Five parameter models

Four parameter models

Three parameter models

Overall statistics

Model

VG1

FX

Omuto

VG2

Gard

D.expo

Ruso

BC

Kosugi

MB

Tani

Campbel

RSE

0.0106

0.0166

0.0099

0.0123

0.0134

0.0200

0.0287

0.0535

0.0375

0.0241

0.0292

0.1112

r2

0.9956

0.9891

0.9958

0.9940

0.9929

0.9844

0.9677

0.8869

0.9448

0.9785

0.9688

0.4899

EF

0.9955

0.9891

0.9958

0.9940

0.9929

0.9844

0.9675

0.8868

0.9448

0.9785

0.9688

0.4736

Correlation (r2) for Subsoil

Model

VG1

FX

Omuto

VG2

Gard

D.expo

Ruso

BC

Kosugi

MB

Tani

Campbel

Africa

0.9932

0.9964

0.9947

0.9931

0.9896

0.9824

0.9719

0.8678

0.9649

0.9764

0.9722

0.3736

C. America

0.9982

0.9564

0.9955

0.9973

0.9952

0.9776

0.9005

0.9998

0.9110

0.8610

0.2614

S. America

0.9945

0.9923

0.9936

0.9922

0.9921

0.9847

0.9523

0.8397

0.8296

0.9800

0.9761

0.3031

Europe

0.9954

0.9573

0.9948

0.9935

0.9929

0.9806

0.9548

0.7879

0.9330

0.9732

0.9553

0.0015

N. Asia

0.9926

0.9910

0.9923

0.9899

0.9898

0.9825

0.9868

0.9134

0.9598

0.9749

0.9604

0.9515

S. Asia

0.9953

0.9896

0.9987

0.9903

0.9884

0.9585

0.7872

0.8745

0.8340

0.9396

0.8990

0.3563

M. East

0.9989

0.9979

0.9978

0.9977

0.9927

0.9779

0.9615

0.8075

0.8090

0.9481

0.9067

0.5617

Correlation (r2) for Topsoil

Model

VG1

FX

Omuto

VG2

Gard

D.expo

Ruso

BC

Kosugi

MB

Tani

Campbel

Africa

0.9955

0.9960

0.9929

0.9919

0.9908

0.9844

0.9711

0.8580

0.9369

0.9706

0.9596

0.6117

C. America

0.9948

0.9920

0.9835

0.9888

0.9924

0.9342

0.8353

0.9454

0.9760

0.9722

0.9487

0.7219

S. America

0.9973

0.9976

0.9950

0.9935

0.9857

0.9801

0.9463

0.8166

0.8975

0.9624

0.9395

0.8226

Europe

0.9971

0.8734

0.9961

0.9942

0.9955

0.9644

0.8693

0.7890

0.8711

0.9579

0.9275

0.4374

N. Asia

0.9972

0.9969

0.9991

0.9968

0.9947

0.9863

0.9688

0.8927

0.8708

0.9736

0.9550

0.5899

S. Asia

0.9943

0.9875

0.9986

0.9883

0.9872

0.9486

0.7800

0.8362

0.8344

0.9307

0.8754

0.7562

M. East

0.9962

0.9941

0.9977

0.9731

0.9716

0.9571

0.8018

0.8613

0.8434

0.9210

0.8915

0.7763