Table 2 Stepwise variable selection on dataset B

(Intercept)

248.911211

46.168830

5.391

9.01e−08

<.001

Monday

11.186836

1.049152

10.663

<2e−16

<.001

Friday

9.124763

1.405000

6.494

1.40e−10

<.001

Saturday

− 8.856937

1.151790

− 7.690

3.98e−14

<.001

Sunday

− 9.348118

1.858019

− 5.031

5.92e−07

<.001

May

− 2.833858

1.505424

− 1.882

0.060110

N.S.

August

− 2.783141

1.467921

− 1.896

0.058294

N.S.

Friday * Spring

6.425346

2.359589

2.723

0.006597

<.01

Wednesday * Summer

− 2.758180

1.800220

− 1.523

0.125852

N.S.

Friday * Summer

− 4.491005

2.170668

− 2.069

0.038845

<.05

Tuesday * Fall

− 4.747532

1.754273

− 2.706

0.006937

<.01

Thursday * Fall

− 4.330716

1.751428

− 2.473

0.013600

<.05

Saturday * Winter

− 4.727871

2.171958

− 2.177

0.029765

<.05

Summer vacation week 1 + 2

− 7.220153

1.869252

− 3.863

0.000120

<.001

Summer vacation week 3 + 4

− 9.962722

1.862460

− 5.349

1.13e−07

<.001

Friday * Vacation

− 6.502580

2.961668

− 2.196

0.028385

<.05

Monday * Holiday

− 23.301127

3.296739

− 7.068

3.22e−12

<.001

Wednesday * Holiday

− 23.211391

6.806075

− 3.410

0.000682

<.001

Thursday * Holiday

− 25.870551

5.598786

− 4.621

4.40e−06

<.001

Friday * Holiday

− 26.937684

9.743801

− 2.765

0.005820

<.01

Time trend

0.010184

0.001397

7.292

6.87e−13

<.001

Sunday * Time trend

− 0.006243

0.003389

− 1.842

0.065813

N.S.

Summer vacation * time trend

− 0.013159

0.002659

− 4.948

8.99e−07

<.001

Carnival * Time trend

0.026781

0.008749

3.061

0.002274

<.01

Summer * Minimum wind speed Kaathoven

1.227642

0.422316

2.907

0.003742

<.01

Summer * Minimum wind speed Drunen

− 1.104485

0.439693

− 2.512

0.012186

<.05

Maximum temperature Drunen

0.033942

0.009225

3.680

0.000248

<.001

Winter * Maximum temperature Kaathoven

− 0.072152

0.023500

− 3.070

0.002205

<.01

Radiation Drunen

0.003902

0.001086

3.592

0.000347

<.001

Maximum pressure Kaathoven

− 0.014939

0.004470

− 3.342

0.000866

<.001

Maximum humidity Drunen

− 0.244718

0.099745

− 2.453

0.014345

<.05

Winter * Mean humidity Kaathoven

1.056103

0.460616

2.293

0.022096

<.05

Winter * Mean humidity Drunen

− 0.942567

0.465086

− 2.072

0.043002

<.05

Cloudiness Kaathoven

4.299755

1.479477

2.906

0.003750

<.01

Cloudiness Drunen

− 3.950170

1.452272

− 2.720

0.006658

<.01

Minimum visibility Kaathoven

− 0.028843

0.011739

− 2.457

0.014203

<.05

Fall * Minimum visibility Drunen

0.060823

0.016224

3.749

0.000189

<.001

Fall * Maximum visibility Drunen

− 0.011680

0.004764

− 2.451

0.014422

<.05

Precipitation duration Kaathoven

− 0.229262

0.101833

− 2.939

0.003382

<.01

Precipitation duration Drunen

0.349550

0.102416

3.413

0.000672

<.001

Summer * Precipitation Kaathoven (precipitation stations)

− 0.040857

0.023192

− 1.762

0.078436

N.S.

Summer * Precipitation Duration Drunen

− 0.127771

0.043480

− 2.939

0.003384

<.01

Summer vacation * Precipitation Kaathoven (precipitation stations)

0.138976

0.046988

2.958

0.003183

<.01

Summer vacation * Maximum Precipitation Drunen

− 0.105203

0.046440

− 2.265

0.023736

<.05

Hours of fog

1.254639

0.292019

4.296

1.93e−05

<.001

Spring * Hours of fog Drunen

− 0.708256

0.492974

− 1.437

0.151162

N.S.

Winter * Hours of fog Kaathoven

− 2.742514

0.928981

− 2.952

0.003240

<.01

Winter * Hours of fog Drunen

1.726884

0.951881

1.814

0.069993

N.S.

Winter * Hours of snow

− 1.150906

0.375299

− 3.067

0.002232

<.01

Residual standard error

Multiple R-squared

Adjusted R-squared

F-statistic