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Data quality report

Uno_Welwyn Garden City_St Albans_20190518_4

67

Bus lines

89%

RED
Data quality

147

Critical observations

51

Advisory observations

Contents

Critical observations (147)

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

Timing (92)
Number of observations Observation category
74 Fast timing between timing points
6 First stop is not a timing point
12 Last stop is not a timing point
Data set (55)
Number of observations Observation category
55 Missing block number

Advisory observations (51)

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 (32)
Number of observations Observation category
29 Missing stops
3 Stop(s) are not found in NaPTAN
Timing (18)
Number of observations Observation category
2 Fast running time between stops
16 No timing point for more than 15 minutes
Journey (1)
Number of observations Observation category
1 Expired lines