The difference in volume is determined by the temperature of the fuel and the coefficient of expansion associated with the type and density of fuel that result in a Volume Correction Factor (VCF) that would be some fraction either greater or less than one. These VCFs are then applied to average retail prices as part of the initial step to quantify potential consumer benefits.

The chart is a standard correction for temperature and specific gravity of the fuel. It uses an average of yearly temperature in the area where the fuel is dispensed.

For example, Hawaii uses a higher temperature on their compensation chart.

The Philippines should be using a chart that reflects their climate too.

The 15 degrees C standard is for the 48 states. Not Hawaii or the Philippines.

Do you think you are being shorted by receiving a volume of Kerosene rated at a certain sg and 15 C?

I do.

The lower temperature compensation means you get a smaller volume of fuel at a higher temperature.