简单概括
标准：正常/雾天/傍晚(Sunset)/日落(Sundown)/蛇月/大雨（提升出现概率）
外卡：大雾/日落/大雨
另外鳄鱼一定会在单BOSS图出现，无论天气
原文：
Standard Contract Rotation:The following Times of Day/Conditions will be available in the Standard Contract rotation:
Neutral.
Fog.
Gold.
Sunset.
Sundown.
Serpent Moon Night.
Thundershower (increased chance to encounter this Condition).
Rotjaw:Rotjaw will now have a chance to spawn in the following Times of Day/Conditions:
Serpent Moon Night.
Fog.
Sundown.
Thundershower.
If you are matched into any of these Times of Day/Conditions with a single Boss Target, Rotjaw will have a 100% chance to appear in that mission.