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Data quality report

Uno_Welwyn Garden City_St Albans_20190518_5

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

110

Bus lines

92%

AMBER
Data quality

246

Critical observations

77

Advisory observations

Contents

Critical observations (246)

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

Timing (183)

Number of observations	Observation category
153	Fast timing between timing points
10	First stop is not a timing point
20	Last stop is not a timing point

Data set (63)

Number of observations	Observation category
63	Missing block number

Advisory observations (77)

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 (34)

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

Timing (37)

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

Journey (6)

Number of observations	Observation category
2	Expired lines
4	Journey overlap