Trying to figure out tuning values for PolyFormer #17

/******************************************************************
 sTune QuickPID Example
 This sketch does on-the-fly tunning and PID Digital Output control
 of a thermal heater (TIP31C). Tunning parameters are quickly
 determined and applied during the temperature ramp-up to setpoint.
 Open the serial plotter to view the graphical results.
*****************************************************************/
#include <sTune.h>
#include <QuickPID.h>
#include <Thermistor.h>
#include <NTC_Thermistor.h>
#define SENSOR1_PIN PA2
#define REFERENCE_RESISTANCE 4700
#define NOMINAL_RESISTANCE 100000
#define NOMINAL_TEMPERATURE 25
#define B_VALUE 3950
#define STM32_ANALOG_RESOLUTION 65535 //16 Bit resolution
Thermistor* thermistor1;
// pins
//const uint8_t inputPin = 0;
const uint8_t relayPin = PA7;
// user settings
uint32_t settleTimeSec = 10;
uint32_t testTimeSec = 500;
const uint16_t samples = 500;
const float inputSpan = 280;
const float outputSpan = 1000;
float outputStart = 0;
float outputStep = 500;
float tempLimit = 280;
uint8_t debounce = 1;
// variables
float Input, Output, Setpoint = 220, Kp, Ki, Kd;
sTune tuner = sTune(&Input, &Output, tuner.ZN_PID, tuner.directIP, tuner.printOFF);
QuickPID myPID(&Input, &Output, &Setpoint);
void setup() {
 pinMode(relayPin, OUTPUT);
 Serial.begin(115200);
 analogReadResolution(16); //Set Resolution of ADC to 16 bit, this will pad any lower resolution values, giving us future flexability -------------------------------------------------
 thermistor1 = new NTC_Thermistor(
 SENSOR1_PIN,
 REFERENCE_RESISTANCE,
 NOMINAL_RESISTANCE,
 NOMINAL_TEMPERATURE,
 B_VALUE,
 STM32_ANALOG_RESOLUTION // <- for a thermistor calibration
 );
 while (!Serial) delay(10);
 delay(3000);
 tuner.Configure(inputSpan, outputSpan, outputStart, outputStep, testTimeSec, settleTimeSec, samples);
 tuner.SetEmergencyStop(tempLimit);
}
void loop() {
 float optimumOutput = tuner.softPwm(relayPin, Input, Output, Setpoint, outputSpan, debounce);
 switch (tuner.Run()) {
 case tuner.sample: // active once per sample during test
 Input = thermistor1->readCelsius();
 tuner.plotter(Input, Output, Setpoint, 0.2f, 3); // output scale 0.2, plot every 3rd sample
 break;
 case tuner.tunings: // active just once when sTune is done
 tuner.GetAutoTunings(&Kp, &Ki, &Kd); // sketch variables updated by sTune
 myPID.SetOutputLimits(0, outputSpan);
 myPID.SetSampleTimeUs((outputSpan - 1) * 1000);
 //debounce = 0; // ssr mode
 Output = outputStep;
 myPID.SetMode(myPID.Control::automatic); // the PID is turned on
 myPID.SetProportionalMode(myPID.pMode::pOnMeas);
 myPID.SetAntiWindupMode(myPID.iAwMode::iAwClamp);
 myPID.SetTunings(Kp, Ki, Kd); // update PID with the new tunings
 break;
 case tuner.runPid: // active once per sample after tunings
 Input = thermistor1->readCelsius();
 myPID.Compute();
 tuner.plotter(Input, optimumOutput, Setpoint, 0.2f, 3); // output scale 0.2, plot every 3rd sample
 break;
 }
}