GWR 7200 Class
Rebuild and operation
Table:
Class
Original
Rebuilt
Rebuild date

5205

5275
7200

August 1934

5276
7201

August–November 1934

5277
7202

5278
7203

5279
7204

5280
7205

5281
7206

5282
7207

5283
7208

5284
7209

5285
7210

5286
7211

5287
7212

5288
7213

5289
7214

5290
7215

5291
7216

5292
7217

5293
7218

5294
7219

5255
7220

August 1935–February 1936

5256
7221

5257
7222

5258
7223

5259
7224

5260
7225

5261
7226

5262
7227

5263
7228

5264
7229

5265
7230

5266
7231

5267
7232

5268
7233

5269
7234

5270
7235

5271
7236

5272
7237

5273
7238

5274
7239

4200[4]

4239
7240

August 1937–December 1939

4220
7241

4202
7242

4204
7243

4216
7244

4205
7245

4234
7246

4244
7247

4249
7248

4209
7249

4219
7250

4240
7251

4210
7252

4245
7253

Having looked at the tabular data covering 'GWR 7200 Class' titled 'Rebuild and operation', draft a brief sentence that explains what the highlighted cells show and format it within the following JSON object {"answer": "YOUR ANSWER"}.