1/4

0.250

0.428

0.438

0.488

0.505

0.212

0.226

5/16

0.313

0.489

0.500

0.557

0.577

0.258

0.273

3/8

0.375

0.551

0.563

0.628

0.650

0.320

0.337

7/16

0.438

0.675

0.688

0.768

0.794

0.365

0.385

1/2

0.500

0.736

0.750

0.840

0.866

0.427

0.448

9/16

0.563

0.861

0.875

0.982

1.010

0.473

0.496

5/8

0.625

0.922

0.938

1.051

1.083

0.535

0.559

3/4

0.750

1.088

1.125

1.240

1.299

0.617

0.665

7/8

0.875

1.269

1.312

1.447

1.516

0.724

0.776

1

1.000

1.450

1.500

1.653

1.732

0.831

0.887

1 1/8

1.125

0.631

1.688

1.859

1.949

0.939

0.999

1 1/4

1.250

1.812

1.875

2.066

2.165

1.030

1.094

1 3/8

1.375

1.994

2.062

2.273

2.382

1.138

1.206

1 1/2

1.500

2.175

2.250

2.480

2.598

1.245

1.317

1 5/8

1.625

2.350

2.430

2.679

2.805

1.364

1.416

1 3/4

1.750

2.538

2.625

2.893

3.031

1.460

1.540

1 7/8

1.875

2.722

2.813

3.103

3.247

1.567

1.651

2

2.000

2.900

3.000

3.306

3.464

1.675

1.763

2 1/4

2.250

3.263

3.375

3.719

3.897

1.890

1.986

2 1/2

2.500

3.625

3.750

4.133

4.330

2.105

2.209

2 3/4

2.750

3.988

4.125

2.622

2.742

1.433

1.505

3

3.000

4.350

4.500

4.959

5.196

2.534

2.654

3 1/4

3.250

4.713

4.875

5.373

5.629

2.749

2.877

3 1/2

3.500

5.075

5.250

5.786

6.062

2.964

3.100

3 3/4

3.750

5.438

5.625

6.199

6.495

3.178

3.322

4

4.500

5.800

6.000

6.612

6.928

3.393

3.545