void setup() {
  char data[] = "23.4,21,32.6,56,66.7,12.4,9,22.22";
  Serial.begin(115200);
  float room1t, room2t, room3t, room4t, room5t, room6t, room7t, room8t;
  sscanf(data, "%f,%f,%f,%f,%f,%f,%f,%f",
         &room1t, &room2t, &room3t, &room4t, &room5t, &room6t, &room7t, &room8t);
  Serial.println(room1t);
  Serial.println(room2t);
  Serial.println( room3t);
  Serial.println(room4t);
  Serial.println( room5t);
  Serial.println(room6t);
  Serial.println( room7t);
  Serial.println(room8t);
}

void loop() {}