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
11:01-12:00, Sat., 13 Dec. 0.0312 0.0271 0.0294
10:01-11:00, Sat., 13 Dec. 0.0309 0.0270 0.0293
09:01-10:00, Sat., 13 Dec. 0.0312 0.0267 0.0295
08:01-09:00, Sat., 13 Dec. 0.0318 0.0271 0.0293
07:01-08:00, Sat., 13 Dec. 0.0315 0.0266 0.0291
06:01-07:00, Sat., 13 Dec. 0.0316 0.0274 0.0293
05:01-06:00, Sat., 13 Dec. 0.0316 0.0273 0.0291
04:01-05:00, Sat., 13 Dec. 0.0317 0.0276 0.0295
03:01-04:00, Sat., 13 Dec. 0.0325 0.0279 0.0296
02:01-03:00, Sat., 13 Dec. 0.0325 0.0272 0.0299
01:01-02:00, Sat., 13 Dec. 0.0316 0.0277 0.0297
00:01-01:00, Sat., 13 Dec. 0.0323 0.0282 0.0300
23:01-24:00, Fri., 12 Dec. 0.0318 0.0275 0.0299
22:01-23:00, Fri., 12 Dec. 0.0321 0.0275 0.0295
21:01-22:00, Fri., 12 Dec. 0.0312 0.0273 0.0297
20:01-21:00, Fri., 12 Dec. 0.0316 0.0276 0.0297
19:01-20:00, Fri., 12 Dec. 0.0313 0.0270 0.0291
18:01-19:00, Fri., 12 Dec. 0.0308 0.0268 0.0291
17:01-18:00, Fri., 12 Dec. 0.0311 0.0274 0.0292
16:01-17:00, Fri., 12 Dec. 0.0308 0.0266 0.0290
15:01-16:00, Fri., 12 Dec. 0.0323 0.0265 0.0291
14:01-15:00, Fri., 12 Dec. 0.0318 0.0270 0.0294
13:01-14:00, Fri., 12 Dec. 0.0316 0.0273 0.0293
12:01-13:00, Fri., 12 Dec. 0.0311 0.0262 0.0292
11:01-12:00, Fri., 12 Dec. 0.0315 0.0270 0.0292
10:01-11:00, Fri., 12 Dec. 0.0317 0.0276 0.0295
09:01-10:00, Fri., 12 Dec. 0.0318 0.0264 0.0294
08:01-09:00, Fri., 12 Dec. 0.0321 0.0273 0.0297
07:01-08:00, Fri., 12 Dec. 0.0324 0.0276 0.0300
06:01-07:00, Fri., 12 Dec. 0.0325 0.0280 0.0300
05:01-06:00, Fri., 12 Dec. 0.0329 0.0287 0.0306
04:01-05:00, Fri., 12 Dec. 0.0334 0.0286 0.0307
03:01-04:00, Fri., 12 Dec. 0.0325 0.0284 0.0308
02:01-03:00, Fri., 12 Dec. 0.0331 0.0297 0.0311
01:01-02:00, Fri., 12 Dec. 0.0325 0.0285 0.0304
00:01-01:00, Fri., 12 Dec. 0.0325 0.0283 0.0305
23:01-24:00, Thu., 11 Dec. 0.0332 0.0287 0.0306
22:01-23:00, Thu., 11 Dec. 0.0327 0.0282 0.0305
21:01-22:00, Thu., 11 Dec. 0.0319 0.0280 0.0301
20:01-21:00, Thu., 11 Dec. 0.0329 0.0276 0.0297
19:01-20:00, Thu., 11 Dec. 0.0326 0.0280 0.0298
18:01-19:00, Thu., 11 Dec. 0.0330 0.0273 0.0299
17:01-18:00, Thu., 11 Dec. 0.0322 0.0278 0.0297
16:01-17:00, Thu., 11 Dec. 0.0312 0.0276 0.0294
15:01-16:00, Thu., 11 Dec. 0.0326 0.0269 0.0300
14:01-15:00, Thu., 11 Dec. 0.0336 0.0282 0.0306
13:01-14:00, Thu., 11 Dec. 0.0331 0.0291 0.0308
12:01-13:00, Thu., 11 Dec. 0.0336 0.0290 0.0308
11:01-12:00, Thu., 11 Dec. 0.0336 0.0287 0.0312
10:01-11:00, Thu., 11 Dec. 0.0332 0.0294 0.0313
09:01-10:00, Thu., 11 Dec. 0.0336 0.0279 0.0311
08:01-09:00, Thu., 11 Dec. 0.0336 0.0290 0.0308
07:01-08:00, Thu., 11 Dec. 0.0333 0.0291 0.0307
06:01-07:00, Thu., 11 Dec. 0.0334 0.0282 0.0307
05:01-06:00, Thu., 11 Dec. 0.0330 0.0289 0.0311
04:01-05:00, Thu., 11 Dec. 0.0338 0.0295 0.0310
03:01-04:00, Thu., 11 Dec. 0.0331 0.0294 0.0309
02:01-03:00, Thu., 11 Dec. 0.0335 0.0288 0.0307
01:01-02:00, Thu., 11 Dec. 0.0332 0.0287 0.0308
00:01-01:00, Thu., 11 Dec. 0.0319 0.0274 0.0300
23:01-24:00, Wed., 10 Dec. 0.0327 0.0280 0.0301
22:01-23:00, Wed., 10 Dec. 0.0322 0.0283 0.0300
21:01-22:00, Wed., 10 Dec. 0.0324 0.0278 0.0301
20:01-21:00, Wed., 10 Dec. 0.0324 0.0270 0.0298
19:01-20:00, Wed., 10 Dec. 0.0312 0.0262 0.0295
18:01-19:00, Wed., 10 Dec. 0.0323 0.0277 0.0299
17:01-18:00, Wed., 10 Dec. 0.0320 0.0280 0.0298
16:01-17:00, Wed., 10 Dec. 0.0316 0.0275 0.0295
15:01-16:00, Wed., 10 Dec. 0.0310 0.0271 0.0296
14:01-15:00, Wed., 10 Dec. 0.0329 0.0276 0.0299
13:01-14:00, Wed., 10 Dec. 0.0323 0.0273 0.0299
12:01-13:00, Wed., 10 Dec. 0.0320 0.0283 0.0301
11:01-12:00, Wed., 10 Dec. 0.0327 0.0283 0.0309
10:01-11:00, Wed., 10 Dec. 0.0332 0.0291 0.0312
09:01-10:00, Wed., 10 Dec. 0.0329 0.0292 0.0312
08:01-09:00, Wed., 10 Dec. 0.0339 0.0281 0.0313
07:01-08:00, Wed., 10 Dec. 0.0336 0.0287 0.0314
06:01-07:00, Wed., 10 Dec. 0.0328 0.0292 0.0311
05:01-06:00, Wed., 10 Dec. 0.0326 0.0285 0.0310
04:01-05:00, Wed., 10 Dec. 0.0327 0.0287 0.0308
03:01-04:00, Wed., 10 Dec. 0.0332 0.0276 0.0302
02:01-03:00, Wed., 10 Dec. 0.0318 0.0278 0.0298
01:01-02:00, Wed., 10 Dec. 0.0322 0.0275 0.0298
00:01-01:00, Wed., 10 Dec. 0.0322 0.0270 0.0299
23:01-24:00, Tue., 09 Dec. 0.0322 0.0280 0.0299
22:01-23:00, Tue., 09 Dec. 0.0333 0.0276 0.0300
21:01-22:00, Tue., 09 Dec. 0.0321 0.0273 0.0300
20:01-21:00, Tue., 09 Dec. 0.0324 0.0276 0.0299
19:01-20:00, Tue., 09 Dec. 0.0317 0.0273 0.0297
18:01-19:00, Tue., 09 Dec. 0.0328 0.0277 0.0301
17:01-18:00, Tue., 09 Dec. 0.0318 0.0274 0.0300
16:01-17:00, Tue., 09 Dec. 0.0322 0.0272 0.0299
15:01-16:00, Tue., 09 Dec. 0.0319 0.0276 0.0298
14:01-15:00, Tue., 09 Dec. 0.0328 0.0267 0.0298
13:01-14:00, Tue., 09 Dec. 0.0325 0.0279 0.0303
12:01-13:00, Tue., 09 Dec. 0.0322 0.0278 0.0299
11:01-12:00, Tue., 09 Dec. 0.0334 0.0283 0.0300
10:01-11:00, Tue., 09 Dec. 0.0326 0.0282 0.0306
09:01-10:00, Tue., 09 Dec. 0.0326 0.0282 0.0304
08:01-09:00, Tue., 09 Dec. 0.0328 0.0276 0.0301
07:01-08:00, Tue., 09 Dec. 0.0325 0.0280 0.0299
06:01-07:00, Tue., 09 Dec. 0.0326 0.0272 0.0299
05:01-06:00, Tue., 09 Dec. 0.0325 0.0277 0.0302
04:01-05:00, Tue., 09 Dec. 0.0325 0.0287 0.0303
03:01-04:00, Tue., 09 Dec. 0.0328 0.0283 0.0304
02:01-03:00, Tue., 09 Dec. 0.0323 0.0290 0.0305
01:01-02:00, Tue., 09 Dec. 0.0327 0.0284 0.0308
00:01-01:00, Tue., 09 Dec. 0.0331 0.0289 0.0307
23:01-24:00, Mon., 08 Dec. 0.0325 0.0285 0.0304
22:01-23:00, Mon., 08 Dec. 0.0332 0.0282 0.0307
21:01-22:00, Mon., 08 Dec. 0.0329 0.0286 0.0304
20:01-21:00, Mon., 08 Dec. 0.0321 0.0280 0.0302
19:01-20:00, Mon., 08 Dec. 0.0322 0.0285 0.0303
18:01-19:00, Mon., 08 Dec. 0.0320 0.0280 0.0301
17:01-18:00, Mon., 08 Dec. 0.0314 0.0270 0.0296
16:01-17:00, Mon., 08 Dec. 0.0329 0.0281 0.0299
15:01-16:00, Mon., 08 Dec. 0.0322 0.0266 0.0301
14:01-15:00, Mon., 08 Dec. 0.0326 0.0289 0.0305
13:01-14:00, Mon., 08 Dec. 0.0322 0.0280 0.0303
12:01-13:00, Mon., 08 Dec. 0.0329 0.0286 0.0305
11:01-12:00, Mon., 08 Dec. 0.0325 0.0277 0.0303
10:01-11:00, Mon., 08 Dec. 0.0338 0.0297 0.0314
09:01-10:00, Mon., 08 Dec. 0.0333 0.0286 0.0313
08:01-09:00, Mon., 08 Dec. 0.0333 0.0290 0.0313
07:01-08:00, Mon., 08 Dec. 0.0332 0.0290 0.0313
06:01-07:00, Mon., 08 Dec. 0.0328 0.0280 0.0307
05:01-06:00, Mon., 08 Dec. 0.0329 0.0289 0.0308
04:01-05:00, Mon., 08 Dec. 0.0336 0.0288 0.0314
03:01-04:00, Mon., 08 Dec. 0.0334 0.0289 0.0314
02:01-03:00, Mon., 08 Dec. 0.0333 0.0297 0.0316
01:01-02:00, Mon., 08 Dec. 0.0336 0.0292 0.0315
00:01-01:00, Mon., 08 Dec. 0.0329 0.0283 0.0309
23:01-24:00, Sun., 07 Dec. 0.0331 0.0273 0.0304
22:01-23:00, Sun., 07 Dec. 0.0335 0.0283 0.0303
21:01-22:00, Sun., 07 Dec. 0.0326 0.0277 0.0302
20:01-21:00, Sun., 07 Dec. 0.0318 0.0282 0.0301
19:01-20:00, Sun., 07 Dec. 0.0322 0.0280 0.0299
18:01-19:00, Sun., 07 Dec. 0.0318 0.0275 0.0298
17:01-18:00, Sun., 07 Dec. 0.0315 0.0280 0.0298
16:01-17:00, Sun., 07 Dec. 0.0322 0.0277 0.0300
15:01-16:00, Sun., 07 Dec. 0.0331 0.0286 0.0304
14:01-15:00, Sun., 07 Dec. 0.0328 0.0289 0.0304
13:01-14:00, Sun., 07 Dec. 0.0325 0.0275 0.0306
12:01-13:00, Sun., 07 Dec. 0.0329 0.0279 0.0308
11:01-12:00, Sun., 07 Dec. 0.0329 0.0291 0.0313
10:01-11:00, Sun., 07 Dec. 0.0333 0.0300 0.0317
09:01-10:00, Sun., 07 Dec. 0.0346 0.0301 0.0320
08:01-09:00, Sun., 07 Dec. 0.0339 0.0294 0.0320
07:01-08:00, Sun., 07 Dec. 0.0347 0.0301 0.0321
06:01-07:00, Sun., 07 Dec. 0.0349 0.0303 0.0321
05:01-06:00, Sun., 07 Dec. 0.0339 0.0300 0.0319
04:01-05:00, Sun., 07 Dec. 0.0343 0.0294 0.0322
03:01-04:00, Sun., 07 Dec. 0.0340 0.0302 0.0318
02:01-03:00, Sun., 07 Dec. 0.0342 0.0286 0.0312
01:01-02:00, Sun., 07 Dec. 0.0327 0.0292 0.0312
00:01-01:00, Sun., 07 Dec. 0.0325 0.0289 0.0307
23:01-24:00, Sat., 06 Dec. 0.0325 0.0289 0.0307
22:01-23:00, Sat., 06 Dec. 0.0334 0.0284 0.0304
21:01-22:00, Sat., 06 Dec. 0.0323 0.0282 0.0302
20:01-21:00, Sat., 06 Dec. 0.0329 0.0278 0.0301
19:01-20:00, Sat., 06 Dec. 0.0322 0.0280 0.0297
18:01-19:00, Sat., 06 Dec. 0.0314 0.0273 0.0294
17:01-18:00, Sat., 06 Dec. 0.0313 0.0270 0.0294
16:01-17:00, Sat., 06 Dec. 0.0311 0.0272 0.0294
15:01-16:00, Sat., 06 Dec. 0.0314 0.0268 0.0296
14:01-15:00, Sat., 06 Dec. 0.0318 0.0278 0.0297
13:01-14:00, Sat., 06 Dec. 0.0316 0.0273 0.0300
12:01-13:00, Sat., 06 Dec. 0.0324 0.0280 0.0302
11:01-12:00, Sat., 06 Dec. 0.0322 0.0282 0.0303
10:01-11:00, Sat., 06 Dec. 0.0326 0.0287 0.0306
09:01-10:00, Sat., 06 Dec. 0.0331 0.0284 0.0306
08:01-09:00, Sat., 06 Dec. 0.0330 0.0286 0.0307
07:01-08:00, Sat., 06 Dec. 0.0326 0.0288 0.0306
06:01-07:00, Sat., 06 Dec. 0.0318 0.0270 0.0300
05:01-06:00, Sat., 06 Dec. 0.0326 0.0288 0.0305
04:01-05:00, Sat., 06 Dec. 0.0323 0.0283 0.0302
03:01-04:00, Sat., 06 Dec. 0.0327 0.0284 0.0302
02:01-03:00, Sat., 06 Dec. 0.0322 0.0278 0.0304
01:01-02:00, Sat., 06 Dec. 0.0323 0.0278 0.0304
00:01-01:00, Sat., 06 Dec. 0.0324 0.0280 0.0303
23:01-24:00, Fri., 05 Dec. 0.0326 0.0282 0.0300
22:01-23:00, Fri., 05 Dec. 0.0316 0.0280 0.0298
21:01-22:00, Fri., 05 Dec. 0.0324 0.0273 0.0296
20:01-21:00, Fri., 05 Dec. 0.0318 0.0274 0.0298
19:01-20:00, Fri., 05 Dec. 0.0313 0.0273 0.0298
18:01-19:00, Fri., 05 Dec. 0.0317 0.0272 0.0297
17:01-18:00, Fri., 05 Dec. 0.0318 0.0283 0.0301
16:01-17:00, Fri., 05 Dec. 0.0322 0.0276 0.0299
15:01-16:00, Fri., 05 Dec. 0.0320 0.0275 0.0300
14:01-15:00, Fri., 05 Dec. 0.0323 0.0270 0.0299
13:01-14:00, Fri., 05 Dec. 0.0325 0.0273 0.0301
12:01-13:00, Fri., 05 Dec. 0.0329 0.0286 0.0306
11:01-12:00, Fri., 05 Dec. 0.0332 0.0285 0.0306
10:01-11:00, Fri., 05 Dec. 0.0325 0.0283 0.0305
09:01-10:00, Fri., 05 Dec. 0.0329 0.0290 0.0308
08:01-09:00, Fri., 05 Dec. 0.0330 0.0284 0.0307
07:01-08:00, Fri., 05 Dec. 0.0328 0.0286 0.0306
06:01-07:00, Fri., 05 Dec. 0.0329 0.0287 0.0306
05:01-06:00, Fri., 05 Dec. 0.0331 0.0280 0.0306
04:01-05:00, Fri., 05 Dec. 0.0326 0.0285 0.0308
03:01-04:00, Fri., 05 Dec. 0.0336 0.0283 0.0308
02:01-03:00, Fri., 05 Dec. 0.0325 0.0280 0.0301
01:01-02:00, Fri., 05 Dec. 0.0325 0.0276 0.0301
00:01-01:00, Fri., 05 Dec. 0.0322 0.0274 0.0298
23:01-24:00, Thu., 04 Dec. 0.0324 0.0269 0.0297
22:01-23:00, Thu., 04 Dec. 0.0317 0.0277 0.0296
21:01-22:00, Thu., 04 Dec. 0.0314 0.0271 0.0295
20:01-21:00, Thu., 04 Dec. 0.0311 0.0273 0.0293
19:01-20:00, Thu., 04 Dec. 0.0309 0.0275 0.0290
18:01-19:00, Thu., 04 Dec. 0.0314 0.0270 0.0292
17:01-18:00, Thu., 04 Dec. 0.0307 0.0259 0.0290
16:01-17:00, Thu., 04 Dec. 0.0308 0.0273 0.0293
15:01-16:00, Thu., 04 Dec. 0.0312 0.0267 0.0292
14:01-15:00, Thu., 04 Dec. 0.0322 0.0274 0.0297
13:01-14:00, Thu., 04 Dec. 0.0314 0.0278 0.0297
12:01-13:00, Thu., 04 Dec. 0.0322 0.0275 0.0299
11:01-12:00, Thu., 04 Dec. 0.0324 0.0280 0.0302
10:01-11:00, Thu., 04 Dec. 0.0321 0.0287 0.0302
09:01-10:00, Thu., 04 Dec. 0.0318 0.0276 0.0300
08:01-09:00, Thu., 04 Dec. 0.0313 0.0274 0.0295
07:01-08:00, Thu., 04 Dec. 0.0325 0.0272 0.0294
06:01-07:00, Thu., 04 Dec. 0.0325 0.0273 0.0295
05:01-06:00, Thu., 04 Dec. 0.0318 0.0275 0.0296
04:01-05:00, Thu., 04 Dec. 0.0321 0.0276 0.0299
03:01-04:00, Thu., 04 Dec. 0.0320 0.0274 0.0298
02:01-03:00, Thu., 04 Dec. 0.0325 0.0275 0.0299
01:01-02:00, Thu., 04 Dec. 0.0328 0.0276 0.0298
00:01-01:00, Thu., 04 Dec. 0.0322 0.0277 0.0303
23:01-24:00, Wed., 03 Dec. 0.0326 0.0283 0.0306
22:01-23:00, Wed., 03 Dec. 0.0342 0.0289 0.0311
21:01-22:00, Wed., 03 Dec. 0.0331 0.0283 0.0307
20:01-21:00, Wed., 03 Dec. 0.0323 0.0278 0.0299
19:01-20:00, Wed., 03 Dec. 0.0328 0.0289 0.0307
18:01-19:00, Wed., 03 Dec. 0.0336 0.0289 0.0307
17:01-18:00, Wed., 03 Dec. 0.0332 0.0283 0.0307
16:01-17:00, Wed., 03 Dec. 0.0325 0.0287 0.0305
15:01-16:00, Wed., 03 Dec. 0.0339 0.0290 0.0313
14:01-15:00, Wed., 03 Dec. 0.0343 0.0295 0.0323
13:01-14:00, Wed., 03 Dec. 0.0346 0.0304 0.0323
12:01-13:00, Wed., 03 Dec. 0.0340 0.0290 0.0316