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
21:01-22:00, Sat., 15 Nov. 0.0308 0.0267 0.0292
20:01-21:00, Sat., 15 Nov. 0.0315 0.0276 0.0295
19:01-20:00, Sat., 15 Nov. 0.0315 0.0265 0.0293
18:01-19:00, Sat., 15 Nov. 0.0318 0.0270 0.0294
17:01-18:00, Sat., 15 Nov. 0.0313 0.0273 0.0290
16:01-17:00, Sat., 15 Nov. 0.0310 0.0270 0.0295
15:01-16:00, Sat., 15 Nov. 0.0318 0.0276 0.0297
14:01-15:00, Sat., 15 Nov. 0.0328 0.0279 0.0299
13:01-14:00, Sat., 15 Nov. 0.0337 0.0282 0.0301
12:01-13:00, Sat., 15 Nov. 0.0320 0.0270 0.0299
11:01-12:00, Sat., 15 Nov. 0.0323 0.0275 0.0298
10:01-11:00, Sat., 15 Nov. 0.0316 0.0277 0.0298
09:01-10:00, Sat., 15 Nov. 0.0315 0.0270 0.0296
08:01-09:00, Sat., 15 Nov. 0.0326 0.0263 0.0295
07:01-08:00, Sat., 15 Nov. 0.0313 0.0274 0.0294
06:01-07:00, Sat., 15 Nov. 0.0326 0.0276 0.0299
05:01-06:00, Sat., 15 Nov. 0.0322 0.0278 0.0301
04:01-05:00, Sat., 15 Nov. 0.0325 0.0280 0.0303
03:01-04:00, Sat., 15 Nov. 0.0314 0.0278 0.0299
02:01-03:00, Sat., 15 Nov. 0.0320 0.0278 0.0299
01:01-02:00, Sat., 15 Nov. 0.0323 0.0276 0.0298
00:01-01:00, Sat., 15 Nov. 0.0322 0.0282 0.0299
23:01-24:00, Fri., 14 Nov. 0.0320 0.0270 0.0295
22:01-23:00, Fri., 14 Nov. 0.0315 0.0273 0.0293
21:01-22:00, Fri., 14 Nov. 0.0309 0.0274 0.0294
20:01-21:00, Fri., 14 Nov. 0.0308 0.0275 0.0291
19:01-20:00, Fri., 14 Nov. 0.0315 0.0273 0.0295
18:01-19:00, Fri., 14 Nov. 0.0312 0.0264 0.0293
17:01-18:00, Fri., 14 Nov. 0.0317 0.0272 0.0293
16:01-17:00, Fri., 14 Nov. 0.0317 0.0279 0.0295
15:01-16:00, Fri., 14 Nov. 0.0321 0.0271 0.0297
14:01-15:00, Fri., 14 Nov. 0.0320 0.0273 0.0295
13:01-14:00, Fri., 14 Nov. 0.0316 0.0262 0.0295
12:01-13:00, Fri., 14 Nov. 0.0320 0.0281 0.0298
11:01-12:00, Fri., 14 Nov. 0.0318 0.0273 0.0300
10:01-11:00, Fri., 14 Nov. 0.0325 0.0279 0.0300
09:01-10:00, Fri., 14 Nov. 0.0319 0.0279 0.0303
08:01-09:00, Fri., 14 Nov. 0.0325 0.0283 0.0304
07:01-08:00, Fri., 14 Nov. 0.0334 0.0287 0.0307
06:01-07:00, Fri., 14 Nov. 0.0326 0.0280 0.0304
05:01-06:00, Fri., 14 Nov. 0.0329 0.0294 0.0310
04:01-05:00, Fri., 14 Nov. 0.0338 0.0293 0.0313
03:01-04:00, Fri., 14 Nov. 0.0336 0.0294 0.0313
02:01-03:00, Fri., 14 Nov. 0.0337 0.0294 0.0313
01:01-02:00, Fri., 14 Nov. 0.0336 0.0295 0.0313
00:01-01:00, Fri., 14 Nov. 0.0339 0.0294 0.0314
23:01-24:00, Thu., 13 Nov. 0.0343 0.0294 0.0315
22:01-23:00, Thu., 13 Nov. 0.0335 0.0275 0.0308
21:01-22:00, Thu., 13 Nov. 0.0325 0.0286 0.0307
20:01-21:00, Thu., 13 Nov. 0.0329 0.0288 0.0306
19:01-20:00, Thu., 13 Nov. 0.0329 0.0279 0.0304
18:01-19:00, Thu., 13 Nov. 0.0326 0.0287 0.0303
17:01-18:00, Thu., 13 Nov. 0.0318 0.0283 0.0302
16:01-17:00, Thu., 13 Nov. 0.0326 0.0287 0.0305
15:01-16:00, Thu., 13 Nov. 0.0327 0.0284 0.0304
14:01-15:00, Thu., 13 Nov. 0.0333 0.0288 0.0306
13:01-14:00, Thu., 13 Nov. 0.0336 0.0278 0.0299
12:01-13:00, Thu., 13 Nov. 0.0325 0.0278 0.0303
11:01-12:00, Thu., 13 Nov. 0.0326 0.0274 0.0301
10:01-11:00, Thu., 13 Nov. 0.0321 0.0277 0.0305
09:01-10:00, Thu., 13 Nov. 0.0336 0.0290 0.0307
08:01-09:00, Thu., 13 Nov. 0.0332 0.0283 0.0307
07:01-08:00, Thu., 13 Nov. 0.0333 0.0283 0.0306
06:01-07:00, Thu., 13 Nov. 0.0331 0.0283 0.0304
05:01-06:00, Thu., 13 Nov. 0.0323 0.0283 0.0303
04:01-05:00, Thu., 13 Nov. 0.0335 0.0287 0.0305
03:01-04:00, Thu., 13 Nov. 0.0331 0.0286 0.0308
02:01-03:00, Thu., 13 Nov. 0.0329 0.0288 0.0308
01:01-02:00, Thu., 13 Nov. 0.0329 0.0290 0.0308
00:01-01:00, Thu., 13 Nov. 0.0322 0.0284 0.0303
23:01-24:00, Wed., 12 Nov. 0.0315 0.0280 0.0299
22:01-23:00, Wed., 12 Nov. 0.0325 0.0273 0.0298
21:01-22:00, Wed., 12 Nov. 0.0311 0.0268 0.0293
20:01-21:00, Wed., 12 Nov. 0.0317 0.0262 0.0294
19:01-20:00, Wed., 12 Nov. 0.0318 0.0273 0.0290
18:01-19:00, Wed., 12 Nov. 0.0320 0.0270 0.0290
17:01-18:00, Wed., 12 Nov. 0.0316 0.0271 0.0292
16:01-17:00, Wed., 12 Nov. 0.0309 0.0259 0.0291
15:01-16:00, Wed., 12 Nov. 0.0315 0.0270 0.0291
14:01-15:00, Wed., 12 Nov. 0.0316 0.0272 0.0296
13:01-14:00, Wed., 12 Nov. 0.0320 0.0270 0.0294
12:01-13:00, Wed., 12 Nov. 0.0310 0.0271 0.0293
11:01-12:00, Wed., 12 Nov. 0.0318 0.0276 0.0294
10:01-11:00, Wed., 12 Nov. 0.0318 0.0279 0.0296
09:01-10:00, Wed., 12 Nov. 0.0322 0.0274 0.0297
08:01-09:00, Wed., 12 Nov. 0.0312 0.0271 0.0296
07:01-08:00, Wed., 12 Nov. 0.0315 0.0274 0.0295
06:01-07:00, Wed., 12 Nov. 0.0321 0.0276 0.0294
05:01-06:00, Wed., 12 Nov. 0.0318 0.0276 0.0293
04:01-05:00, Wed., 12 Nov. 0.0314 0.0263 0.0293
03:01-04:00, Wed., 12 Nov. 0.0322 0.0272 0.0294
02:01-03:00, Wed., 12 Nov. 0.0315 0.0271 0.0295
01:01-02:00, Wed., 12 Nov. 0.0320 0.0274 0.0297
00:01-01:00, Wed., 12 Nov. 0.0316 0.0275 0.0295
23:01-24:00, Tue., 11 Nov. 0.0320 0.0267 0.0296
22:01-23:00, Tue., 11 Nov. 0.0315 0.0264 0.0297
21:01-22:00, Tue., 11 Nov. 0.0312 0.0273 0.0297
20:01-21:00, Tue., 11 Nov. 0.0313 0.0278 0.0295
19:01-20:00, Tue., 11 Nov. 0.0318 0.0270 0.0298
18:01-19:00, Tue., 11 Nov. 0.0310 0.0270 0.0290
17:01-18:00, Tue., 11 Nov. 0.0313 0.0273 0.0293
16:01-17:00, Tue., 11 Nov. 0.0313 0.0276 0.0294
15:01-16:00, Tue., 11 Nov. 0.0321 0.0263 0.0298
14:01-15:00, Tue., 11 Nov. 0.0315 0.0282 0.0297
13:01-14:00, Tue., 11 Nov. 0.0325 0.0281 0.0301
12:01-13:00, Tue., 11 Nov. 0.0325 0.0278 0.0299
11:01-12:00, Tue., 11 Nov. 0.0315 0.0276 0.0299
10:01-11:00, Tue., 11 Nov. 0.0320 0.0279 0.0300
09:01-10:00, Tue., 11 Nov. 0.0320 0.0274 0.0299
08:01-09:00, Tue., 11 Nov. 0.0327 0.0280 0.0300
07:01-08:00, Tue., 11 Nov. 0.0323 0.0284 0.0300
06:01-07:00, Tue., 11 Nov. 0.0322 0.0281 0.0299
05:01-06:00, Tue., 11 Nov. 0.0331 0.0279 0.0302
04:01-05:00, Tue., 11 Nov. 0.0322 0.0278 0.0301
03:01-04:00, Tue., 11 Nov. 0.0319 0.0279 0.0298
02:01-03:00, Tue., 11 Nov. 0.0311 0.0276 0.0296
01:01-02:00, Tue., 11 Nov. 0.0320 0.0283 0.0300
00:01-01:00, Tue., 11 Nov. 0.0318 0.0271 0.0298
23:01-24:00, Mon., 10 Nov. 0.0320 0.0285 0.0301
22:01-23:00, Mon., 10 Nov. 0.0322 0.0283 0.0301
21:01-22:00, Mon., 10 Nov. 0.0326 0.0279 0.0302
20:01-21:00, Mon., 10 Nov. 0.0318 0.0270 0.0300
19:01-20:00, Mon., 10 Nov. 0.0325 0.0285 0.0303
18:01-19:00, Mon., 10 Nov. 0.0324 0.0283 0.0301
17:01-18:00, Mon., 10 Nov. 0.0322 0.0272 0.0297
16:01-17:00, Mon., 10 Nov. 0.0320 0.0272 0.0297
15:01-16:00, Mon., 10 Nov. 0.0324 0.0282 0.0300
14:01-15:00, Mon., 10 Nov. 0.0317 0.0272 0.0298
13:01-14:00, Mon., 10 Nov. 0.0325 0.0284 0.0300
12:01-13:00, Mon., 10 Nov. 0.0313 0.0276 0.0294
11:01-12:00, Mon., 10 Nov. 0.0315 0.0271 0.0296
10:01-11:00, Mon., 10 Nov. 0.0320 0.0275 0.0298
09:01-10:00, Mon., 10 Nov. 0.0316 0.0278 0.0297
08:01-09:00, Mon., 10 Nov. 0.0333 0.0286 0.0299
07:01-08:00, Mon., 10 Nov. 0.0325 0.0282 0.0302
06:01-07:00, Mon., 10 Nov. 0.0322 0.0283 0.0302
05:01-06:00, Mon., 10 Nov. 0.0326 0.0289 0.0307
04:01-05:00, Mon., 10 Nov. 0.0326 0.0280 0.0307
03:01-04:00, Mon., 10 Nov. 0.0339 0.0278 0.0308
02:01-03:00, Mon., 10 Nov. 0.0325 0.0284 0.0307
01:01-02:00, Mon., 10 Nov. 0.0327 0.0282 0.0306
00:01-01:00, Mon., 10 Nov. 0.0332 0.0290 0.0307
23:01-24:00, Sun., 09 Nov. 0.0345 0.0291 0.0312
22:01-23:00, Sun., 09 Nov. 0.0346 0.0302 0.0330
21:01-22:00, Sun., 09 Nov. 0.0348 0.0286 0.0320
20:01-21:00, Sun., 09 Nov. 0.0327 0.0281 0.0306
19:01-20:00, Sun., 09 Nov. 0.0345 0.0283 0.0315
18:01-19:00, Sun., 09 Nov. 0.0340 0.0289 0.0308
17:01-18:00, Sun., 09 Nov. 0.0325 0.0283 0.0300
16:01-17:00, Sun., 09 Nov. 0.0328 0.0269 0.0302
15:01-16:00, Sun., 09 Nov. 0.0343 0.0284 0.0315
14:01-15:00, Sun., 09 Nov. 0.0405 0.0318 0.0357
13:01-14:00, Sun., 09 Nov. 0.0402 0.0363 0.0381
12:01-13:00, Sun., 09 Nov. 0.0425 0.0345 0.0384
11:01-12:00, Sun., 09 Nov. 0.0438 0.0367 0.0400
10:01-11:00, Sun., 09 Nov. 0.0436 0.0366 0.0394
09:01-10:00, Sun., 09 Nov. 0.0496 0.0388 0.0440
08:01-09:00, Sun., 09 Nov. 0.0504 0.0429 0.0471
07:01-08:00, Sun., 09 Nov. 0.0485 0.0391 0.0446
06:01-07:00, Sun., 09 Nov. 0.0430 0.0301 0.0368
05:01-06:00, Sun., 09 Nov. 0.0343 0.0288 0.0312
04:01-05:00, Sun., 09 Nov. 0.0323 0.0294 0.0308
03:01-04:00, Sun., 09 Nov. 0.0344 0.0283 0.0308
02:01-03:00, Sun., 09 Nov. 0.0319 0.0272 0.0299
01:01-02:00, Sun., 09 Nov. 0.0315 0.0269 0.0295
00:01-01:00, Sun., 09 Nov. 0.0316 0.0275 0.0296
23:01-24:00, Sat., 08 Nov. 0.0318 0.0270 0.0296
22:01-23:00, Sat., 08 Nov. 0.0320 0.0273 0.0290
21:01-22:00, Sat., 08 Nov. 0.0310 0.0259 0.0293
20:01-21:00, Sat., 08 Nov. 0.0315 0.0275 0.0292
19:01-20:00, Sat., 08 Nov. 0.0314 0.0269 0.0293
18:01-19:00, Sat., 08 Nov. 0.0306 0.0264 0.0289
17:01-18:00, Sat., 08 Nov. 0.0309 0.0266 0.0290
16:01-17:00, Sat., 08 Nov. 0.0315 0.0270 0.0289
15:01-16:00, Sat., 08 Nov. 0.0315 0.0273 0.0294
14:01-15:00, Sat., 08 Nov. 0.0311 0.0278 0.0296
13:01-14:00, Sat., 08 Nov. 0.0319 0.0280 0.0295
12:01-13:00, Sat., 08 Nov. 0.0327 0.0286 0.0301
11:01-12:00, Sat., 08 Nov. 0.0323 0.0276 0.0301
10:01-11:00, Sat., 08 Nov. 0.0322 0.0273 0.0302
09:01-10:00, Sat., 08 Nov. 0.0322 0.0273 0.0300
08:01-09:00, Sat., 08 Nov. 0.0322 0.0280 0.0300
07:01-08:00, Sat., 08 Nov. 0.0317 0.0277 0.0295
06:01-07:00, Sat., 08 Nov. 0.0315 0.0277 0.0297
05:01-06:00, Sat., 08 Nov. 0.0315 0.0276 0.0296
04:01-05:00, Sat., 08 Nov. 0.0328 0.0270 0.0298
03:01-04:00, Sat., 08 Nov. 0.0323 0.0280 0.0298
02:01-03:00, Sat., 08 Nov. 0.0330 0.0278 0.0299
01:01-02:00, Sat., 08 Nov. 0.0318 0.0280 0.0299
00:01-01:00, Sat., 08 Nov. 0.0325 0.0273 0.0297
23:01-24:00, Fri., 07 Nov. 0.0315 0.0274 0.0295
22:01-23:00, Fri., 07 Nov. 0.0322 0.0278 0.0297
21:01-22:00, Fri., 07 Nov. 0.0315 0.0281 0.0294
20:01-21:00, Fri., 07 Nov. 0.0313 0.0274 0.0295
19:01-20:00, Fri., 07 Nov. 0.0311 0.0263 0.0296
18:01-19:00, Fri., 07 Nov. 0.0337 0.0266 0.0296
17:01-18:00, Fri., 07 Nov. 0.0311 0.0276 0.0296
16:01-17:00, Fri., 07 Nov. 0.0326 0.0281 0.0301
15:01-16:00, Fri., 07 Nov. 0.0316 0.0271 0.0295
14:01-15:00, Fri., 07 Nov. 0.0319 0.0278 0.0298
13:01-14:00, Fri., 07 Nov. 0.0320 0.0280 0.0299
12:01-13:00, Fri., 07 Nov. 0.0320 0.0280 0.0298
11:01-12:00, Fri., 07 Nov. 0.0329 0.0274 0.0294
10:01-11:00, Fri., 07 Nov. 0.0314 0.0270 0.0294
09:01-10:00, Fri., 07 Nov. 0.0318 0.0259 0.0294
08:01-09:00, Fri., 07 Nov. 0.0320 0.0277 0.0296
07:01-08:00, Fri., 07 Nov. 0.0315 0.0277 0.0295
06:01-07:00, Fri., 07 Nov. 0.0323 0.0276 0.0294
05:01-06:00, Fri., 07 Nov. 0.0308 0.0275 0.0295
04:01-05:00, Fri., 07 Nov. 0.0319 0.0272 0.0295
03:01-04:00, Fri., 07 Nov. 0.0314 0.0270 0.0294
02:01-03:00, Fri., 07 Nov. 0.0312 0.0275 0.0294
01:01-02:00, Fri., 07 Nov. 0.0315 0.0275 0.0295
00:01-01:00, Fri., 07 Nov. 0.0315 0.0277 0.0295
23:01-24:00, Thu., 06 Nov. 0.0319 0.0279 0.0295
22:01-23:00, Thu., 06 Nov. 0.0324 0.0270 0.0296
21:01-22:00, Thu., 06 Nov. 0.0311 0.0273 0.0295
20:01-21:00, Thu., 06 Nov. 0.0324 0.0276 0.0297
19:01-20:00, Thu., 06 Nov. 0.0322 0.0270 0.0294
18:01-19:00, Thu., 06 Nov. 0.0307 0.0270 0.0290
17:01-18:00, Thu., 06 Nov. 0.0318 0.0273 0.0295
16:01-17:00, Thu., 06 Nov. 0.0321 0.0277 0.0297
15:01-16:00, Thu., 06 Nov. 0.0322 0.0273 0.0296
14:01-15:00, Thu., 06 Nov. 0.0318 0.0278 0.0298
13:01-14:00, Thu., 06 Nov. 0.0320 0.0279 0.0298
12:01-13:00, Thu., 06 Nov. 0.0322 0.0280 0.0300
11:01-12:00, Thu., 06 Nov. 0.0329 0.0279 0.0297
10:01-11:00, Thu., 06 Nov. 0.0316 0.0278 0.0295
09:01-10:00, Thu., 06 Nov. 0.0322 0.0273 0.0297
08:01-09:00, Thu., 06 Nov. 0.0329 0.0280 0.0303
07:01-08:00, Thu., 06 Nov. 0.0325 0.0285 0.0304
06:01-07:00, Thu., 06 Nov. 0.0360 0.0295 0.0323
05:01-06:00, Thu., 06 Nov. 0.0398 0.0342 0.0367
04:01-05:00, Thu., 06 Nov. 0.0398 0.0346 0.0376
03:01-04:00, Thu., 06 Nov. 0.0397 0.0288 0.0335
02:01-03:00, Thu., 06 Nov. 0.0318 0.0283 0.0302
01:01-02:00, Thu., 06 Nov. 0.0324 0.0284 0.0305
00:01-01:00, Thu., 06 Nov. 0.0332 0.0289 0.0308
23:01-24:00, Wed., 05 Nov. 0.0338 0.0280 0.0308
22:01-23:00, Wed., 05 Nov. 0.0323 0.0270 0.0302