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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20220605_11

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

312

Bus lines

90%

RED
Data quality

313

Critical observations

207

Advisory observations

Contents

Critical observations (313)

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

Timing (46)

Number of observations	Observation category
41	Fast timing between timing points
5	First stop is not a timing point

Data set (267)

Number of observations	Observation category
267	Missing block number

Advisory observations (207)

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 (73)

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

Timing (112)

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

Journey (22)

Number of observations	Observation category
22	Expired lines