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
10:01-11:00, Sat., 07 Mar. 0.0317 0.0265 0.0295
09:01-10:00, Sat., 07 Mar. 0.0312 0.0267 0.0292
08:01-09:00, Sat., 07 Mar. 0.0308 0.0271 0.0291
07:01-08:00, Sat., 07 Mar. 0.0315 0.0263 0.0288
06:01-07:00, Sat., 07 Mar. 0.0311 0.0273 0.0289
05:01-06:00, Sat., 07 Mar. 0.0316 0.0266 0.0295
04:01-05:00, Sat., 07 Mar. 0.0343 0.0289 0.0312
03:01-04:00, Sat., 07 Mar. 0.0369 0.0318 0.0343
02:01-03:00, Sat., 07 Mar. 0.0359 0.0270 0.0318
01:01-02:00, Sat., 07 Mar. 0.0314 0.0270 0.0288
00:01-01:00, Sat., 07 Mar. 0.0310 0.0262 0.0290
23:01-24:00, Fri., 06 Mar. 0.0311 0.0260 0.0287
22:01-23:00, Fri., 06 Mar. 0.0308 0.0266 0.0287
21:01-22:00, Fri., 06 Mar. 0.0308 0.0268 0.0288
20:01-21:00, Fri., 06 Mar. 0.0308 0.0263 0.0287
19:01-20:00, Fri., 06 Mar. 0.0308 0.0269 0.0285
18:01-19:00, Fri., 06 Mar. 0.0308 0.0252 0.0282
17:01-18:00, Fri., 06 Mar. 0.0302 0.0264 0.0284
16:01-17:00, Fri., 06 Mar. 0.0307 0.0264 0.0285
15:01-16:00, Fri., 06 Mar. 0.0315 0.0269 0.0288
14:01-15:00, Fri., 06 Mar. 0.0313 0.0264 0.0285
13:01-14:00, Fri., 06 Mar. 0.0302 0.0269 0.0285
12:01-13:00, Fri., 06 Mar. 0.0307 0.0265 0.0287
11:01-12:00, Fri., 06 Mar. 0.0316 0.0269 0.0287
10:01-11:00, Fri., 06 Mar. 0.0307 0.0262 0.0289
09:01-10:00, Fri., 06 Mar. 0.0311 0.0266 0.0289
08:01-09:00, Fri., 06 Mar. 0.0314 0.0269 0.0287
07:01-08:00, Fri., 06 Mar. 0.0311 0.0267 0.0286
06:01-07:00, Fri., 06 Mar. 0.0299 0.0264 0.0284
05:01-06:00, Fri., 06 Mar. 0.0302 0.0263 0.0282
04:01-05:00, Fri., 06 Mar. 0.0304 0.0253 0.0284
03:01-04:00, Fri., 06 Mar. 0.0298 0.0261 0.0280
02:01-03:00, Fri., 06 Mar. 0.0298 0.0262 0.0281
01:01-02:00, Fri., 06 Mar. 0.0304 0.0262 0.0282
00:01-01:00, Fri., 06 Mar. 0.0308 0.0261 0.0283
23:01-24:00, Thu., 05 Mar. 0.0305 0.0264 0.0284
22:01-23:00, Thu., 05 Mar. 0.0302 0.0263 0.0283
21:01-22:00, Thu., 05 Mar. 0.0306 0.0268 0.0284
20:01-21:00, Thu., 05 Mar. 0.0301 0.0251 0.0281
19:01-20:00, Thu., 05 Mar. 0.0298 0.0265 0.0281
18:01-19:00, Thu., 05 Mar. 0.0300 0.0264 0.0279
17:01-18:00, Thu., 05 Mar. 0.0303 0.0257 0.0280
16:01-17:00, Thu., 05 Mar. 0.0302 0.0264 0.0283
15:01-16:00, Thu., 05 Mar. 0.0297 0.0267 0.0283
14:01-15:00, Thu., 05 Mar. 0.0304 0.0265 0.0283
13:01-14:00, Thu., 05 Mar. 0.0309 0.0268 0.0285
12:01-13:00, Thu., 05 Mar. 0.0304 0.0268 0.0284
11:01-12:00, Thu., 05 Mar. 0.0308 0.0254 0.0284
10:01-11:00, Thu., 05 Mar. 0.0308 0.0267 0.0286
09:01-10:00, Thu., 05 Mar. 0.0303 0.0261 0.0286
08:01-09:00, Thu., 05 Mar. 0.0308 0.0263 0.0285
07:01-08:00, Thu., 05 Mar. 0.0303 0.0269 0.0283
06:01-07:00, Thu., 05 Mar. 0.0300 0.0260 0.0280
05:01-06:00, Thu., 05 Mar. 0.0303 0.0263 0.0286
04:01-05:00, Thu., 05 Mar. 0.0308 0.0262 0.0286
03:01-04:00, Thu., 05 Mar. 0.0312 0.0268 0.0286
02:01-03:00, Thu., 05 Mar. 0.0308 0.0259 0.0282
01:01-02:00, Thu., 05 Mar. 0.0303 0.0264 0.0283
00:01-01:00, Thu., 05 Mar. 0.0309 0.0258 0.0285
23:01-24:00, Wed., 04 Mar. 0.0308 0.0265 0.0285
22:01-23:00, Wed., 04 Mar. 0.0301 0.0266 0.0284
21:01-22:00, Wed., 04 Mar. 0.0307 0.0270 0.0286
20:01-21:00, Wed., 04 Mar. 0.0304 0.0267 0.0285
19:01-20:00, Wed., 04 Mar. 0.0316 0.0266 0.0284
18:01-19:00, Wed., 04 Mar. 0.0306 0.0263 0.0285
17:01-18:00, Wed., 04 Mar. 0.0302 0.0266 0.0284
16:01-17:00, Wed., 04 Mar. 0.0306 0.0256 0.0282
15:01-16:00, Wed., 04 Mar. 0.0310 0.0263 0.0284
14:01-15:00, Wed., 04 Mar. 0.0304 0.0260 0.0285
13:01-14:00, Wed., 04 Mar. 0.0402 0.0268 0.0286
12:01-13:00, Wed., 04 Mar. 0.0304 0.0258 0.0285
11:01-12:00, Wed., 04 Mar. 0.0314 0.0267 0.0289
10:01-11:00, Wed., 04 Mar. 0.0323 0.0267 0.0298
09:01-10:00, Wed., 04 Mar. 0.0345 0.0297 0.0319
08:01-09:00, Wed., 04 Mar. 0.0374 0.0317 0.0351
07:01-08:00, Wed., 04 Mar. 0.0398 0.0331 0.0362
06:01-07:00, Wed., 04 Mar. 0.0401 0.0327 0.0353
05:01-06:00, Wed., 04 Mar. 0.0404 0.0344 0.0375
04:01-05:00, Wed., 04 Mar. 0.0435 0.0377 0.0406
03:01-04:00, Wed., 04 Mar. 0.0443 0.0394 0.0416
02:01-03:00, Wed., 04 Mar. 0.0513 0.0420 0.0467
01:01-02:00, Wed., 04 Mar. 0.0537 0.0461 0.0507
00:01-01:00, Wed., 04 Mar. 0.0538 0.0454 0.0500
23:01-24:00, Tue., 03 Mar. 0.0466 0.0352 0.0400
22:01-23:00, Tue., 03 Mar. 0.0513 0.0403 0.0464
21:01-22:00, Tue., 03 Mar. 0.0529 0.0428 0.0475
20:01-21:00, Tue., 03 Mar. 0.0494 0.0402 0.0441
19:01-20:00, Tue., 03 Mar. 0.0526 0.0459 0.0495
18:01-19:00, Tue., 03 Mar. 0.0501 0.0442 0.0468
17:01-18:00, Tue., 03 Mar. 0.0482 0.0425 0.0457
16:01-17:00, Tue., 03 Mar. 0.0466 0.0380 0.0423
15:01-16:00, Tue., 03 Mar. 0.0424 0.0343 0.0372
14:01-15:00, Tue., 03 Mar. 0.0386 0.0339 0.0363
13:01-14:00, Tue., 03 Mar. 0.0420 0.0345 0.0384
12:01-13:00, Tue., 03 Mar. 0.0419 0.0374 0.0392
11:01-12:00, Tue., 03 Mar. 0.0421 0.0376 0.0400
10:01-11:00, Tue., 03 Mar. 0.0435 0.0372 0.0403
09:01-10:00, Tue., 03 Mar. 0.0418 0.0345 0.0372
08:01-09:00, Tue., 03 Mar. 0.0388 0.0326 0.0359
07:01-08:00, Tue., 03 Mar. 0.0363 0.0322 0.0343
06:01-07:00, Tue., 03 Mar. 0.0346 0.0300 0.0326
05:01-06:00, Tue., 03 Mar. 0.0332 0.0270 0.0302
04:01-05:00, Tue., 03 Mar. 0.0317 0.0272 0.0291
03:01-04:00, Tue., 03 Mar. 0.0318 0.0273 0.0289
02:01-03:00, Tue., 03 Mar. 0.0321 0.0267 0.0291
01:01-02:00, Tue., 03 Mar. 0.0306 0.0271 0.0291
00:01-01:00, Tue., 03 Mar. 0.0310 0.0268 0.0291
23:01-24:00, Mon., 02 Mar. 0.0315 0.0276 0.0291
22:01-23:00, Mon., 02 Mar. 0.0315 0.0262 0.0290
21:01-22:00, Mon., 02 Mar. 0.0315 0.0275 0.0290
20:01-21:00, Mon., 02 Mar. 0.0308 0.0266 0.0286
19:01-20:00, Mon., 02 Mar. 0.0298 0.0270 0.0286
18:01-19:00, Mon., 02 Mar. 0.0304 0.0264 0.0284
17:01-18:00, Mon., 02 Mar. 0.0310 0.0267 0.0287
16:01-17:00, Mon., 02 Mar. 0.0321 0.0255 0.0284
15:01-16:00, Mon., 02 Mar. 0.0308 0.0264 0.0288
14:01-15:00, Mon., 02 Mar. 0.0313 0.0265 0.0287
13:01-14:00, Mon., 02 Mar. 0.0318 0.0262 0.0289
12:01-13:00, Mon., 02 Mar. 0.0318 0.0274 0.0292
11:01-12:00, Mon., 02 Mar. 0.0314 0.0271 0.0293
10:01-11:00, Mon., 02 Mar. 0.0311 0.0276 0.0292
09:01-10:00, Mon., 02 Mar. 0.0316 0.0270 0.0295
08:01-09:00, Mon., 02 Mar. 0.0316 0.0276 0.0293
07:01-08:00, Mon., 02 Mar. 0.0317 0.0269 0.0293
06:01-07:00, Mon., 02 Mar. 0.0319 0.0269 0.0291
05:01-06:00, Mon., 02 Mar. 0.0318 0.0270 0.0293
04:01-05:00, Mon., 02 Mar. 0.0317 0.0277 0.0294
03:01-04:00, Mon., 02 Mar. 0.0315 0.0256 0.0293
02:01-03:00, Mon., 02 Mar. 0.0312 0.0274 0.0294
01:01-02:00, Mon., 02 Mar. 0.0308 0.0271 0.0291
00:01-01:00, Mon., 02 Mar. 0.0309 0.0272 0.0290
23:01-24:00, Sun., 01 Mar. 0.0313 0.0261 0.0290
22:01-23:00, Sun., 01 Mar. 0.0315 0.0273 0.0288
21:01-22:00, Sun., 01 Mar. 0.0308 0.0259 0.0285
20:01-21:00, Sun., 01 Mar. 0.0306 0.0270 0.0286
19:01-20:00, Sun., 01 Mar. 0.0308 0.0261 0.0286
18:01-19:00, Sun., 01 Mar. 0.0305 0.0268 0.0285
17:01-18:00, Sun., 01 Mar. 0.0305 0.0266 0.0286
16:01-17:00, Sun., 01 Mar. 0.0308 0.0261 0.0289
15:01-16:00, Sun., 01 Mar. 0.0315 0.0260 0.0288
14:01-15:00, Sun., 01 Mar. 0.0310 0.0270 0.0287
13:01-14:00, Sun., 01 Mar. 0.0318 0.0257 0.0293
12:01-13:00, Sun., 01 Mar. 0.0302 0.0270 0.0288
11:01-12:00, Sun., 01 Mar. 0.0314 0.0280 0.0294
10:01-11:00, Sun., 01 Mar. 0.0309 0.0268 0.0289
09:01-10:00, Sun., 01 Mar. 0.0315 0.0270 0.0290
08:01-09:00, Sun., 01 Mar. 0.0311 0.0270 0.0289
07:01-08:00, Sun., 01 Mar. 0.0308 0.0261 0.0289
06:01-07:00, Sun., 01 Mar. 0.0305 0.0270 0.0286
05:01-06:00, Sun., 01 Mar. 0.0308 0.0257 0.0284
04:01-05:00, Sun., 01 Mar. 0.0311 0.0270 0.0287
03:01-04:00, Sun., 01 Mar. 0.0304 0.0270 0.0286
02:01-03:00, Sun., 01 Mar. 0.0308 0.0266 0.0287
01:01-02:00, Sun., 01 Mar. 0.0318 0.0269 0.0287
00:01-01:00, Sun., 01 Mar. 0.0311 0.0258 0.0285
23:01-24:00, Sat., 28 Feb. 0.0324 0.0263 0.0287
22:01-23:00, Sat., 28 Feb. 0.0310 0.0271 0.0290
21:01-22:00, Sat., 28 Feb. 0.0313 0.0270 0.0291
20:01-21:00, Sat., 28 Feb. 0.0308 0.0270 0.0287
19:01-20:00, Sat., 28 Feb. 0.0312 0.0266 0.0286
18:01-19:00, Sat., 28 Feb. 0.0302 0.0257 0.0285
17:01-18:00, Sat., 28 Feb. 0.0304 0.0263 0.0286
16:01-17:00, Sat., 28 Feb. 0.0306 0.0266 0.0286
15:01-16:00, Sat., 28 Feb. 0.0308 0.0265 0.0289
14:01-15:00, Sat., 28 Feb. 0.0320 0.0271 0.0291
13:01-14:00, Sat., 28 Feb. 0.0318 0.0275 0.0290
12:01-13:00, Sat., 28 Feb. 0.0308 0.0270 0.0292
11:01-12:00, Sat., 28 Feb. 0.0318 0.0267 0.0292
10:01-11:00, Sat., 28 Feb. 0.0315 0.0275 0.0294
09:01-10:00, Sat., 28 Feb. 0.0314 0.0263 0.0293
08:01-09:00, Sat., 28 Feb. 0.0315 0.0268 0.0289
07:01-08:00, Sat., 28 Feb. 0.0319 0.0271 0.0288
06:01-07:00, Sat., 28 Feb. 0.0307 0.0269 0.0286
05:01-06:00, Sat., 28 Feb. 0.0308 0.0270 0.0289
04:01-05:00, Sat., 28 Feb. 0.0306 0.0270 0.0285
03:01-04:00, Sat., 28 Feb. 0.0305 0.0269 0.0284
02:01-03:00, Sat., 28 Feb. 0.0313 0.0262 0.0287
01:01-02:00, Sat., 28 Feb. 0.0306 0.0250 0.0287
00:01-01:00, Sat., 28 Feb. 0.0309 0.0265 0.0286
23:01-24:00, Fri., 27 Feb. 0.0304 0.0272 0.0286
22:01-23:00, Fri., 27 Feb. 0.0308 0.0263 0.0286
21:01-22:00, Fri., 27 Feb. 0.0302 0.0263 0.0283
20:01-21:00, Fri., 27 Feb. 0.0301 0.0267 0.0285
19:01-20:00, Fri., 27 Feb. 0.0303 0.0258 0.0278
18:01-19:00, Fri., 27 Feb. 0.0309 0.0267 0.0283
17:01-18:00, Fri., 27 Feb. 0.0303 0.0259 0.0285
16:01-17:00, Fri., 27 Feb. 0.0313 0.0266 0.0283
15:01-16:00, Fri., 27 Feb. 0.0294 0.0261 0.0282
14:01-15:00, Fri., 27 Feb. 0.0311 0.0255 0.0284
13:01-14:00, Fri., 27 Feb. 0.0308 0.0260 0.0284
12:01-13:00, Fri., 27 Feb. 0.0308 0.0264 0.0286
11:01-12:00, Fri., 27 Feb. 0.0308 0.0259 0.0284
10:01-11:00, Fri., 27 Feb. 0.0304 0.0266 0.0286
09:01-10:00, Fri., 27 Feb. 0.0304 0.0261 0.0283
08:01-09:00, Fri., 27 Feb. 0.0300 0.0259 0.0279
07:01-08:00, Fri., 27 Feb. 0.0302 0.0263 0.0282
06:01-07:00, Fri., 27 Feb. 0.0303 0.0258 0.0281
05:01-06:00, Fri., 27 Feb. 0.0309 0.0266 0.0285
04:01-05:00, Fri., 27 Feb. 0.0306 0.0251 0.0284
03:01-04:00, Fri., 27 Feb. 0.0304 0.0270 0.0287
02:01-03:00, Fri., 27 Feb. 0.0298 0.0266 0.0285
01:01-02:00, Fri., 27 Feb. 0.0307 0.0265 0.0285
00:01-01:00, Fri., 27 Feb. 0.0302 0.0268 0.0285
23:01-24:00, Thu., 26 Feb. 0.0308 0.0265 0.0286
22:01-23:00, Thu., 26 Feb. 0.0306 0.0263 0.0285
21:01-22:00, Thu., 26 Feb. 0.0308 0.0272 0.0285
20:01-21:00, Thu., 26 Feb. 0.0304 0.0268 0.0285
19:01-20:00, Thu., 26 Feb. 0.0309 0.0271 0.0286
18:01-19:00, Thu., 26 Feb. 0.0305 0.0265 0.0284
17:01-18:00, Thu., 26 Feb. 0.0304 0.0252 0.0282
16:01-17:00, Thu., 26 Feb. 0.0303 0.0260 0.0284
15:01-16:00, Thu., 26 Feb. 0.0308 0.0261 0.0285
14:01-15:00, Thu., 26 Feb. 0.0309 0.0263 0.0284
13:01-14:00, Thu., 26 Feb. 0.0307 0.0267 0.0283
12:01-13:00, Thu., 26 Feb. 0.0304 0.0259 0.0283
11:01-12:00, Thu., 26 Feb. 0.0298 0.0263 0.0282
10:01-11:00, Thu., 26 Feb. 0.0308 0.0255 0.0282
09:01-10:00, Thu., 26 Feb. 0.0300 0.0267 0.0282
08:01-09:00, Thu., 26 Feb. 0.0303 0.0263 0.0280
07:01-08:00, Thu., 26 Feb. 0.0308 0.0258 0.0279
06:01-07:00, Thu., 26 Feb. 0.0307 0.0255 0.0280
05:01-06:00, Thu., 26 Feb. 0.0301 0.0259 0.0281
04:01-05:00, Thu., 26 Feb. 0.0312 0.0270 0.0291
03:01-04:00, Thu., 26 Feb. 0.0334 0.0278 0.0306
02:01-03:00, Thu., 26 Feb. 0.0346 0.0290 0.0322
01:01-02:00, Thu., 26 Feb. 0.0332 0.0278 0.0303
00:01-01:00, Thu., 26 Feb. 0.0350 0.0301 0.0327
23:01-24:00, Wed., 25 Feb. 0.0386 0.0316 0.0358
22:01-23:00, Wed., 25 Feb. 0.0402 0.0339 0.0370
21:01-22:00, Wed., 25 Feb. 0.0405 0.0353 0.0377
20:01-21:00, Wed., 25 Feb. 0.0402 0.0338 0.0367
19:01-20:00, Wed., 25 Feb. 0.0372 0.0329 0.0348
18:01-19:00, Wed., 25 Feb. 0.0366 0.0319 0.0347
17:01-18:00, Wed., 25 Feb. 0.0348 0.0304 0.0331
16:01-17:00, Wed., 25 Feb. 0.0396 0.0318 0.0355
15:01-16:00, Wed., 25 Feb. 0.0418 0.0359 0.0392
14:01-15:00, Wed., 25 Feb. 0.0428 0.0371 0.0402
13:01-14:00, Wed., 25 Feb. 0.0407 0.0350 0.0382
12:01-13:00, Wed., 25 Feb. 0.0402 0.0356 0.0377
11:01-12:00, Wed., 25 Feb. 0.0410 0.0343 0.0377