Dimension

Question items

CITC

Cronbach’s alpha after project deletion

Cronbach’s alpha

Safety

A1

0.724

0.886

0.901

A2

0.759

0.878

A3

0.748

0.880

A4

0.766

0.876

A5

0.772

0.876

Comfort

B1

0.706

0.846

0.874

B2

0.699

0.848

B3

0.706

0.846

B4

0.725

0.842

B5

0.675

0.854

Aesthetics

C1

0.687

0.848

0.872

C2

0.696

0.846

C3

0.696

0.846

C4

0.730

0.838

C5

0.687

0.848

Reachability

D1

0.757

0.859

0.889

D2

0.715

0.869

D3

0.717

0.869

D4

0.728

0.866

0.889

D5

0.737

0.864

Facility completeness

F1

0.745

0.859

0.887

F2

0.726

0.863

F3

0.711

0.866

F4

0.769

0.854

F5

0.691

0.872

Dynamic Communication Activity

G1

0.704

0.806

0.852

G2

0.658

0.826

G3

0.688

0.813

G4

0.718

0.800

Static Communication Activity

P1

0.662

0.805

0.841

P2

0.681

0.796

P3

0.684

0.796

P4

0.676

0.799

Subjective Happiness

Q1

0.670

0.847

0.868

Q2

0.701

0.838

Q3

0.706

0.837

Q4

0.697

0.840

Q5

0.689

0.842