Dataset pack
Sensor readings with sentinel codes
Readings from three sensors where -999 means no reading was taken.
Fictional data · UTF-8 CSV, every value quoted so padding and leading zeros survive; empty fields are missing values · free for personal and classroom practice · practise it in Turn sentinel codes into missing values.
readings 15 rows × 3 columns
Download readings.csv (Pro)Data dictionary
- id
- Unique reading ID.
- sensor
- Sensor name.
- value
- Whole-number reading; -999 or blank means not recorded.
Values are shown in quotes so leading and trailing spaces are visible. ∅ means the cell is missing. Exercises are also graded on hidden datasets that are never published.