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Data quality report

Arriva UK Bus_Colchester_Welwyn Garden City_20210411_7

419

Bus lines

98%

AMBER
Data quality

66

Critical observations

288

Advisory observations

Contents

Critical observations (66)

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

Data set (66)
Number of observations Observation category
66 Missing block number

Advisory observations (288)

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 observation should be investigated and addressed.

Stops (56)
Number of observations Observation category
56 Missing stops
Timing (204)
Number of observations Observation category
14 First stop is not a timing point
2 Last stop is not a timing point
188 No timing point for more than 15 minutes
Journey (28)
Number of observations Observation category
22 Expired lines
6 Journey overlap