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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20211219

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

693

Bus lines

96%

AMBER
Data quality

245

Critical observations

199

Advisory observations

Contents

Critical observations (245)

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

Timing (19)

Number of observations	Observation category
1	Fast timing between timing points
18	First stop is not a timing point

Data set (226)

Number of observations	Observation category
226	Missing block number

Advisory observations (199)

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 (51)

Number of observations	Observation category
51	Missing stops

Timing (137)

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

Journey (11)

Number of observations	Observation category
11	Expired lines