Measurement results by the hour (Chofu) 30 Aug., 2021 - 5 Sep., 2021

Shown in µGy/h (microgray per hour)

Gray indicates an amount of energy (absorbed dose) when radiation hits a material object, and 1 gray (Gy) of radiation doses in the air can be converted to 1 sievert (Sv).

Measurement time Dose rate
μGy/h (microgray per hour)
Maximum value Minimum value Average value
23:01-24:00, Sun., 05 Sep. 0.0283 0.0244 0.0262
22:01-23:00, Sun., 05 Sep. 0.0281 0.0241 0.0262
21:01-22:00, Sun., 05 Sep. 0.0281 0.0246 0.0260
20:01-21:00, Sun., 05 Sep. 0.0285 0.0238 0.0261
19:01-20:00, Sun., 05 Sep. 0.0286 0.0244 0.0261
18:01-19:00, Sun., 05 Sep. 0.0282 0.0240 0.0262
17:01-18:00, Sun., 05 Sep. 0.0279 0.0247 0.0262
16:01-17:00, Sun., 05 Sep. 0.0287 0.0249 0.0266
15:01-16:00, Sun., 05 Sep. 0.0282 0.0247 0.0265
14:01-15:00, Sun., 05 Sep. 0.0280 0.0240 0.0263
13:01-14:00, Sun., 05 Sep. 0.0281 0.0248 0.0265
12:01-13:00, Sun., 05 Sep. 0.0278 0.0237 0.0262
11:01-12:00, Sun., 05 Sep. 0.0286 0.0246 0.0268
10:01-11:00, Sun., 05 Sep. 0.0284 0.0247 0.0267
09:01-10:00, Sun., 05 Sep. 0.0285 0.0245 0.0265
08:01-09:00, Sun., 05 Sep. 0.0290 0.0249 0.0269
07:01-08:00, Sun., 05 Sep. 0.0293 0.0258 0.0272
06:01-07:00, Sun., 05 Sep. 0.0303 0.0262 0.0282
05:01-06:00, Sun., 05 Sep. 0.0358 0.0284 0.0321
04:01-05:00, Sun., 05 Sep. 0.0396 0.0327 0.0361
03:01-04:00, Sun., 05 Sep. 0.0346 0.0287 0.0311
02:01-03:00, Sun., 05 Sep. 0.0346 0.0280 0.0316
01:01-02:00, Sun., 05 Sep. 0.0372 0.0309 0.0350
00:01-01:00, Sun., 05 Sep. 0.0380 0.0303 0.0345
23:01-24:00, Sat., 04 Sep. 0.0355 0.0290 0.0317
22:01-23:00, Sat., 04 Sep. 0.0445 0.0318 0.0377
21:01-22:00, Sat., 04 Sep. 0.0490 0.0404 0.0453
20:01-21:00, Sat., 04 Sep. 0.0455 0.0303 0.0394
19:01-20:00, Sat., 04 Sep. 0.0364 0.0302 0.0329
18:01-19:00, Sat., 04 Sep. 0.0356 0.0304 0.0325
17:01-18:00, Sat., 04 Sep. 0.0346 0.0301 0.0319
16:01-17:00, Sat., 04 Sep. 0.0332 0.0259 0.0294
15:01-16:00, Sat., 04 Sep. 0.0301 0.0258 0.0273
14:01-15:00, Sat., 04 Sep. 0.0308 0.0267 0.0285
13:01-14:00, Sat., 04 Sep. 0.0301 0.0267 0.0283
12:01-13:00, Sat., 04 Sep. 0.0301 0.0252 0.0276
11:01-12:00, Sat., 04 Sep. 0.0318 0.0266 0.0295
10:01-11:00, Sat., 04 Sep. 0.0329 0.0281 0.0302
09:01-10:00, Sat., 04 Sep. 0.0322 0.0273 0.0303
08:01-09:00, Sat., 04 Sep. 0.0298 0.0260 0.0273
07:01-08:00, Sat., 04 Sep. 0.0290 0.0255 0.0272
06:01-07:00, Sat., 04 Sep. 0.0302 0.0262 0.0283
05:01-06:00, Sat., 04 Sep. 0.0302 0.0253 0.0272
04:01-05:00, Sat., 04 Sep. 0.0285 0.0246 0.0266
03:01-04:00, Sat., 04 Sep. 0.0280 0.0252 0.0266
02:01-03:00, Sat., 04 Sep. 0.0287 0.0254 0.0268
01:01-02:00, Sat., 04 Sep. 0.0300 0.0254 0.0276
00:01-01:00, Sat., 04 Sep. 0.0312 0.0268 0.0293
23:01-24:00, Fri., 03 Sep. 0.0319 0.0261 0.0292
22:01-23:00, Fri., 03 Sep. 0.0305 0.0265 0.0286
21:01-22:00, Fri., 03 Sep. 0.0344 0.0278 0.0302
20:01-21:00, Fri., 03 Sep. 0.0365 0.0324 0.0344
19:01-20:00, Fri., 03 Sep. 0.0320 0.0265 0.0293
18:01-19:00, Fri., 03 Sep. 0.0377 0.0289 0.0338
17:01-18:00, Fri., 03 Sep. 0.0406 0.0347 0.0370
16:01-17:00, Fri., 03 Sep. 0.0375 0.0304 0.0333
15:01-16:00, Fri., 03 Sep. 0.0341 0.0298 0.0321
14:01-15:00, Fri., 03 Sep. 0.0320 0.0276 0.0297
13:01-14:00, Fri., 03 Sep. 0.0304 0.0263 0.0286
12:01-13:00, Fri., 03 Sep. 0.0333 0.0271 0.0299
11:01-12:00, Fri., 03 Sep. 0.0407 0.0315 0.0352
10:01-11:00, Fri., 03 Sep. 0.0426 0.0362 0.0391
09:01-10:00, Fri., 03 Sep. 0.0388 0.0330 0.0356
08:01-09:00, Fri., 03 Sep. 0.0364 0.0325 0.0345
07:01-08:00, Fri., 03 Sep. 0.0420 0.0352 0.0378
06:01-07:00, Fri., 03 Sep. 0.0424 0.0360 0.0386
05:01-06:00, Fri., 03 Sep. 0.0421 0.0347 0.0375
04:01-05:00, Fri., 03 Sep. 0.0490 0.0360 0.0410
03:01-04:00, Fri., 03 Sep. 0.0496 0.0345 0.0433
02:01-03:00, Fri., 03 Sep. 0.0408 0.0327 0.0360
01:01-02:00, Fri., 03 Sep. 0.0437 0.0327 0.0373
00:01-01:00, Fri., 03 Sep. 0.0367 0.0331 0.0352
23:01-24:00, Thu., 02 Sep. 0.0442 0.0361 0.0403
22:01-23:00, Thu., 02 Sep. 0.0523 0.0413 0.0451
21:01-22:00, Thu., 02 Sep. 0.0531 0.0452 0.0489
20:01-21:00, Thu., 02 Sep. 0.0607 0.0468 0.0528
19:01-20:00, Thu., 02 Sep. 0.0608 0.0352 0.0484
18:01-19:00, Thu., 02 Sep. 0.0369 0.0328 0.0346
17:01-18:00, Thu., 02 Sep. 0.0370 0.0308 0.0343
16:01-17:00, Thu., 02 Sep. 0.0381 0.0327 0.0353
15:01-16:00, Thu., 02 Sep. 0.0396 0.0317 0.0359
14:01-15:00, Thu., 02 Sep. 0.0342 0.0296 0.0322
13:01-14:00, Thu., 02 Sep. 0.0371 0.0303 0.0329
12:01-13:00, Thu., 02 Sep. 0.0482 0.0359 0.0411
11:01-12:00, Thu., 02 Sep. 0.0468 0.0405 0.0437
10:01-11:00, Thu., 02 Sep. 0.0476 0.0405 0.0438
09:01-10:00, Thu., 02 Sep. 0.0433 0.0330 0.0367
08:01-09:00, Thu., 02 Sep. 0.0404 0.0313 0.0359
07:01-08:00, Thu., 02 Sep. 0.0392 0.0304 0.0340
06:01-07:00, Thu., 02 Sep. 0.0430 0.0349 0.0385
05:01-06:00, Thu., 02 Sep. 0.0428 0.0363 0.0395
04:01-05:00, Thu., 02 Sep. 0.0475 0.0368 0.0412
03:01-04:00, Thu., 02 Sep. 0.0526 0.0421 0.0466
02:01-03:00, Thu., 02 Sep. 0.0510 0.0355 0.0430
01:01-02:00, Thu., 02 Sep. 0.0366 0.0271 0.0311
00:01-01:00, Thu., 02 Sep. 0.0312 0.0268 0.0291
23:01-24:00, Wed., 01 Sep. 0.0320 0.0280 0.0303
22:01-23:00, Wed., 01 Sep. 0.0332 0.0293 0.0311
21:01-22:00, Wed., 01 Sep. 0.0338 0.0271 0.0311
20:01-21:00, Wed., 01 Sep. 0.0308 0.0261 0.0284
19:01-20:00, Wed., 01 Sep. 0.0320 0.0278 0.0298
18:01-19:00, Wed., 01 Sep. 0.0340 0.0293 0.0319
17:01-18:00, Wed., 01 Sep. 0.0336 0.0289 0.0311
16:01-17:00, Wed., 01 Sep. 0.0330 0.0291 0.0307
15:01-16:00, Wed., 01 Sep. 0.0319 0.0281 0.0300
14:01-15:00, Wed., 01 Sep. 0.0316 0.0283 0.0299
13:01-14:00, Wed., 01 Sep. 0.0322 0.0279 0.0306
12:01-13:00, Wed., 01 Sep. 0.0327 0.0278 0.0303
11:01-12:00, Wed., 01 Sep. 0.0304 0.0259 0.0277
10:01-11:00, Wed., 01 Sep. 0.0294 0.0259 0.0278
09:01-10:00, Wed., 01 Sep. 0.0295 0.0257 0.0277
08:01-09:00, Wed., 01 Sep. 0.0293 0.0258 0.0277
07:01-08:00, Wed., 01 Sep. 0.0298 0.0257 0.0278
06:01-07:00, Wed., 01 Sep. 0.0288 0.0255 0.0274
05:01-06:00, Wed., 01 Sep. 0.0297 0.0255 0.0276
04:01-05:00, Wed., 01 Sep. 0.0292 0.0260 0.0276
03:01-04:00, Wed., 01 Sep. 0.0298 0.0259 0.0275
02:01-03:00, Wed., 01 Sep. 0.0297 0.0256 0.0276
01:01-02:00, Wed., 01 Sep. 0.0303 0.0265 0.0284
00:01-01:00, Wed., 01 Sep. 0.0346 0.0279 0.0314
23:01-24:00, Tue., 31 Aug. 0.0430 0.0334 0.0381
22:01-23:00, Tue., 31 Aug. 0.0425 0.0348 0.0381
21:01-22:00, Tue., 31 Aug. 0.0638 0.0393 0.0506
20:01-21:00, Tue., 31 Aug. 0.0670 0.0476 0.0586
19:01-20:00, Tue., 31 Aug. 0.0511 0.0277 0.0350
18:01-19:00, Tue., 31 Aug. 0.0308 0.0274 0.0291
17:01-18:00, Tue., 31 Aug. 0.0314 0.0275 0.0293
16:01-17:00, Tue., 31 Aug. 0.0317 0.0277 0.0295
15:01-16:00, Tue., 31 Aug. 0.0345 0.0290 0.0314
14:01-15:00, Tue., 31 Aug. 0.0357 0.0270 0.0314
13:01-14:00, Tue., 31 Aug. 0.0313 0.0274 0.0293
12:01-13:00, Tue., 31 Aug. 0.0316 0.0270 0.0291
11:01-12:00, Tue., 31 Aug. 0.0311 0.0272 0.0290
10:01-11:00, Tue., 31 Aug. 0.0320 0.0266 0.0292
09:01-10:00, Tue., 31 Aug. 0.0312 0.0277 0.0290
08:01-09:00, Tue., 31 Aug. 0.0303 0.0274 0.0292
07:01-08:00, Tue., 31 Aug. 0.0305 0.0269 0.0290
06:01-07:00, Tue., 31 Aug. 0.0312 0.0270 0.0290
05:01-06:00, Tue., 31 Aug. 0.0307 0.0270 0.0289
04:01-05:00, Tue., 31 Aug. 0.0305 0.0277 0.0291
03:01-04:00, Tue., 31 Aug. 0.0310 0.0254 0.0290
02:01-03:00, Tue., 31 Aug. 0.0308 0.0270 0.0291
01:01-02:00, Tue., 31 Aug. 0.0309 0.0278 0.0291
00:01-01:00, Tue., 31 Aug. 0.0309 0.0275 0.0291
23:01-24:00, Mon., 30 Aug. 0.0309 0.0264 0.0290
22:01-23:00, Mon., 30 Aug. 0.0313 0.0274 0.0291
21:01-22:00, Mon., 30 Aug. 0.0321 0.0275 0.0293
20:01-21:00, Mon., 30 Aug. 0.0309 0.0273 0.0291
19:01-20:00, Mon., 30 Aug. 0.0302 0.0271 0.0289
18:01-19:00, Mon., 30 Aug. 0.0322 0.0275 0.0292
17:01-18:00, Mon., 30 Aug. 0.0311 0.0264 0.0290
16:01-17:00, Mon., 30 Aug. 0.0308 0.0268 0.0288
15:01-16:00, Mon., 30 Aug. 0.0313 0.0269 0.0292
14:01-15:00, Mon., 30 Aug. 0.0303 0.0271 0.0288
13:01-14:00, Mon., 30 Aug. 0.0311 0.0266 0.0292
12:01-13:00, Mon., 30 Aug. 0.0310 0.0271 0.0291
11:01-12:00, Mon., 30 Aug. 0.0304 0.0275 0.0287
10:01-11:00, Mon., 30 Aug. 0.0305 0.0265 0.0288
09:01-10:00, Mon., 30 Aug. 0.0315 0.0269 0.0288
08:01-09:00, Mon., 30 Aug. 0.0307 0.0269 0.0289
07:01-08:00, Mon., 30 Aug. 0.0310 0.0271 0.0291
06:01-07:00, Mon., 30 Aug. 0.0307 0.0276 0.0293
05:01-06:00, Mon., 30 Aug. 0.0309 0.0261 0.0287
04:01-05:00, Mon., 30 Aug. 0.0301 0.0265 0.0286
03:01-04:00, Mon., 30 Aug. 0.0307 0.0269 0.0286
02:01-03:00, Mon., 30 Aug. 0.0311 0.0264 0.0287
01:01-02:00, Mon., 30 Aug. 0.0305 0.0263 0.0285
00:01-01:00, Mon., 30 Aug. 0.0302 0.0263 0.0285