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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20220605

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

301

Bus lines

89%

RED
Data quality

273

Critical observations

188

Advisory observations

Contents

Critical observations (273)

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

Timing (7)

Number of observations	Observation category
7	First stop is not a timing point

Data set (266)

Number of observations	Observation category
266	Missing block number

Advisory observations (188)

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. If the observation is a result of intended behaviour, an operator can suppress the observation.

Stop (47)

Number of observations	Observation category
47	Missing stops

Timing (133)

Number of observations	Observation category
133	No timing point for more than 15 minutes

Journey (8)

Number of observations	Observation category
8	Expired lines