Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20210411_7

• Please find your data quality observations below.
• What are the different type of observations?
• Download data quality report.csv

419

Bus lines

98%

AMBER
Data quality

66

Critical observations

288

Advisory observations

Contents

Critical observations (66)

These observations are considered critical in terms of data quality. An operator should aim to have zero critical observations in their data.

Data set (66)

Number of observations	Observation category
66	Missing block number

Advisory observations (288)

These observations suggest there may be an error in the data. However, for some types of services these may be intended by the operator. Advisory observations should be investigated and addressed.

Stops (56)

Number of observations	Observation category
56	Missing stops

Timing (204)

Number of observations	Observation category
14	First stop is not a timing point
2	Last stop is not a timing point
188	No timing point for more than 15 minutes

Journey (28)

Number of observations	Observation category
22	Expired lines
6	Journey overlap