| clean_playground_data | Clean tracking data (complete pipeline) |
| fix_tag_replacement | Fix tag replacements in raw data |
| interpolate_gaps | Interpolate gaps in location tracking data (two-phase approach) |
| map_ids | Map raw tracking IDs to standardized child IDs |
| mark_time_periods | Mark time periods for analysis and bell time in raw data |
| standardize_to_seconds | Standardize location data to fixed time intervals |