Research default behavior?

[VojtaHavlicek]

print(df.head())```

Returns daily means, but no hourly station observations by default. How do I access hourly data? 
Can we fix this in the docs?

[helloiamvu]

Addressed in v1.6.0. The research() docstring now clarifies it returns one daily settlement-summary row per date (obs_* are settlement-window aggregates), points to weather.obs() for an observation-only daily frame, and notes that sub-daily / raw_metar access is a Sprint 0.5+ item. Shipped via #70 → #71 (4c0bd19).