图4(a)的部分分段点

136.9731

157.4272

104.7405

713.9076

1235

296.0398

119.1518

160.2593

104.5077

776.0825

1181.041

295.6419

105.9134

183.9904

137.9984

801.0283

1182.268

245.0671

114.0397

249.9153

1143.024

803.504

1182.428

185.9378

102.0103

293.315

1181.557

776.937

1151.001

158.9711

42.90871

294.7153

1177.089

711.8411

273

155.8409

19.56276

317.1579

1183.024

666.585

272.0001

155.8406