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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20220605_2

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

365

Bus lines

90%

RED
Data quality

326

Critical observations

294

Advisory observations

Contents

Critical observations (326)

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

Timing (12)

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

Data set (314)

Number of observations	Observation category
314	Missing block number

Advisory observations (294)

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 (58)

Number of observations	Observation category
58	Missing stops

Timing (217)

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

Journey (19)

Number of observations	Observation category
19	Expired lines