1. To help you understand, information from wikipedia:
https://en.wikipedia.org/wiki/Thermistor#B_or_%CE%B2_parameter_equation
2. I want something like this(On page 1, you can see that B value is 3435K +/- 1%):
https://www.alphacool.com/download/kOhm_Sensor_Table_Alphacool.pdf
Thank you!