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
02:01-03:00, Sun., 30 Nov. 0.0343 0.0287 0.0314
01:01-02:00, Sun., 30 Nov. 0.0334 0.0293 0.0313
00:01-01:00, Sun., 30 Nov. 0.0336 0.0286 0.0306
23:01-24:00, Sat., 29 Nov. 0.0323 0.0275 0.0301
22:01-23:00, Sat., 29 Nov. 0.0321 0.0276 0.0301
21:01-22:00, Sat., 29 Nov. 0.0318 0.0280 0.0301
20:01-21:00, Sat., 29 Nov. 0.0326 0.0273 0.0298
19:01-20:00, Sat., 29 Nov. 0.0322 0.0275 0.0301
18:01-19:00, Sat., 29 Nov. 0.0321 0.0266 0.0299
17:01-18:00, Sat., 29 Nov. 0.0316 0.0277 0.0298
16:01-17:00, Sat., 29 Nov. 0.0334 0.0270 0.0300
15:01-16:00, Sat., 29 Nov. 0.0316 0.0277 0.0300
14:01-15:00, Sat., 29 Nov. 0.0324 0.0279 0.0300
13:01-14:00, Sat., 29 Nov. 0.0322 0.0280 0.0304
12:01-13:00, Sat., 29 Nov. 0.0331 0.0284 0.0304
11:01-12:00, Sat., 29 Nov. 0.0320 0.0276 0.0299
10:01-11:00, Sat., 29 Nov. 0.0323 0.0270 0.0301
09:01-10:00, Sat., 29 Nov. 0.0321 0.0276 0.0300
08:01-09:00, Sat., 29 Nov. 0.0314 0.0277 0.0298
07:01-08:00, Sat., 29 Nov. 0.0322 0.0283 0.0300
06:01-07:00, Sat., 29 Nov. 0.0323 0.0259 0.0300
05:01-06:00, Sat., 29 Nov. 0.0327 0.0280 0.0306
04:01-05:00, Sat., 29 Nov. 0.0327 0.0289 0.0310
03:01-04:00, Sat., 29 Nov. 0.0330 0.0290 0.0311
02:01-03:00, Sat., 29 Nov. 0.0347 0.0287 0.0312
01:01-02:00, Sat., 29 Nov. 0.0339 0.0293 0.0316
00:01-01:00, Sat., 29 Nov. 0.0337 0.0293 0.0319
23:01-24:00, Fri., 28 Nov. 0.0337 0.0297 0.0318
22:01-23:00, Fri., 28 Nov. 0.0343 0.0298 0.0319
21:01-22:00, Fri., 28 Nov. 0.0345 0.0301 0.0317
20:01-21:00, Fri., 28 Nov. 0.0330 0.0289 0.0311
19:01-20:00, Fri., 28 Nov. 0.0341 0.0287 0.0309
18:01-19:00, Fri., 28 Nov. 0.0322 0.0274 0.0303
17:01-18:00, Fri., 28 Nov. 0.0333 0.0281 0.0306
16:01-17:00, Fri., 28 Nov. 0.0327 0.0287 0.0307
15:01-16:00, Fri., 28 Nov. 0.0326 0.0287 0.0307
14:01-15:00, Fri., 28 Nov. 0.0329 0.0291 0.0309
13:01-14:00, Fri., 28 Nov. 0.0329 0.0281 0.0307
12:01-13:00, Fri., 28 Nov. 0.0334 0.0290 0.0310
11:01-12:00, Fri., 28 Nov. 0.0332 0.0294 0.0311
10:01-11:00, Fri., 28 Nov. 0.0334 0.0291 0.0312
09:01-10:00, Fri., 28 Nov. 0.0324 0.0280 0.0304
08:01-09:00, Fri., 28 Nov. 0.0334 0.0289 0.0306
07:01-08:00, Fri., 28 Nov. 0.0331 0.0274 0.0306
06:01-07:00, Fri., 28 Nov. 0.0332 0.0282 0.0307
05:01-06:00, Fri., 28 Nov. 0.0330 0.0294 0.0310
04:01-05:00, Fri., 28 Nov. 0.0327 0.0284 0.0313
03:01-04:00, Fri., 28 Nov. 0.0338 0.0287 0.0308
02:01-03:00, Fri., 28 Nov. 0.0329 0.0292 0.0310
01:01-02:00, Fri., 28 Nov. 0.0328 0.0284 0.0310
00:01-01:00, Fri., 28 Nov. 0.0329 0.0289 0.0306
23:01-24:00, Thu., 27 Nov. 0.0329 0.0286 0.0306
22:01-23:00, Thu., 27 Nov. 0.0322 0.0283 0.0303
21:01-22:00, Thu., 27 Nov. 0.0330 0.0280 0.0305
20:01-21:00, Thu., 27 Nov. 0.0326 0.0289 0.0308
19:01-20:00, Thu., 27 Nov. 0.0326 0.0287 0.0307
18:01-19:00, Thu., 27 Nov. 0.0330 0.0288 0.0307
17:01-18:00, Thu., 27 Nov. 0.0337 0.0283 0.0311
16:01-17:00, Thu., 27 Nov. 0.0331 0.0294 0.0315
15:01-16:00, Thu., 27 Nov. 0.0330 0.0281 0.0303
14:01-15:00, Thu., 27 Nov. 0.0327 0.0276 0.0302
13:01-14:00, Thu., 27 Nov. 0.0324 0.0282 0.0303
12:01-13:00, Thu., 27 Nov. 0.0330 0.0279 0.0303
11:01-12:00, Thu., 27 Nov. 0.0322 0.0285 0.0303
10:01-11:00, Thu., 27 Nov. 0.0332 0.0285 0.0306
09:01-10:00, Thu., 27 Nov. 0.0335 0.0286 0.0306
08:01-09:00, Thu., 27 Nov. 0.0328 0.0289 0.0307
07:01-08:00, Thu., 27 Nov. 0.0329 0.0287 0.0305
06:01-07:00, Thu., 27 Nov. 0.0325 0.0280 0.0304
05:01-06:00, Thu., 27 Nov. 0.0324 0.0287 0.0302
04:01-05:00, Thu., 27 Nov. 0.0333 0.0279 0.0300
03:01-04:00, Thu., 27 Nov. 0.0315 0.0276 0.0297
02:01-03:00, Thu., 27 Nov. 0.0323 0.0279 0.0296
01:01-02:00, Thu., 27 Nov. 0.0321 0.0280 0.0297
00:01-01:00, Thu., 27 Nov. 0.0319 0.0269 0.0297
23:01-24:00, Wed., 26 Nov. 0.0326 0.0272 0.0299
22:01-23:00, Wed., 26 Nov. 0.0324 0.0276 0.0300
21:01-22:00, Wed., 26 Nov. 0.0318 0.0282 0.0298
20:01-21:00, Wed., 26 Nov. 0.0319 0.0276 0.0297
19:01-20:00, Wed., 26 Nov. 0.0315 0.0279 0.0299
18:01-19:00, Wed., 26 Nov. 0.0317 0.0273 0.0295
17:01-18:00, Wed., 26 Nov. 0.0318 0.0270 0.0295
16:01-17:00, Wed., 26 Nov. 0.0315 0.0270 0.0295
15:01-16:00, Wed., 26 Nov. 0.0326 0.0276 0.0299
14:01-15:00, Wed., 26 Nov. 0.0323 0.0281 0.0297
13:01-14:00, Wed., 26 Nov. 0.0324 0.0276 0.0299
12:01-13:00, Wed., 26 Nov. 0.0326 0.0287 0.0306
11:01-12:00, Wed., 26 Nov. 0.0339 0.0288 0.0308
10:01-11:00, Wed., 26 Nov. 0.0344 0.0294 0.0313
09:01-10:00, Wed., 26 Nov. 0.0335 0.0294 0.0314
08:01-09:00, Wed., 26 Nov. 0.0339 0.0287 0.0315
07:01-08:00, Wed., 26 Nov. 0.0339 0.0295 0.0313
06:01-07:00, Wed., 26 Nov. 0.0339 0.0287 0.0313
05:01-06:00, Wed., 26 Nov. 0.0340 0.0296 0.0316
04:01-05:00, Wed., 26 Nov. 0.0350 0.0300 0.0317
03:01-04:00, Wed., 26 Nov. 0.0348 0.0308 0.0325
02:01-03:00, Wed., 26 Nov. 0.0353 0.0307 0.0327
01:01-02:00, Wed., 26 Nov. 0.0340 0.0307 0.0325
00:01-01:00, Wed., 26 Nov. 0.0344 0.0286 0.0316
23:01-24:00, Tue., 25 Nov. 0.0331 0.0281 0.0313
22:01-23:00, Tue., 25 Nov. 0.0333 0.0295 0.0315
21:01-22:00, Tue., 25 Nov. 0.0336 0.0294 0.0309
20:01-21:00, Tue., 25 Nov. 0.0330 0.0289 0.0308
19:01-20:00, Tue., 25 Nov. 0.0335 0.0282 0.0307
18:01-19:00, Tue., 25 Nov. 0.0336 0.0290 0.0315
17:01-18:00, Tue., 25 Nov. 0.0363 0.0315 0.0336
16:01-17:00, Tue., 25 Nov. 0.0388 0.0325 0.0361
15:01-16:00, Tue., 25 Nov. 0.0384 0.0316 0.0345
14:01-15:00, Tue., 25 Nov. 0.0363 0.0304 0.0335
13:01-14:00, Tue., 25 Nov. 0.0377 0.0334 0.0355
12:01-13:00, Tue., 25 Nov. 0.0409 0.0346 0.0377
11:01-12:00, Tue., 25 Nov. 0.0397 0.0315 0.0348
10:01-11:00, Tue., 25 Nov. 0.0401 0.0317 0.0359
09:01-10:00, Tue., 25 Nov. 0.0411 0.0293 0.0349
08:01-09:00, Tue., 25 Nov. 0.0338 0.0287 0.0315
07:01-08:00, Tue., 25 Nov. 0.0337 0.0290 0.0312
06:01-07:00, Tue., 25 Nov. 0.0343 0.0294 0.0316
05:01-06:00, Tue., 25 Nov. 0.0331 0.0289 0.0310
04:01-05:00, Tue., 25 Nov. 0.0353 0.0290 0.0314
03:01-04:00, Tue., 25 Nov. 0.0336 0.0288 0.0309
02:01-03:00, Tue., 25 Nov. 0.0333 0.0292 0.0314
01:01-02:00, Tue., 25 Nov. 0.0339 0.0289 0.0315
00:01-01:00, Tue., 25 Nov. 0.0332 0.0287 0.0307
23:01-24:00, Mon., 24 Nov. 0.0336 0.0294 0.0310
22:01-23:00, Mon., 24 Nov. 0.0330 0.0288 0.0305
21:01-22:00, Mon., 24 Nov. 0.0326 0.0289 0.0304
20:01-21:00, Mon., 24 Nov. 0.0325 0.0279 0.0302
19:01-20:00, Mon., 24 Nov. 0.0318 0.0279 0.0300
18:01-19:00, Mon., 24 Nov. 0.0334 0.0278 0.0301
17:01-18:00, Mon., 24 Nov. 0.0328 0.0280 0.0298
16:01-17:00, Mon., 24 Nov. 0.0323 0.0274 0.0302
15:01-16:00, Mon., 24 Nov. 0.0332 0.0276 0.0302
14:01-15:00, Mon., 24 Nov. 0.0328 0.0286 0.0305
13:01-14:00, Mon., 24 Nov. 0.0333 0.0282 0.0306
12:01-13:00, Mon., 24 Nov. 0.0326 0.0270 0.0307
11:01-12:00, Mon., 24 Nov. 0.0330 0.0280 0.0311
10:01-11:00, Mon., 24 Nov. 0.0339 0.0283 0.0312
09:01-10:00, Mon., 24 Nov. 0.0342 0.0296 0.0317
08:01-09:00, Mon., 24 Nov. 0.0344 0.0294 0.0322
07:01-08:00, Mon., 24 Nov. 0.0338 0.0295 0.0317
06:01-07:00, Mon., 24 Nov. 0.0340 0.0294 0.0313
05:01-06:00, Mon., 24 Nov. 0.0332 0.0296 0.0313
04:01-05:00, Mon., 24 Nov. 0.0333 0.0289 0.0314
03:01-04:00, Mon., 24 Nov. 0.0338 0.0297 0.0319
02:01-03:00, Mon., 24 Nov. 0.0334 0.0296 0.0314
01:01-02:00, Mon., 24 Nov. 0.0329 0.0283 0.0309
00:01-01:00, Mon., 24 Nov. 0.0327 0.0287 0.0306
23:01-24:00, Sun., 23 Nov. 0.0326 0.0288 0.0309
22:01-23:00, Sun., 23 Nov. 0.0335 0.0281 0.0310
21:01-22:00, Sun., 23 Nov. 0.0326 0.0290 0.0307
20:01-21:00, Sun., 23 Nov. 0.0324 0.0283 0.0306
19:01-20:00, Sun., 23 Nov. 0.0326 0.0282 0.0306
18:01-19:00, Sun., 23 Nov. 0.0322 0.0280 0.0302
17:01-18:00, Sun., 23 Nov. 0.0324 0.0280 0.0304
16:01-17:00, Sun., 23 Nov. 0.0332 0.0282 0.0304
15:01-16:00, Sun., 23 Nov. 0.0334 0.0283 0.0307
14:01-15:00, Sun., 23 Nov. 0.0326 0.0289 0.0307
13:01-14:00, Sun., 23 Nov. 0.0321 0.0283 0.0305
12:01-13:00, Sun., 23 Nov. 0.0326 0.0289 0.0305
11:01-12:00, Sun., 23 Nov. 0.0322 0.0283 0.0304
10:01-11:00, Sun., 23 Nov. 0.0331 0.0285 0.0308
09:01-10:00, Sun., 23 Nov. 0.0338 0.0290 0.0312
08:01-09:00, Sun., 23 Nov. 0.0333 0.0301 0.0316
07:01-08:00, Sun., 23 Nov. 0.0345 0.0308 0.0325
06:01-07:00, Sun., 23 Nov. 0.0344 0.0292 0.0319
05:01-06:00, Sun., 23 Nov. 0.0343 0.0303 0.0323
04:01-05:00, Sun., 23 Nov. 0.0337 0.0289 0.0313
03:01-04:00, Sun., 23 Nov. 0.0335 0.0292 0.0312
02:01-03:00, Sun., 23 Nov. 0.0325 0.0284 0.0307
01:01-02:00, Sun., 23 Nov. 0.0338 0.0277 0.0307
00:01-01:00, Sun., 23 Nov. 0.0323 0.0287 0.0304
23:01-24:00, Sat., 22 Nov. 0.0324 0.0287 0.0303
22:01-23:00, Sat., 22 Nov. 0.0326 0.0277 0.0300
21:01-22:00, Sat., 22 Nov. 0.0322 0.0279 0.0300
20:01-21:00, Sat., 22 Nov. 0.0316 0.0270 0.0296
19:01-20:00, Sat., 22 Nov. 0.0325 0.0276 0.0297
18:01-19:00, Sat., 22 Nov. 0.0315 0.0282 0.0296
17:01-18:00, Sat., 22 Nov. 0.0314 0.0273 0.0296
16:01-17:00, Sat., 22 Nov. 0.0328 0.0279 0.0299
15:01-16:00, Sat., 22 Nov. 0.0318 0.0278 0.0300
14:01-15:00, Sat., 22 Nov. 0.0322 0.0278 0.0302
13:01-14:00, Sat., 22 Nov. 0.0322 0.0282 0.0302
12:01-13:00, Sat., 22 Nov. 0.0329 0.0287 0.0305
11:01-12:00, Sat., 22 Nov. 0.0322 0.0274 0.0298
10:01-11:00, Sat., 22 Nov. 0.0320 0.0276 0.0302
09:01-10:00, Sat., 22 Nov. 0.0331 0.0286 0.0302
08:01-09:00, Sat., 22 Nov. 0.0324 0.0288 0.0304
07:01-08:00, Sat., 22 Nov. 0.0332 0.0280 0.0306
06:01-07:00, Sat., 22 Nov. 0.0327 0.0279 0.0307
05:01-06:00, Sat., 22 Nov. 0.0338 0.0290 0.0309
04:01-05:00, Sat., 22 Nov. 0.0322 0.0285 0.0308
03:01-04:00, Sat., 22 Nov. 0.0332 0.0291 0.0312
02:01-03:00, Sat., 22 Nov. 0.0335 0.0295 0.0315
01:01-02:00, Sat., 22 Nov. 0.0338 0.0289 0.0311
00:01-01:00, Sat., 22 Nov. 0.0336 0.0288 0.0313
23:01-24:00, Fri., 21 Nov. 0.0332 0.0294 0.0314
22:01-23:00, Fri., 21 Nov. 0.0332 0.0279 0.0311
21:01-22:00, Fri., 21 Nov. 0.0329 0.0288 0.0309
20:01-21:00, Fri., 21 Nov. 0.0332 0.0287 0.0308
19:01-20:00, Fri., 21 Nov. 0.0332 0.0282 0.0305
18:01-19:00, Fri., 21 Nov. 0.0329 0.0280 0.0304
17:01-18:00, Fri., 21 Nov. 0.0325 0.0266 0.0302
16:01-17:00, Fri., 21 Nov. 0.0332 0.0285 0.0306
15:01-16:00, Fri., 21 Nov. 0.0332 0.0288 0.0308
14:01-15:00, Fri., 21 Nov. 0.0333 0.0293 0.0315
13:01-14:00, Fri., 21 Nov. 0.0343 0.0287 0.0315
12:01-13:00, Fri., 21 Nov. 0.0343 0.0287 0.0315
11:01-12:00, Fri., 21 Nov. 0.0345 0.0297 0.0317
10:01-11:00, Fri., 21 Nov. 0.0367 0.0297 0.0322
09:01-10:00, Fri., 21 Nov. 0.0342 0.0295 0.0319
08:01-09:00, Fri., 21 Nov. 0.0344 0.0290 0.0321
07:01-08:00, Fri., 21 Nov. 0.0349 0.0297 0.0320
06:01-07:00, Fri., 21 Nov. 0.0342 0.0302 0.0319
05:01-06:00, Fri., 21 Nov. 0.0337 0.0304 0.0319
04:01-05:00, Fri., 21 Nov. 0.0341 0.0293 0.0316
03:01-04:00, Fri., 21 Nov. 0.0334 0.0297 0.0314
02:01-03:00, Fri., 21 Nov. 0.0340 0.0283 0.0314
01:01-02:00, Fri., 21 Nov. 0.0336 0.0292 0.0313
00:01-01:00, Fri., 21 Nov. 0.0336 0.0287 0.0308
23:01-24:00, Thu., 20 Nov. 0.0329 0.0282 0.0307
22:01-23:00, Thu., 20 Nov. 0.0327 0.0284 0.0306
21:01-22:00, Thu., 20 Nov. 0.0320 0.0279 0.0300
20:01-21:00, Thu., 20 Nov. 0.0330 0.0274 0.0300
19:01-20:00, Thu., 20 Nov. 0.0315 0.0280 0.0297
18:01-19:00, Thu., 20 Nov. 0.0318 0.0275 0.0297
17:01-18:00, Thu., 20 Nov. 0.0313 0.0274 0.0294
16:01-17:00, Thu., 20 Nov. 0.0314 0.0275 0.0294
15:01-16:00, Thu., 20 Nov. 0.0327 0.0267 0.0302
14:01-15:00, Thu., 20 Nov. 0.0330 0.0276 0.0302
13:01-14:00, Thu., 20 Nov. 0.0324 0.0276 0.0301
12:01-13:00, Thu., 20 Nov. 0.0328 0.0287 0.0302
11:01-12:00, Thu., 20 Nov. 0.0325 0.0275 0.0303
10:01-11:00, Thu., 20 Nov. 0.0331 0.0285 0.0308
09:01-10:00, Thu., 20 Nov. 0.0332 0.0290 0.0311
08:01-09:00, Thu., 20 Nov. 0.0332 0.0291 0.0309
07:01-08:00, Thu., 20 Nov. 0.0329 0.0280 0.0306
06:01-07:00, Thu., 20 Nov. 0.0326 0.0280 0.0305
05:01-06:00, Thu., 20 Nov. 0.0341 0.0288 0.0312
04:01-05:00, Thu., 20 Nov. 0.0345 0.0292 0.0316
03:01-04:00, Thu., 20 Nov. 0.0335 0.0280 0.0311