245 hit straight in Washington DC.
G1 means that the hit came from the first group:

230 231 234 235
236 237 238 239
240 241 243 245
246 247 248 249
250 251 253 254

416 417 418 419
420 421 423 425
426 427 428 429
430 431 432 435
436 437 438 439

256 257 258 259
260 261 263 264
265 267 268 269
270 271 273 274
275 276 278 279