Does the initial temperature of the ice affect how low the temperature of the ice-saltwater mixture will go?

You measure the initial temperature, land the plane and measure the final temperature.

The initial temperature is the same.

The initial temperature is 122 degrees and gradually increased over two hours to 194.

Record this value as the initial temperature.

If initial temperature is high, then an increase in average temperature, associated with global warming, can decrease the survival and reproduction rate of mosquitoes.

Some prefer an initial high temperature to sear and crisp the skin, followed by a long, slow roast.

Why did the ice met in the plain water faster in the second test even when the initial temperatures were the same?

Water heating is a thermodynamic process using an energy source to heat water above its initial temperature.