Radiation doses in the air / Measurement results by the hour (Adachi)

We continuously measure radiation doses in the air (air absorbed doses per hour) at monitoring posts. Measurement results can be obtained by the minute, and we gather measurement data and then display them by the hour or by the day.

The maximum value indicates the largest value measured in each time slot (during the hour or during the day), the minimum value the smallest value measured in each time slot, and the average value is the average value for each time slot.

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, Tue., 07 Apr. 0.0322 0.0273 0.0296
22:01-23:00, Tue., 07 Apr. 0.0338 0.0281 0.0309
21:01-22:00, Tue., 07 Apr. 0.0309 0.0274 0.0290
20:01-21:00, Tue., 07 Apr. 0.0318 0.0279 0.0292
19:01-20:00, Tue., 07 Apr. 0.0316 0.0274 0.0293
18:01-19:00, Tue., 07 Apr. 0.0317 0.0273 0.0292
17:01-18:00, Tue., 07 Apr. 0.0308 0.0266 0.0288
16:01-17:00, Tue., 07 Apr. 0.0308 0.0264 0.0290
15:01-16:00, Tue., 07 Apr. 0.0308 0.0269 0.0288
14:01-15:00, Tue., 07 Apr. 0.0317 0.0279 0.0295
13:01-14:00, Tue., 07 Apr. 0.0352 0.0287 0.0320
12:01-13:00, Tue., 07 Apr. 0.0397 0.0319 0.0355
11:01-12:00, Tue., 07 Apr. 0.0397 0.0303 0.0351
10:01-11:00, Tue., 07 Apr. 0.0311 0.0265 0.0286
09:01-10:00, Tue., 07 Apr. 0.0300 0.0257 0.0280
08:01-09:00, Tue., 07 Apr. 0.0320 0.0266 0.0288
07:01-08:00, Tue., 07 Apr. 0.0306 0.0270 0.0288
06:01-07:00, Tue., 07 Apr. 0.0304 0.0256 0.0283
05:01-06:00, Tue., 07 Apr. 0.0308 0.0273 0.0289
04:01-05:00, Tue., 07 Apr. 0.0306 0.0268 0.0289
03:01-04:00, Tue., 07 Apr. 0.0313 0.0269 0.0288
02:01-03:00, Tue., 07 Apr. 0.0308 0.0267 0.0289
01:01-02:00, Tue., 07 Apr. 0.0309 0.0260 0.0288
00:01-01:00, Tue., 07 Apr. 0.0318 0.0270 0.0288
23:01-24:00, Mon., 06 Apr. 0.0310 0.0258 0.0286
22:01-23:00, Mon., 06 Apr. 0.0307 0.0267 0.0286
21:01-22:00, Mon., 06 Apr. 0.0308 0.0263 0.0286
20:01-21:00, Mon., 06 Apr. 0.0302 0.0259 0.0284
19:01-20:00, Mon., 06 Apr. 0.0311 0.0262 0.0286
18:01-19:00, Mon., 06 Apr. 0.0308 0.0267 0.0287
17:01-18:00, Mon., 06 Apr. 0.0301 0.0266 0.0286
16:01-17:00, Mon., 06 Apr. 0.0306 0.0261 0.0283
15:01-16:00, Mon., 06 Apr. 0.0307 0.0262 0.0282
14:01-15:00, Mon., 06 Apr. 0.0307 0.0265 0.0286
13:01-14:00, Mon., 06 Apr. 0.0308 0.0263 0.0287
12:01-13:00, Mon., 06 Apr. 0.0310 0.0264 0.0284
11:01-12:00, Mon., 06 Apr. 0.0298 0.0265 0.0283
10:01-11:00, Mon., 06 Apr. 0.0301 0.0266 0.0283
09:01-10:00, Mon., 06 Apr. 0.0304 0.0263 0.0282
08:01-09:00, Mon., 06 Apr. 0.0305 0.0266 0.0283
07:01-08:00, Mon., 06 Apr. 0.0311 0.0258 0.0282
06:01-07:00, Mon., 06 Apr. 0.0296 0.0259 0.0278
05:01-06:00, Mon., 06 Apr. 0.0308 0.0262 0.0282
04:01-05:00, Mon., 06 Apr. 0.0309 0.0258 0.0283
03:01-04:00, Mon., 06 Apr. 0.0309 0.0262 0.0286
02:01-03:00, Mon., 06 Apr. 0.0312 0.0266 0.0288
01:01-02:00, Mon., 06 Apr. 0.0309 0.0264 0.0291
00:01-01:00, Mon., 06 Apr. 0.0310 0.0269 0.0289
23:01-24:00, Sun., 05 Apr. 0.0304 0.0267 0.0287
22:01-23:00, Sun., 05 Apr. 0.0317 0.0265 0.0286
21:01-22:00, Sun., 05 Apr. 0.0311 0.0264 0.0284
20:01-21:00, Sun., 05 Apr. 0.0303 0.0267 0.0283
19:01-20:00, Sun., 05 Apr. 0.0304 0.0266 0.0287
18:01-19:00, Sun., 05 Apr. 0.0322 0.0266 0.0290
17:01-18:00, Sun., 05 Apr. 0.0321 0.0273 0.0291
16:01-17:00, Sun., 05 Apr. 0.0309 0.0264 0.0287
15:01-16:00, Sun., 05 Apr. 0.0306 0.0251 0.0286
14:01-15:00, Sun., 05 Apr. 0.0306 0.0266 0.0285
13:01-14:00, Sun., 05 Apr. 0.0311 0.0260 0.0286
12:01-13:00, Sun., 05 Apr. 0.0313 0.0272 0.0286
11:01-12:00, Sun., 05 Apr. 0.0317 0.0276 0.0287
10:01-11:00, Sun., 05 Apr. 0.0318 0.0263 0.0288
09:01-10:00, Sun., 05 Apr. 0.0307 0.0266 0.0284
08:01-09:00, Sun., 05 Apr. 0.0308 0.0264 0.0285
07:01-08:00, Sun., 05 Apr. 0.0309 0.0270 0.0285
06:01-07:00, Sun., 05 Apr. 0.0308 0.0263 0.0283
05:01-06:00, Sun., 05 Apr. 0.0305 0.0267 0.0283
04:01-05:00, Sun., 05 Apr. 0.0303 0.0268 0.0286
03:01-04:00, Sun., 05 Apr. 0.0322 0.0274 0.0292
02:01-03:00, Sun., 05 Apr. 0.0348 0.0287 0.0319
01:01-02:00, Sun., 05 Apr. 0.0405 0.0332 0.0368
00:01-01:00, Sun., 05 Apr. 0.0412 0.0358 0.0384
23:01-24:00, Sat., 04 Apr. 0.0378 0.0315 0.0346
22:01-23:00, Sat., 04 Apr. 0.0364 0.0308 0.0333
21:01-22:00, Sat., 04 Apr. 0.0349 0.0283 0.0315
20:01-21:00, Sat., 04 Apr. 0.0331 0.0287 0.0310
19:01-20:00, Sat., 04 Apr. 0.0329 0.0281 0.0303
18:01-19:00, Sat., 04 Apr. 0.0307 0.0263 0.0283
17:01-18:00, Sat., 04 Apr. 0.0302 0.0260 0.0281
16:01-17:00, Sat., 04 Apr. 0.0302 0.0262 0.0281
15:01-16:00, Sat., 04 Apr. 0.0314 0.0270 0.0291
14:01-15:00, Sat., 04 Apr. 0.0359 0.0294 0.0323
13:01-14:00, Sat., 04 Apr. 0.0377 0.0301 0.0339
12:01-13:00, Sat., 04 Apr. 0.0330 0.0294 0.0311
11:01-12:00, Sat., 04 Apr. 0.0355 0.0304 0.0329
10:01-11:00, Sat., 04 Apr. 0.0333 0.0266 0.0294
09:01-10:00, Sat., 04 Apr. 0.0308 0.0256 0.0286
08:01-09:00, Sat., 04 Apr. 0.0310 0.0265 0.0284
07:01-08:00, Sat., 04 Apr. 0.0302 0.0261 0.0282
06:01-07:00, Sat., 04 Apr. 0.0304 0.0261 0.0279
05:01-06:00, Sat., 04 Apr. 0.0315 0.0264 0.0285
04:01-05:00, Sat., 04 Apr. 0.0307 0.0264 0.0284
03:01-04:00, Sat., 04 Apr. 0.0306 0.0268 0.0285
02:01-03:00, Sat., 04 Apr. 0.0308 0.0264 0.0283
01:01-02:00, Sat., 04 Apr. 0.0311 0.0259 0.0281
00:01-01:00, Sat., 04 Apr. 0.0304 0.0253 0.0283
23:01-24:00, Fri., 03 Apr. 0.0300 0.0266 0.0283
22:01-23:00, Fri., 03 Apr. 0.0301 0.0270 0.0286
21:01-22:00, Fri., 03 Apr. 0.0302 0.0256 0.0280
20:01-21:00, Fri., 03 Apr. 0.0301 0.0264 0.0282
19:01-20:00, Fri., 03 Apr. 0.0305 0.0258 0.0281
18:01-19:00, Fri., 03 Apr. 0.0301 0.0259 0.0279
17:01-18:00, Fri., 03 Apr. 0.0296 0.0261 0.0280
16:01-17:00, Fri., 03 Apr. 0.0301 0.0266 0.0283
15:01-16:00, Fri., 03 Apr. 0.0300 0.0261 0.0280
14:01-15:00, Fri., 03 Apr. 0.0298 0.0263 0.0281
13:01-14:00, Fri., 03 Apr. 0.0304 0.0266 0.0281
12:01-13:00, Fri., 03 Apr. 0.0308 0.0259 0.0283
11:01-12:00, Fri., 03 Apr. 0.0301 0.0263 0.0282
10:01-11:00, Fri., 03 Apr. 0.0310 0.0252 0.0285
09:01-10:00, Fri., 03 Apr. 0.0298 0.0260 0.0280
08:01-09:00, Fri., 03 Apr. 0.0306 0.0263 0.0282
07:01-08:00, Fri., 03 Apr. 0.0303 0.0257 0.0282
06:01-07:00, Fri., 03 Apr. 0.0301 0.0248 0.0280
05:01-06:00, Fri., 03 Apr. 0.0299 0.0263 0.0281
04:01-05:00, Fri., 03 Apr. 0.0299 0.0265 0.0281
03:01-04:00, Fri., 03 Apr. 0.0304 0.0262 0.0282
02:01-03:00, Fri., 03 Apr. 0.0296 0.0255 0.0279
01:01-02:00, Fri., 03 Apr. 0.0308 0.0264 0.0285
00:01-01:00, Fri., 03 Apr. 0.0305 0.0263 0.0280
23:01-24:00, Thu., 02 Apr. 0.0309 0.0259 0.0280
22:01-23:00, Thu., 02 Apr. 0.0305 0.0261 0.0280
21:01-22:00, Thu., 02 Apr. 0.0300 0.0260 0.0279
20:01-21:00, Thu., 02 Apr. 0.0312 0.0250 0.0280
19:01-20:00, Thu., 02 Apr. 0.0297 0.0260 0.0279
18:01-19:00, Thu., 02 Apr. 0.0297 0.0253 0.0278
17:01-18:00, Thu., 02 Apr. 0.0308 0.0259 0.0280
16:01-17:00, Thu., 02 Apr. 0.0308 0.0261 0.0284
15:01-16:00, Thu., 02 Apr. 0.0308 0.0262 0.0283
14:01-15:00, Thu., 02 Apr. 0.0308 0.0266 0.0287
13:01-14:00, Thu., 02 Apr. 0.0315 0.0272 0.0291
12:01-13:00, Thu., 02 Apr. 0.0301 0.0269 0.0289
11:01-12:00, Thu., 02 Apr. 0.0317 0.0276 0.0295
10:01-11:00, Thu., 02 Apr. 0.0347 0.0289 0.0322
09:01-10:00, Thu., 02 Apr. 0.0369 0.0324 0.0344
08:01-09:00, Thu., 02 Apr. 0.0391 0.0345 0.0364
07:01-08:00, Thu., 02 Apr. 0.0391 0.0337 0.0365
06:01-07:00, Thu., 02 Apr. 0.0386 0.0334 0.0358
05:01-06:00, Thu., 02 Apr. 0.0429 0.0350 0.0395
04:01-05:00, Thu., 02 Apr. 0.0496 0.0414 0.0451
03:01-04:00, Thu., 02 Apr. 0.0463 0.0373 0.0422
02:01-03:00, Thu., 02 Apr. 0.0476 0.0397 0.0437
01:01-02:00, Thu., 02 Apr. 0.0500 0.0440 0.0467
00:01-01:00, Thu., 02 Apr. 0.0537 0.0452 0.0503
23:01-24:00, Wed., 01 Apr. 0.0530 0.0451 0.0490
22:01-23:00, Wed., 01 Apr. 0.0462 0.0392 0.0433
21:01-22:00, Wed., 01 Apr. 0.0413 0.0353 0.0380
20:01-21:00, Wed., 01 Apr. 0.0419 0.0371 0.0395
19:01-20:00, Wed., 01 Apr. 0.0430 0.0383 0.0405
18:01-19:00, Wed., 01 Apr. 0.0421 0.0353 0.0381
17:01-18:00, Wed., 01 Apr. 0.0412 0.0353 0.0382
16:01-17:00, Wed., 01 Apr. 0.0437 0.0363 0.0402
15:01-16:00, Wed., 01 Apr. 0.0468 0.0404 0.0433
14:01-15:00, Wed., 01 Apr. 0.0459 0.0373 0.0421
13:01-14:00, Wed., 01 Apr. 0.0402 0.0343 0.0366
12:01-13:00, Wed., 01 Apr. 0.0342 0.0290 0.0311
11:01-12:00, Wed., 01 Apr. 0.0312 0.0273 0.0294
10:01-11:00, Wed., 01 Apr. 0.0326 0.0280 0.0300
09:01-10:00, Wed., 01 Apr. 0.0338 0.0295 0.0316
08:01-09:00, Wed., 01 Apr. 0.0318 0.0273 0.0292
07:01-08:00, Wed., 01 Apr. 0.0320 0.0266 0.0289
06:01-07:00, Wed., 01 Apr. 0.0318 0.0262 0.0292
05:01-06:00, Wed., 01 Apr. 0.0311 0.0264 0.0293
04:01-05:00, Wed., 01 Apr. 0.0308 0.0258 0.0287
03:01-04:00, Wed., 01 Apr. 0.0314 0.0256 0.0286
02:01-03:00, Wed., 01 Apr. 0.0302 0.0262 0.0282
01:01-02:00, Wed., 01 Apr. 0.0311 0.0266 0.0290
00:01-01:00, Wed., 01 Apr. 0.0311 0.0270 0.0289
23:01-24:00, Tue., 31 Mar. 0.0327 0.0249 0.0288
22:01-23:00, Tue., 31 Mar. 0.0304 0.0259 0.0284
21:01-22:00, Tue., 31 Mar. 0.0304 0.0264 0.0285
20:01-21:00, Tue., 31 Mar. 0.0316 0.0267 0.0291
19:01-20:00, Tue., 31 Mar. 0.0327 0.0278 0.0302
18:01-19:00, Tue., 31 Mar. 0.0325 0.0277 0.0291
17:01-18:00, Tue., 31 Mar. 0.0315 0.0272 0.0295
16:01-17:00, Tue., 31 Mar. 0.0311 0.0270 0.0296
15:01-16:00, Tue., 31 Mar. 0.0322 0.0273 0.0300
14:01-15:00, Tue., 31 Mar. 0.0329 0.0286 0.0303
13:01-14:00, Tue., 31 Mar. 0.0336 0.0281 0.0305
12:01-13:00, Tue., 31 Mar. 0.0331 0.0270 0.0302
11:01-12:00, Tue., 31 Mar. 0.0306 0.0267 0.0288
10:01-11:00, Tue., 31 Mar. 0.0327 0.0275 0.0293
09:01-10:00, Tue., 31 Mar. 0.0322 0.0264 0.0292
08:01-09:00, Tue., 31 Mar. 0.0304 0.0261 0.0281
07:01-08:00, Tue., 31 Mar. 0.0295 0.0257 0.0279
06:01-07:00, Tue., 31 Mar. 0.0305 0.0259 0.0281
05:01-06:00, Tue., 31 Mar. 0.0303 0.0263 0.0283
04:01-05:00, Tue., 31 Mar. 0.0304 0.0263 0.0284
03:01-04:00, Tue., 31 Mar. 0.0306 0.0262 0.0282
02:01-03:00, Tue., 31 Mar. 0.0301 0.0249 0.0281
01:01-02:00, Tue., 31 Mar. 0.0301 0.0264 0.0284
00:01-01:00, Tue., 31 Mar. 0.0313 0.0256 0.0284
23:01-24:00, Mon., 30 Mar. 0.0308 0.0271 0.0285
22:01-23:00, Mon., 30 Mar. 0.0306 0.0263 0.0285
21:01-22:00, Mon., 30 Mar. 0.0303 0.0256 0.0281
20:01-21:00, Mon., 30 Mar. 0.0308 0.0259 0.0282
19:01-20:00, Mon., 30 Mar. 0.0301 0.0266 0.0281
18:01-19:00, Mon., 30 Mar. 0.0304 0.0264 0.0280
17:01-18:00, Mon., 30 Mar. 0.0301 0.0263 0.0283
16:01-17:00, Mon., 30 Mar. 0.0303 0.0263 0.0282
15:01-16:00, Mon., 30 Mar. 0.0302 0.0263 0.0281
14:01-15:00, Mon., 30 Mar. 0.0301 0.0265 0.0281
13:01-14:00, Mon., 30 Mar. 0.0304 0.0268 0.0285
12:01-13:00, Mon., 30 Mar. 0.0304 0.0263 0.0282
11:01-12:00, Mon., 30 Mar. 0.0307 0.0259 0.0286
10:01-11:00, Mon., 30 Mar. 0.0307 0.0268 0.0283
09:01-10:00, Mon., 30 Mar. 0.0300 0.0252 0.0283
08:01-09:00, Mon., 30 Mar. 0.0311 0.0266 0.0282
07:01-08:00, Mon., 30 Mar. 0.0305 0.0263 0.0282
06:01-07:00, Mon., 30 Mar. 0.0308 0.0266 0.0283
05:01-06:00, Mon., 30 Mar. 0.0306 0.0265 0.0283
04:01-05:00, Mon., 30 Mar. 0.0308 0.0263 0.0284
03:01-04:00, Mon., 30 Mar. 0.0306 0.0263 0.0285
02:01-03:00, Mon., 30 Mar. 0.0310 0.0258 0.0286
01:01-02:00, Mon., 30 Mar. 0.0308 0.0264 0.0285
00:01-01:00, Mon., 30 Mar. 0.0311 0.0270 0.0283
23:01-24:00, Sun., 29 Mar. 0.0302 0.0260 0.0285
22:01-23:00, Sun., 29 Mar. 0.0298 0.0259 0.0281
21:01-22:00, Sun., 29 Mar. 0.0302 0.0267 0.0283
20:01-21:00, Sun., 29 Mar. 0.0312 0.0263 0.0285
19:01-20:00, Sun., 29 Mar. 0.0309 0.0263 0.0283
18:01-19:00, Sun., 29 Mar. 0.0307 0.0256 0.0283
17:01-18:00, Sun., 29 Mar. 0.0307 0.0262 0.0283
16:01-17:00, Sun., 29 Mar. 0.0297 0.0257 0.0276
15:01-16:00, Sun., 29 Mar. 0.0300 0.0254 0.0278
14:01-15:00, Sun., 29 Mar. 0.0296 0.0256 0.0277
13:01-14:00, Sun., 29 Mar. 0.0297 0.0249 0.0276
12:01-13:00, Sun., 29 Mar. 0.0301 0.0253 0.0274
11:01-12:00, Sun., 29 Mar. 0.0297 0.0264 0.0276
10:01-11:00, Sun., 29 Mar. 0.0304 0.0258 0.0277
09:01-10:00, Sun., 29 Mar. 0.0300 0.0263 0.0282
08:01-09:00, Sun., 29 Mar. 0.0314 0.0271 0.0289
07:01-08:00, Sun., 29 Mar. 0.0314 0.0263 0.0291
06:01-07:00, Sun., 29 Mar. 0.0321 0.0259 0.0288
05:01-06:00, Sun., 29 Mar. 0.0311 0.0265 0.0285
04:01-05:00, Sun., 29 Mar. 0.0308 0.0270 0.0288
03:01-04:00, Sun., 29 Mar. 0.0315 0.0263 0.0287
02:01-03:00, Sun., 29 Mar. 0.0314 0.0263 0.0283
01:01-02:00, Sun., 29 Mar. 0.0308 0.0261 0.0282
00:01-01:00, Sun., 29 Mar. 0.0300 0.0266 0.0280