| DGS5 | 5 Year Treasury Yield | 
| GDP | US GDP Seasonally Adjusted | 
| NA000334Q | US GDP Not Seasonally Adjusted | 
| SP500 | S&P 500 | 
| stsm_bdiag | Build a block diagonal matrix from two matrices | 
| stsm_build_dates | Build the date sequence as a Date type | 
| stsm_check_exo | Data check for input exo | 
| stsm_check_exo_fc | Data check for input exo.fc | 
| stsm_check_y | Data check for input y | 
| stsm_constraints | Set the inequality constraints for estimation | 
| stsm_coxstuart | Cox-Stuart Test | 
| stsm_dates_to_interpolate | Create dates to interpolate | 
| stsm_detect_anomalies | Detect Anomalies | 
| stsm_detect_breaks | Detect Structural Breaks | 
| stsm_detect_cycle | Detect cycle from the data | 
| stsm_detect_frequency | Detect frequency and dates from the data | 
| stsm_detect_multiplicative | Detect if log transformation is best | 
| stsm_detect_seasonality | Detect seasonality from the data | 
| stsm_detect_trend | Detect trend type | 
| stsm_estimate | Trend cycle seasonal decomposition using the Kalman filter. | 
| stsm_filter | Kalman Filter | 
| stsm_fixed_pars | Fixed parameter setting | 
| stsm_forecast | Kalman Filter and Forecast | 
| stsm_format_exo | Format exo | 
| stsm_init_pars | Get initial parameter estimates for estimation | 
| stsm_na_kalman | Missing Value Imputation by Kalman Smoothing and State Space Models | 
| stsm_prior | Return a naive model prior decomposition | 
| stsm_ssm | State space model | 
| UNRATE | Unemployment Rate Seasonally Adjusted | 
| UNRATENSA | Unemployment Rate Not Seasonally Adjusted |