UV meter in Arduino Uno

uv_meter.ino

void setup()
{
    // open serial port, set the baud rate to 9600 bps
    Serial.begin(115200);
}
void loop()
{
    float UVIndex;
    
    // Connect UV sensors to Analog 0
    int32_t sensorValue = analogRead(0);
    float voltValue = 5.0f * (sensorValue) / 1024.0f;

    if(voltValue <= 200e-3)
        UVIndex = voltValue/0.2f;
    else
        UVIndex = 2.0f*voltValue/0.2f;
    

    // Print the value to serial
    Serial.print(voltValue);
    Serial.print(",");
    Serial.println(UVIndex);
    delay(200);
}