I have 100k thermistor and want to create a calibration table to be used

I have 100k thermistor and want to create a calibration table to be used in Marlin firmware,

My question is how do I create it, In below table snippet from thermistor.h, col2 should be temp i guess, but how the col1 is formed.

#define OVERSAMPLENR 16
const short temptable_1[][2] PROGMEM = {
{ 23OVERSAMPLENR , 300 },
{ 25
OVERSAMPLENR , 295 },
{ 27OVERSAMPLENR , 290 },
{ 28
OVERSAMPLENR , 285 },

See http://hydraraptor.blogspot.co.uk/2012/11/more-accurate-thermistor-tables.html

Thanks for the help. I am looking into it.