Environment System is a Vanilla-Minecraft-based mechanic, which influences many aspects of your survival gameplay.
Thermometer, Rain Gauge ,and Hygrometer Based on Vanilla Minecraft's biome "temperature" data, After the Drizzle Mod devided biomes into 6 temperature levels.
You may refer to Minecraft Wiki to find out the biome temperature data.
Each temperature level has a corresponding scale on the Thermometer.
But the Thermometer will give you the actual temperature, which varies from time to time,
instead of the default biome temperature.
Based on Vanilla Minecraft's biome data, After the Drizzle Mod devided biomes into 5 rainfall levels.
You may refer to Minecraft Wiki to find out the biome data.
Rain Gauge can roughly reflect the rainfall level of your position, but not precisely.
Based on the temprature and rainfall level systems, After the Drizzle Mod devided biomes into 5 humid levels.
How Humid Levels devided
For each biome,
its Humid Level number = rainfall level number - floor(abs(rainfall level number - temperature level number) / 2).
abs() means to take the absolute value, floor() means to round down.
If you dislike calculating, just check the table below.
For "Rainfall and Temperature" column, the 2-digit number means：
The left digit means Rainfall Level number, the other digit means Temperature Level number.
11，12，13，14，15，16，24，25，26
Most environmental mechanics is related to the Humid system.
Glass * 7 + Water Bucket * 1 → Thermometer * 1 Glass * 6 + Bucket * 1 → Rain Gauge * 1 Thermometer * 1 + Rain Gauge * 1 → Hygrometer * 1 
