / 100;
  GyY = GyY / 100;
  GyZ = GyZ / 100;
  Serial.print(F("gyro x,y,z : "));
  Serial.print("| GyX = ");
  Serial.print(GyX);
  Serial.print("| GyY = ");
  Serial.print(GyY);
  Serial.print("| GyZ = ");
  Serial.print(GyZ);
  Serial.println();
  delay(300);
}

void led() {
    if (GyX >= -20 && GyX <= -10) {
    if (GyY >= -10 && GyY <= 0) {
    if (GyZ >= 145 && GyZ <= 155) {
      digitalWrite(red, HIGH);
      digitalWrite(green, HIGH);
      digitalWrite(blue, HIGH);
  }
  }
  }
    else if (GyX >= 0 && GyX <= 10) {
    if (GyY >= -175 && GyY <= -165) {
    if (GyZ >= -20 && GyZ <= -10) {
      digitalWrite(red, HIGH);
      digitalWrite(green, LOW);
      digitalWrite(blue, LOW);
  }
  }
  }
    else if (GyX >= 165 && GyX <= 175) {
    if (GyY >= -10 && GyY <= 0) {
    if (GyZ >= 10 && GyZ <= 20) {
      digitalWrite(red, LOW);
      digitalWrite(green, HIGH);
      digitalWrite(blue, LOW);
  }
  }
  }
    else if (GyX >= -155 && GyX <= -145) {
    if (GyY >= -5 && GyY <= 5) {
    if (GyZ >= -40 && GyZ <= -30) {
      digitalWrite(red, LOW);
      digitalWrite(green, LOW);
      digitalWrite(blue, HIGH);
  }
  }
  }
  else {
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
    digitalWrite(blue, LOW);
  }
}