4 - Green, -12°C to -32°C, Extreme cold conditions
5 - Turquoise, -8°C to -14°C, Very cold conditions
6 - Blue, -5°C to -10°C, Cold conditions
7 - Violet, -2°C to -8°C, Normal winter conditions, just below freezing
8 - Red, 4°C to 4°C, Zero and above freezing, great on warmer artifical snow
10 - Yellow, 0°C to 10°C, Above freezing, great on wet contaminated and artifical snow.