Sending data from NodeMCU but channel graph does not update | ESP Wi-Fi | Forum

The number of entries are increasing but there's nothing on the graph. The serial monitor also shows that data is being uploaded. please help.
Channel number 709360

#include
#include
#include
#include
#define LED D4 // Led in NodeMCU at pin GPIO16 (D0).
Servo servo_test;
int gas = A0;
int angle=0;
const char* ssid = "**************";
const char* password = "**************";
WiFiClient client;
unsigned long myChannelNumber = 709360;
const char * myWriteAPIKey = "*************";
void setup()
{
pinMode(D0,OUTPUT);
pinMode(D1,OUTPUT);
pinMode(gas,INPUT);
servo_test.attach(D2);
Serial.begin(115200);
delay(10);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);

Serial.print(";");
}
pinMode(LED, OUTPUT); // set the digital pin as output.
digitalWrite(LED, HIGH);// turn the LED off.(Note that LOW is the voltage level but actually
//the LED is on; this is because it is acive low on the ESP8266.
delay(1000); // wait for 1 second.
digitalWrite(LED, LOW); // turn the LED on.

Serial.println("");
Serial.println("WiFi connected");
// Print the IP address
Serial.println(WiFi.localIP());
ThingSpeak.begin(client);
}
void loop()
{
static boolean data_state = true;
int sensorValue = analogRead(gas);
float a = sensorValue*(5.0/1023.0);
if(a>1)
{
ThingSpeak.writeField(myChannelNumber, 2,a , myWriteAPIKey);
Serial.println("uploaded");
digitalWrite(D1,LOW);
digitalWrite(D0,HIGH);
for(angle = 0; angle < 180; angle += 1) // command to move from 0 degrees to 180 degrees
{
servo_test.write(angle); //command to rotate the servo to the specified angle
delay(15);
}
}
else
{
digitalWrite(D0,LOW);
digitalWrite(D1,HIGH);
ThingSpeak.writeField(myChannelNumber, 2,a , myWriteAPIKey);
Serial.println("uploaded");
}
Serial.println(a);
delay(1000);

// Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
// pieces of information in a channel. Here, we write to field 1.
delay(1000); // ThingSpeak will only accept updates every 1 second.
}