Example
Here is an example with all the available factors:
mobs: - name: pig conditions: - spawn: no world: raining: yes thundering: yes times: - {min: 1000, max: 5000} heights: - {min: 20, max: 50} biomes: - taiga - desert types: - normal - nether - the_end reasons: - custom - natural - egg - lightning - spawner - bed real: years: - {min: 2011, max: 2013} months: - jan - mar - 11 dates: - {min: 2, max: 13} days: - mon - wed - 6 hours: - {min: 2, max: 20} minutes: - {min: 25, max: 35} seconds: - {min: 10, max: 45} year_weeks: - {min: 5, max: 10} month_weeks: - {min: 1, max: 3} year_days: - {min: 100, max: 200} - spawn: yes