In the serial monitor this gives the name with the value directly followed.
The previous code only showed the data name.
For my understanding, this is what you ment with a seperator or do you mean the same as a TAB but then an other sign like an X?
//send data to serial port for debugging/read data at the PC
Serial.print("sensorValue");
Serial.println(sensorValue);
Serial.print("speedstartValue");
Serial.println(speedstartValue);
Serial.print("speedcurveValue");
Serial.println(speedcurveValue);
Serial.print("brakeValue");
Serial.println(brakeValue);
Serial.print("brakecurve");
Serial.println(brakecurveValue);
Serial.print("sensorMin");
Serial.println(sensorMin);
Serial.print("sensorMax");
Serial.println(sensorMax);
Serial.print("modelName");
Serial.println(modelName);