concept

CH column metadata: archives_i90.offer_rtr.price

Offer price in EUR/MWh. Sentinel 9999.99 = 'no offer this period' — always include `price < 9999` in WHERE.

# `archives_i90.offer_rtr.price` Offer price in EUR/MWh. Sentinel 9999.99 = 'no offer this period' — always include `price < 9999` in WHERE. - **unit**: EUR/MWh - **common_pitfalls**: - Quantile / avg without sentinel filter produces meaningless results dominated by 9999.99