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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20230101

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

559

Bus lines

92%

AMBER
Data quality

480

Critical observations

364

Advisory observations

Contents

Critical observations (480)

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

Timing (89)

Number of observations	Observation category
79	Fast timing between timing points
10	First stop is not a timing point

Data set (391)

Number of observations	Observation category
391	Missing block number

Advisory observations (364)

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 (72)

Number of observations	Observation category
62	Missing stops
10	Stop(s) are not found in NaPTAN

Timing (233)

Number of observations	Observation category
2	Fast running time between stops
231	No timing point for more than 15 minutes

Journey (59)

Number of observations	Observation category
59	Expired lines