Data quality report

Uno_Welwyn Garden City_St Albans_20190518_2

81

Bus lines

96%

AMBER
Data quality

34

Critical observations

99

Advisory observations

Contents

Critical observations (34)

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

Stops (1)
Number of observations Observation category
1 Stop(s) are not found in NaPTAN
Timing (9)
Number of observations Observation category
9 Fast timing between timing points
Data set (24)
Number of observations Observation category
24 Missing block number

Advisory observations (99)

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.

Stops (23)
Number of observations Observation category
23 Missing stops
Timing (36)
Number of observations Observation category
2 Fast running time between stops
5 First stop is not a timing point
9 Last stop is not a timing point
20 No timing point for more than 15 minutes
Journey (40)
Number of observations Observation category
2 Duplicate journeys
2 Expired lines
36 Journey overlap