How to distinguish the temperate continental, continental and sharply continental temperate zones?

First, there is a regular increase in the temperature amplitude (winter is longer and colder, summer is shorter and hotter):
– y-k: winter -12 ° -15 °, summer + 12 ° + 15 °.
– k: winter -16 ° -20 °, summer + 20 °.
– rk: winter -30 ° (up to -70 °), summer + 20 ° + 25 °.
Secondly, the amount of precipitation decreases (the distance from the Atlantic increases):
– y-k: 500 – 700 mm
– k: 400 – 500 mm
– size: 300 – 400 mm