+ - × ÷ xⁿ ( ) π e ln log₁₀ exp √ |x| round clamp normalize anomaly mean sum std median min max roll.mean roll.sum roll.max roll.min roll.std delta rate smooth cumsum_since degree_days DD_bifix period_sum period_mean period_max period_min days_above days_below days_since_min days_since_max since_first_above since_first_below streak_above streak_below vpd humidex wind_chill heat_index frost_risk day_of_year hour_of_day month_of_year day_of_week fallback(a|b) if_else depuis date pow prod utm_daily utm_cumul tmmp5 roll.mean_pond. last_frost_date first_frost_date frost_free_days cdf5_cumul dj_hivernal freeze_thaw_cycles etp_baier etp_cumul extraterrestrial_rad p_etp_monthly hay_drying_index wet_bulb delta_t