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
09:01-10:00, Fri., 13 Feb. 0.0319 0.0273 0.0298
08:01-09:00, Fri., 13 Feb. 0.0325 0.0269 0.0300
07:01-08:00, Fri., 13 Feb. 0.0323 0.0284 0.0304
06:01-07:00, Fri., 13 Feb. 0.0329 0.0284 0.0308
05:01-06:00, Fri., 13 Feb. 0.0327 0.0286 0.0307
04:01-05:00, Fri., 13 Feb. 0.0332 0.0284 0.0305
03:01-04:00, Fri., 13 Feb. 0.0326 0.0285 0.0303
02:01-03:00, Fri., 13 Feb. 0.0332 0.0277 0.0303
01:01-02:00, Fri., 13 Feb. 0.0318 0.0278 0.0303
00:01-01:00, Fri., 13 Feb. 0.0326 0.0283 0.0304
23:01-24:00, Thu., 12 Feb. 0.0332 0.0278 0.0303
22:01-23:00, Thu., 12 Feb. 0.0322 0.0286 0.0300
21:01-22:00, Thu., 12 Feb. 0.0322 0.0274 0.0297
20:01-21:00, Thu., 12 Feb. 0.0315 0.0276 0.0297
19:01-20:00, Thu., 12 Feb. 0.0311 0.0274 0.0295
18:01-19:00, Thu., 12 Feb. 0.0314 0.0270 0.0293
17:01-18:00, Thu., 12 Feb. 0.0315 0.0272 0.0294
16:01-17:00, Thu., 12 Feb. 0.0314 0.0270 0.0295
15:01-16:00, Thu., 12 Feb. 0.0314 0.0276 0.0297
14:01-15:00, Thu., 12 Feb. 0.0315 0.0272 0.0296
13:01-14:00, Thu., 12 Feb. 0.0321 0.0273 0.0296
12:01-13:00, Thu., 12 Feb. 0.0317 0.0280 0.0294
11:01-12:00, Thu., 12 Feb. 0.0317 0.0280 0.0297
10:01-11:00, Thu., 12 Feb. 0.0314 0.0279 0.0296
09:01-10:00, Thu., 12 Feb. 0.0310 0.0271 0.0295
08:01-09:00, Thu., 12 Feb. 0.0322 0.0270 0.0292
07:01-08:00, Thu., 12 Feb. 0.0318 0.0272 0.0294
06:01-07:00, Thu., 12 Feb. 0.0317 0.0263 0.0296
05:01-06:00, Thu., 12 Feb. 0.0315 0.0276 0.0297
04:01-05:00, Thu., 12 Feb. 0.0311 0.0275 0.0293
03:01-04:00, Thu., 12 Feb. 0.0321 0.0273 0.0298
02:01-03:00, Thu., 12 Feb. 0.0315 0.0271 0.0295
01:01-02:00, Thu., 12 Feb. 0.0318 0.0276 0.0294
00:01-01:00, Thu., 12 Feb. 0.0318 0.0271 0.0295
23:01-24:00, Wed., 11 Feb. 0.0308 0.0272 0.0292
22:01-23:00, Wed., 11 Feb. 0.0322 0.0269 0.0292
21:01-22:00, Wed., 11 Feb. 0.0303 0.0270 0.0290
20:01-21:00, Wed., 11 Feb. 0.0307 0.0270 0.0289
19:01-20:00, Wed., 11 Feb. 0.0317 0.0271 0.0295
18:01-19:00, Wed., 11 Feb. 0.0322 0.0270 0.0300
17:01-18:00, Wed., 11 Feb. 0.0322 0.0280 0.0302
16:01-17:00, Wed., 11 Feb. 0.0339 0.0284 0.0304
15:01-16:00, Wed., 11 Feb. 0.0329 0.0290 0.0310
14:01-15:00, Wed., 11 Feb. 0.0338 0.0294 0.0316
13:01-14:00, Wed., 11 Feb. 0.0391 0.0310 0.0347
12:01-13:00, Wed., 11 Feb. 0.0485 0.0367 0.0432
11:01-12:00, Wed., 11 Feb. 0.0530 0.0457 0.0495
10:01-11:00, Wed., 11 Feb. 0.0516 0.0442 0.0479
09:01-10:00, Wed., 11 Feb. 0.0477 0.0407 0.0435
08:01-09:00, Wed., 11 Feb. 0.0476 0.0409 0.0446
07:01-08:00, Wed., 11 Feb. 0.0453 0.0381 0.0411
06:01-07:00, Wed., 11 Feb. 0.0401 0.0338 0.0362
05:01-06:00, Wed., 11 Feb. 0.0370 0.0283 0.0326
04:01-05:00, Wed., 11 Feb. 0.0336 0.0275 0.0311
03:01-04:00, Wed., 11 Feb. 0.0328 0.0286 0.0308
02:01-03:00, Wed., 11 Feb. 0.0335 0.0279 0.0307
01:01-02:00, Wed., 11 Feb. 0.0329 0.0284 0.0305
00:01-01:00, Wed., 11 Feb. 0.0326 0.0282 0.0304
23:01-24:00, Tue., 10 Feb. 0.0323 0.0269 0.0301
22:01-23:00, Tue., 10 Feb. 0.0318 0.0284 0.0298
21:01-22:00, Tue., 10 Feb. 0.0315 0.0277 0.0296
20:01-21:00, Tue., 10 Feb. 0.0313 0.0270 0.0297
19:01-20:00, Tue., 10 Feb. 0.0315 0.0273 0.0295
18:01-19:00, Tue., 10 Feb. 0.0316 0.0266 0.0293
17:01-18:00, Tue., 10 Feb. 0.0320 0.0273 0.0291
16:01-17:00, Tue., 10 Feb. 0.0310 0.0272 0.0290
15:01-16:00, Tue., 10 Feb. 0.0308 0.0264 0.0290
14:01-15:00, Tue., 10 Feb. 0.0322 0.0268 0.0292
13:01-14:00, Tue., 10 Feb. 0.0318 0.0270 0.0290
12:01-13:00, Tue., 10 Feb. 0.0318 0.0270 0.0295
11:01-12:00, Tue., 10 Feb. 0.0318 0.0271 0.0294
10:01-11:00, Tue., 10 Feb. 0.0325 0.0277 0.0296
09:01-10:00, Tue., 10 Feb. 0.0322 0.0277 0.0300
08:01-09:00, Tue., 10 Feb. 0.0319 0.0271 0.0297
07:01-08:00, Tue., 10 Feb. 0.0322 0.0273 0.0296
06:01-07:00, Tue., 10 Feb. 0.0315 0.0272 0.0292
05:01-06:00, Tue., 10 Feb. 0.0318 0.0274 0.0294
04:01-05:00, Tue., 10 Feb. 0.0322 0.0273 0.0292
03:01-04:00, Tue., 10 Feb. 0.0315 0.0273 0.0294
02:01-03:00, Tue., 10 Feb. 0.0312 0.0267 0.0291
01:01-02:00, Tue., 10 Feb. 0.0322 0.0272 0.0294
00:01-01:00, Tue., 10 Feb. 0.0314 0.0274 0.0291
23:01-24:00, Mon., 09 Feb. 0.0318 0.0271 0.0291
22:01-23:00, Mon., 09 Feb. 0.0311 0.0271 0.0291
21:01-22:00, Mon., 09 Feb. 0.0314 0.0269 0.0291
20:01-21:00, Mon., 09 Feb. 0.0311 0.0266 0.0292
19:01-20:00, Mon., 09 Feb. 0.0312 0.0266 0.0288
18:01-19:00, Mon., 09 Feb. 0.0310 0.0268 0.0285
17:01-18:00, Mon., 09 Feb. 0.0311 0.0263 0.0288
16:01-17:00, Mon., 09 Feb. 0.0303 0.0260 0.0286
15:01-16:00, Mon., 09 Feb. 0.0313 0.0268 0.0289
14:01-15:00, Mon., 09 Feb. 0.0321 0.0266 0.0289
13:01-14:00, Mon., 09 Feb. 0.0312 0.0270 0.0292
12:01-13:00, Mon., 09 Feb. 0.0309 0.0266 0.0291
11:01-12:00, Mon., 09 Feb. 0.0311 0.0270 0.0289
10:01-11:00, Mon., 09 Feb. 0.0300 0.0268 0.0284
09:01-10:00, Mon., 09 Feb. 0.0308 0.0265 0.0287
08:01-09:00, Mon., 09 Feb. 0.0303 0.0263 0.0281
07:01-08:00, Mon., 09 Feb. 0.0307 0.0266 0.0284
06:01-07:00, Mon., 09 Feb. 0.0306 0.0261 0.0287
05:01-06:00, Mon., 09 Feb. 0.0319 0.0266 0.0289
04:01-05:00, Mon., 09 Feb. 0.0308 0.0263 0.0288
03:01-04:00, Mon., 09 Feb. 0.0311 0.0267 0.0289
02:01-03:00, Mon., 09 Feb. 0.0315 0.0271 0.0294
01:01-02:00, Mon., 09 Feb. 0.0318 0.0274 0.0297
00:01-01:00, Mon., 09 Feb. 0.0314 0.0270 0.0290
23:01-24:00, Sun., 08 Feb. 0.0314 0.0270 0.0292
22:01-23:00, Sun., 08 Feb. 0.0318 0.0271 0.0295
21:01-22:00, Sun., 08 Feb. 0.0315 0.0270 0.0293
20:01-21:00, Sun., 08 Feb. 0.0322 0.0270 0.0290
19:01-20:00, Sun., 08 Feb. 0.0313 0.0267 0.0290
18:01-19:00, Sun., 08 Feb. 0.0314 0.0266 0.0287
17:01-18:00, Sun., 08 Feb. 0.0307 0.0273 0.0288
16:01-17:00, Sun., 08 Feb. 0.0311 0.0270 0.0288
15:01-16:00, Sun., 08 Feb. 0.0316 0.0270 0.0290
14:01-15:00, Sun., 08 Feb. 0.0321 0.0276 0.0298
13:01-14:00, Sun., 08 Feb. 0.0381 0.0289 0.0322
12:01-13:00, Sun., 08 Feb. 0.0390 0.0346 0.0371
11:01-12:00, Sun., 08 Feb. 0.0401 0.0357 0.0377
10:01-11:00, Sun., 08 Feb. 0.0384 0.0339 0.0363
09:01-10:00, Sun., 08 Feb. 0.0374 0.0313 0.0347
08:01-09:00, Sun., 08 Feb. 0.0351 0.0299 0.0326
07:01-08:00, Sun., 08 Feb. 0.0345 0.0299 0.0322
06:01-07:00, Sun., 08 Feb. 0.0378 0.0321 0.0344
05:01-06:00, Sun., 08 Feb. 0.0408 0.0338 0.0374
04:01-05:00, Sun., 08 Feb. 0.0376 0.0332 0.0356
03:01-04:00, Sun., 08 Feb. 0.0393 0.0344 0.0370
02:01-03:00, Sun., 08 Feb. 0.0416 0.0340 0.0386
01:01-02:00, Sun., 08 Feb. 0.0388 0.0308 0.0338
00:01-01:00, Sun., 08 Feb. 0.0364 0.0299 0.0330
23:01-24:00, Sat., 07 Feb. 0.0363 0.0322 0.0344
22:01-23:00, Sat., 07 Feb. 0.0369 0.0312 0.0342
21:01-22:00, Sat., 07 Feb. 0.0363 0.0285 0.0319
20:01-21:00, Sat., 07 Feb. 0.0330 0.0286 0.0306
19:01-20:00, Sat., 07 Feb. 0.0330 0.0279 0.0304
18:01-19:00, Sat., 07 Feb. 0.0326 0.0280 0.0301
17:01-18:00, Sat., 07 Feb. 0.0322 0.0279 0.0301
16:01-17:00, Sat., 07 Feb. 0.0329 0.0272 0.0303
15:01-16:00, Sat., 07 Feb. 0.0330 0.0287 0.0307
14:01-15:00, Sat., 07 Feb. 0.0345 0.0291 0.0319
13:01-14:00, Sat., 07 Feb. 0.0378 0.0317 0.0353
12:01-13:00, Sat., 07 Feb. 0.0353 0.0294 0.0323
11:01-12:00, Sat., 07 Feb. 0.0336 0.0296 0.0318
10:01-11:00, Sat., 07 Feb. 0.0338 0.0296 0.0314
09:01-10:00, Sat., 07 Feb. 0.0329 0.0280 0.0307
08:01-09:00, Sat., 07 Feb. 0.0326 0.0270 0.0307
07:01-08:00, Sat., 07 Feb. 0.0319 0.0274 0.0303
06:01-07:00, Sat., 07 Feb. 0.0332 0.0289 0.0306
05:01-06:00, Sat., 07 Feb. 0.0321 0.0279 0.0303
04:01-05:00, Sat., 07 Feb. 0.0332 0.0284 0.0305
03:01-04:00, Sat., 07 Feb. 0.0334 0.0278 0.0303
02:01-03:00, Sat., 07 Feb. 0.0331 0.0283 0.0307
01:01-02:00, Sat., 07 Feb. 0.0330 0.0285 0.0304
00:01-01:00, Sat., 07 Feb. 0.0324 0.0283 0.0303
23:01-24:00, Fri., 06 Feb. 0.0325 0.0284 0.0303
22:01-23:00, Fri., 06 Feb. 0.0332 0.0279 0.0308
21:01-22:00, Fri., 06 Feb. 0.0326 0.0283 0.0306
20:01-21:00, Fri., 06 Feb. 0.0334 0.0283 0.0310
19:01-20:00, Fri., 06 Feb. 0.0326 0.0287 0.0307
18:01-19:00, Fri., 06 Feb. 0.0337 0.0283 0.0303
17:01-18:00, Fri., 06 Feb. 0.0322 0.0284 0.0304
16:01-17:00, Fri., 06 Feb. 0.0332 0.0279 0.0304
15:01-16:00, Fri., 06 Feb. 0.0329 0.0287 0.0305
14:01-15:00, Fri., 06 Feb. 0.0329 0.0284 0.0307
13:01-14:00, Fri., 06 Feb. 0.0332 0.0290 0.0310
12:01-13:00, Fri., 06 Feb. 0.0336 0.0291 0.0314
11:01-12:00, Fri., 06 Feb. 0.0344 0.0292 0.0319
10:01-11:00, Fri., 06 Feb. 0.0336 0.0298 0.0317
09:01-10:00, Fri., 06 Feb. 0.0338 0.0291 0.0318
08:01-09:00, Fri., 06 Feb. 0.0334 0.0283 0.0317
07:01-08:00, Fri., 06 Feb. 0.0338 0.0293 0.0315
06:01-07:00, Fri., 06 Feb. 0.0330 0.0293 0.0312
05:01-06:00, Fri., 06 Feb. 0.0344 0.0294 0.0315
04:01-05:00, Fri., 06 Feb. 0.0335 0.0294 0.0315
03:01-04:00, Fri., 06 Feb. 0.0336 0.0293 0.0312
02:01-03:00, Fri., 06 Feb. 0.0336 0.0296 0.0312
01:01-02:00, Fri., 06 Feb. 0.0329 0.0292 0.0311
00:01-01:00, Fri., 06 Feb. 0.0336 0.0289 0.0313
23:01-24:00, Thu., 05 Feb. 0.0327 0.0289 0.0309
22:01-23:00, Thu., 05 Feb. 0.0325 0.0285 0.0306
21:01-22:00, Thu., 05 Feb. 0.0326 0.0287 0.0306
20:01-21:00, Thu., 05 Feb. 0.0325 0.0270 0.0303
19:01-20:00, Thu., 05 Feb. 0.0322 0.0284 0.0299
18:01-19:00, Thu., 05 Feb. 0.0323 0.0280 0.0298
17:01-18:00, Thu., 05 Feb. 0.0321 0.0274 0.0299
16:01-17:00, Thu., 05 Feb. 0.0315 0.0279 0.0296
15:01-16:00, Thu., 05 Feb. 0.0329 0.0283 0.0302
14:01-15:00, Thu., 05 Feb. 0.0325 0.0284 0.0305
13:01-14:00, Thu., 05 Feb. 0.0336 0.0288 0.0304
12:01-13:00, Thu., 05 Feb. 0.0325 0.0290 0.0306
11:01-12:00, Thu., 05 Feb. 0.0337 0.0287 0.0311
10:01-11:00, Thu., 05 Feb. 0.0342 0.0288 0.0313
09:01-10:00, Thu., 05 Feb. 0.0342 0.0290 0.0313
08:01-09:00, Thu., 05 Feb. 0.0328 0.0294 0.0313
07:01-08:00, Thu., 05 Feb. 0.0339 0.0294 0.0312
06:01-07:00, Thu., 05 Feb. 0.0332 0.0291 0.0313
05:01-06:00, Thu., 05 Feb. 0.0340 0.0290 0.0313
04:01-05:00, Thu., 05 Feb. 0.0342 0.0289 0.0314
03:01-04:00, Thu., 05 Feb. 0.0339 0.0286 0.0312
02:01-03:00, Thu., 05 Feb. 0.0329 0.0283 0.0309
01:01-02:00, Thu., 05 Feb. 0.0332 0.0289 0.0309
00:01-01:00, Thu., 05 Feb. 0.0332 0.0287 0.0309
23:01-24:00, Wed., 04 Feb. 0.0323 0.0279 0.0307
22:01-23:00, Wed., 04 Feb. 0.0330 0.0289 0.0305
21:01-22:00, Wed., 04 Feb. 0.0325 0.0269 0.0302
20:01-21:00, Wed., 04 Feb. 0.0322 0.0282 0.0302
19:01-20:00, Wed., 04 Feb. 0.0317 0.0280 0.0298
18:01-19:00, Wed., 04 Feb. 0.0323 0.0271 0.0298
17:01-18:00, Wed., 04 Feb. 0.0317 0.0274 0.0296
16:01-17:00, Wed., 04 Feb. 0.0322 0.0270 0.0301
15:01-16:00, Wed., 04 Feb. 0.0323 0.0283 0.0302
14:01-15:00, Wed., 04 Feb. 0.0325 0.0279 0.0300
13:01-14:00, Wed., 04 Feb. 0.0324 0.0283 0.0303
12:01-13:00, Wed., 04 Feb. 0.0320 0.0286 0.0304
11:01-12:00, Wed., 04 Feb. 0.0334 0.0285 0.0306
10:01-11:00, Wed., 04 Feb. 0.0332 0.0274 0.0308
09:01-10:00, Wed., 04 Feb. 0.0325 0.0288 0.0309
08:01-09:00, Wed., 04 Feb. 0.0326 0.0281 0.0305
07:01-08:00, Wed., 04 Feb. 0.0330 0.0287 0.0306
06:01-07:00, Wed., 04 Feb. 0.0330 0.0286 0.0308
05:01-06:00, Wed., 04 Feb. 0.0332 0.0284 0.0310
04:01-05:00, Wed., 04 Feb. 0.0339 0.0287 0.0309
03:01-04:00, Wed., 04 Feb. 0.0327 0.0281 0.0308
02:01-03:00, Wed., 04 Feb. 0.0333 0.0288 0.0308
01:01-02:00, Wed., 04 Feb. 0.0326 0.0286 0.0302
00:01-01:00, Wed., 04 Feb. 0.0327 0.0283 0.0305
23:01-24:00, Tue., 03 Feb. 0.0331 0.0288 0.0303
22:01-23:00, Tue., 03 Feb. 0.0328 0.0282 0.0300
21:01-22:00, Tue., 03 Feb. 0.0324 0.0280 0.0299
20:01-21:00, Tue., 03 Feb. 0.0319 0.0276 0.0298
19:01-20:00, Tue., 03 Feb. 0.0318 0.0280 0.0297
18:01-19:00, Tue., 03 Feb. 0.0325 0.0280 0.0296
17:01-18:00, Tue., 03 Feb. 0.0311 0.0282 0.0294
16:01-17:00, Tue., 03 Feb. 0.0313 0.0275 0.0294
15:01-16:00, Tue., 03 Feb. 0.0312 0.0272 0.0294
14:01-15:00, Tue., 03 Feb. 0.0325 0.0271 0.0297
13:01-14:00, Tue., 03 Feb. 0.0317 0.0271 0.0295
12:01-13:00, Tue., 03 Feb. 0.0317 0.0275 0.0296
11:01-12:00, Tue., 03 Feb. 0.0321 0.0273 0.0297
10:01-11:00, Tue., 03 Feb. 0.0327 0.0273 0.0298