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, Wed., 22 Jan. 0.0322 0.0273 0.0293
08:01-09:00, Wed., 22 Jan. 0.0312 0.0276 0.0290
07:01-08:00, Wed., 22 Jan. 0.0310 0.0270 0.0289
06:01-07:00, Wed., 22 Jan. 0.0315 0.0273 0.0291
05:01-06:00, Wed., 22 Jan. 0.0311 0.0263 0.0289
04:01-05:00, Wed., 22 Jan. 0.0311 0.0273 0.0289
03:01-04:00, Wed., 22 Jan. 0.0325 0.0268 0.0289
02:01-03:00, Wed., 22 Jan. 0.0310 0.0272 0.0290
01:01-02:00, Wed., 22 Jan. 0.0310 0.0274 0.0291
00:01-01:00, Wed., 22 Jan. 0.0311 0.0270 0.0291
23:01-24:00, Tue., 21 Jan. 0.0314 0.0275 0.0293
22:01-23:00, Tue., 21 Jan. 0.0325 0.0272 0.0294
21:01-22:00, Tue., 21 Jan. 0.0310 0.0275 0.0293
20:01-21:00, Tue., 21 Jan. 0.0312 0.0272 0.0293
19:01-20:00, Tue., 21 Jan. 0.0316 0.0268 0.0292
18:01-19:00, Tue., 21 Jan. 0.0310 0.0269 0.0289
17:01-18:00, Tue., 21 Jan. 0.0309 0.0266 0.0286
16:01-17:00, Tue., 21 Jan. 0.0301 0.0263 0.0285
15:01-16:00, Tue., 21 Jan. 0.0307 0.0262 0.0288
14:01-15:00, Tue., 21 Jan. 0.0312 0.0271 0.0292
13:01-14:00, Tue., 21 Jan. 0.0323 0.0275 0.0291
12:01-13:00, Tue., 21 Jan. 0.0321 0.0263 0.0295
11:01-12:00, Tue., 21 Jan. 0.0322 0.0272 0.0293
10:01-11:00, Tue., 21 Jan. 0.0308 0.0276 0.0294
09:01-10:00, Tue., 21 Jan. 0.0311 0.0273 0.0290
08:01-09:00, Tue., 21 Jan. 0.0314 0.0276 0.0293
07:01-08:00, Tue., 21 Jan. 0.0315 0.0269 0.0293
06:01-07:00, Tue., 21 Jan. 0.0317 0.0276 0.0294
05:01-06:00, Tue., 21 Jan. 0.0331 0.0279 0.0298
04:01-05:00, Tue., 21 Jan. 0.0326 0.0283 0.0304
03:01-04:00, Tue., 21 Jan. 0.0320 0.0270 0.0294
02:01-03:00, Tue., 21 Jan. 0.0314 0.0279 0.0294
01:01-02:00, Tue., 21 Jan. 0.0321 0.0269 0.0291
00:01-01:00, Tue., 21 Jan. 0.0315 0.0264 0.0291
23:01-24:00, Mon., 20 Jan. 0.0322 0.0271 0.0294
22:01-23:00, Mon., 20 Jan. 0.0343 0.0289 0.0314
21:01-22:00, Mon., 20 Jan. 0.0430 0.0318 0.0364
20:01-21:00, Mon., 20 Jan. 0.0587 0.0409 0.0496
19:01-20:00, Mon., 20 Jan. 0.0588 0.0363 0.0516
18:01-19:00, Mon., 20 Jan. 0.0363 0.0275 0.0311
17:01-18:00, Mon., 20 Jan. 0.0306 0.0273 0.0291
16:01-17:00, Mon., 20 Jan. 0.0311 0.0273 0.0291
15:01-16:00, Mon., 20 Jan. 0.0312 0.0273 0.0295
14:01-15:00, Mon., 20 Jan. 0.0322 0.0270 0.0294
13:01-14:00, Mon., 20 Jan. 0.0310 0.0283 0.0295
12:01-13:00, Mon., 20 Jan. 0.0319 0.0273 0.0298
11:01-12:00, Mon., 20 Jan. 0.0326 0.0280 0.0302
10:01-11:00, Mon., 20 Jan. 0.0335 0.0284 0.0307
09:01-10:00, Mon., 20 Jan. 0.0334 0.0281 0.0309
08:01-09:00, Mon., 20 Jan. 0.0345 0.0285 0.0320
07:01-08:00, Mon., 20 Jan. 0.0369 0.0315 0.0340
06:01-07:00, Mon., 20 Jan. 0.0344 0.0280 0.0312
05:01-06:00, Mon., 20 Jan. 0.0350 0.0288 0.0314
04:01-05:00, Mon., 20 Jan. 0.0322 0.0283 0.0304
03:01-04:00, Mon., 20 Jan. 0.0322 0.0284 0.0304
02:01-03:00, Mon., 20 Jan. 0.0326 0.0281 0.0305
01:01-02:00, Mon., 20 Jan. 0.0336 0.0280 0.0301
00:01-01:00, Mon., 20 Jan. 0.0328 0.0283 0.0302
23:01-24:00, Sun., 19 Jan. 0.0325 0.0287 0.0306
22:01-23:00, Sun., 19 Jan. 0.0338 0.0292 0.0310
21:01-22:00, Sun., 19 Jan. 0.0322 0.0280 0.0302
20:01-21:00, Sun., 19 Jan. 0.0322 0.0281 0.0302
19:01-20:00, Sun., 19 Jan. 0.0324 0.0280 0.0303
18:01-19:00, Sun., 19 Jan. 0.0326 0.0289 0.0301
17:01-18:00, Sun., 19 Jan. 0.0335 0.0283 0.0303
16:01-17:00, Sun., 19 Jan. 0.0320 0.0281 0.0303
15:01-16:00, Sun., 19 Jan. 0.0332 0.0278 0.0301
14:01-15:00, Sun., 19 Jan. 0.0326 0.0276 0.0303
13:01-14:00, Sun., 19 Jan. 0.0326 0.0284 0.0305
12:01-13:00, Sun., 19 Jan. 0.0332 0.0281 0.0305
11:01-12:00, Sun., 19 Jan. 0.0329 0.0281 0.0307
10:01-11:00, Sun., 19 Jan. 0.0327 0.0288 0.0309
09:01-10:00, Sun., 19 Jan. 0.0329 0.0289 0.0312
08:01-09:00, Sun., 19 Jan. 0.0336 0.0289 0.0312
07:01-08:00, Sun., 19 Jan. 0.0343 0.0294 0.0312
06:01-07:00, Sun., 19 Jan. 0.0332 0.0285 0.0309
05:01-06:00, Sun., 19 Jan. 0.0326 0.0279 0.0309
04:01-05:00, Sun., 19 Jan. 0.0329 0.0288 0.0306
03:01-04:00, Sun., 19 Jan. 0.0333 0.0289 0.0311
02:01-03:00, Sun., 19 Jan. 0.0326 0.0287 0.0308
01:01-02:00, Sun., 19 Jan. 0.0330 0.0277 0.0304
00:01-01:00, Sun., 19 Jan. 0.0318 0.0274 0.0295
23:01-24:00, Sat., 18 Jan. 0.0310 0.0273 0.0293
22:01-23:00, Sat., 18 Jan. 0.0324 0.0269 0.0292
21:01-22:00, Sat., 18 Jan. 0.0315 0.0270 0.0292
20:01-21:00, Sat., 18 Jan. 0.0318 0.0276 0.0295
19:01-20:00, Sat., 18 Jan. 0.0314 0.0276 0.0294
18:01-19:00, Sat., 18 Jan. 0.0309 0.0273 0.0292
17:01-18:00, Sat., 18 Jan. 0.0322 0.0270 0.0292
16:01-17:00, Sat., 18 Jan. 0.0322 0.0268 0.0292
15:01-16:00, Sat., 18 Jan. 0.0314 0.0274 0.0292
14:01-15:00, Sat., 18 Jan. 0.0312 0.0278 0.0294
13:01-14:00, Sat., 18 Jan. 0.0322 0.0275 0.0297
12:01-13:00, Sat., 18 Jan. 0.0318 0.0270 0.0294
11:01-12:00, Sat., 18 Jan. 0.0318 0.0271 0.0294
10:01-11:00, Sat., 18 Jan. 0.0315 0.0274 0.0294
09:01-10:00, Sat., 18 Jan. 0.0311 0.0264 0.0291
08:01-09:00, Sat., 18 Jan. 0.0311 0.0274 0.0292
07:01-08:00, Sat., 18 Jan. 0.0311 0.0263 0.0293
06:01-07:00, Sat., 18 Jan. 0.0309 0.0269 0.0290
05:01-06:00, Sat., 18 Jan. 0.0312 0.0272 0.0291
04:01-05:00, Sat., 18 Jan. 0.0312 0.0271 0.0292
03:01-04:00, Sat., 18 Jan. 0.0308 0.0268 0.0290
02:01-03:00, Sat., 18 Jan. 0.0310 0.0273 0.0289
01:01-02:00, Sat., 18 Jan. 0.0315 0.0260 0.0289
00:01-01:00, Sat., 18 Jan. 0.0309 0.0276 0.0290
23:01-24:00, Fri., 17 Jan. 0.0314 0.0269 0.0289
22:01-23:00, Fri., 17 Jan. 0.0308 0.0273 0.0291
21:01-22:00, Fri., 17 Jan. 0.0310 0.0269 0.0290
20:01-21:00, Fri., 17 Jan. 0.0308 0.0274 0.0290
19:01-20:00, Fri., 17 Jan. 0.0313 0.0274 0.0294
18:01-19:00, Fri., 17 Jan. 0.0315 0.0267 0.0289
17:01-18:00, Fri., 17 Jan. 0.0304 0.0267 0.0288
16:01-17:00, Fri., 17 Jan. 0.0310 0.0266 0.0289
15:01-16:00, Fri., 17 Jan. 0.0315 0.0273 0.0292
14:01-15:00, Fri., 17 Jan. 0.0320 0.0263 0.0293
13:01-14:00, Fri., 17 Jan. 0.0304 0.0270 0.0290
12:01-13:00, Fri., 17 Jan. 0.0310 0.0269 0.0295
11:01-12:00, Fri., 17 Jan. 0.0318 0.0273 0.0294
10:01-11:00, Fri., 17 Jan. 0.0316 0.0276 0.0296
09:01-10:00, Fri., 17 Jan. 0.0312 0.0271 0.0294
08:01-09:00, Fri., 17 Jan. 0.0323 0.0273 0.0295
07:01-08:00, Fri., 17 Jan. 0.0316 0.0280 0.0294
06:01-07:00, Fri., 17 Jan. 0.0316 0.0274 0.0297
05:01-06:00, Fri., 17 Jan. 0.0325 0.0273 0.0297
04:01-05:00, Fri., 17 Jan. 0.0325 0.0274 0.0303
03:01-04:00, Fri., 17 Jan. 0.0323 0.0285 0.0302
02:01-03:00, Fri., 17 Jan. 0.0324 0.0284 0.0303
01:01-02:00, Fri., 17 Jan. 0.0323 0.0281 0.0299
00:01-01:00, Fri., 17 Jan. 0.0323 0.0280 0.0299
23:01-24:00, Thu., 16 Jan. 0.0323 0.0273 0.0296
22:01-23:00, Thu., 16 Jan. 0.0315 0.0277 0.0296
21:01-22:00, Thu., 16 Jan. 0.0308 0.0266 0.0293
20:01-21:00, Thu., 16 Jan. 0.0315 0.0272 0.0292
19:01-20:00, Thu., 16 Jan. 0.0311 0.0263 0.0295
18:01-19:00, Thu., 16 Jan. 0.0318 0.0270 0.0295
17:01-18:00, Thu., 16 Jan. 0.0324 0.0276 0.0295
16:01-17:00, Thu., 16 Jan. 0.0315 0.0274 0.0296
15:01-16:00, Thu., 16 Jan. 0.0314 0.0273 0.0293
14:01-15:00, Thu., 16 Jan. 0.0326 0.0274 0.0294
13:01-14:00, Thu., 16 Jan. 0.0315 0.0274 0.0295
12:01-13:00, Thu., 16 Jan. 0.0311 0.0271 0.0292
11:01-12:00, Thu., 16 Jan. 0.0313 0.0273 0.0293
10:01-11:00, Thu., 16 Jan. 0.0311 0.0275 0.0297
09:01-10:00, Thu., 16 Jan. 0.0317 0.0278 0.0297
08:01-09:00, Thu., 16 Jan. 0.0322 0.0271 0.0299
07:01-08:00, Thu., 16 Jan. 0.0325 0.0269 0.0297
06:01-07:00, Thu., 16 Jan. 0.0315 0.0273 0.0296
05:01-06:00, Thu., 16 Jan. 0.0315 0.0283 0.0300
04:01-05:00, Thu., 16 Jan. 0.0326 0.0282 0.0300
03:01-04:00, Thu., 16 Jan. 0.0321 0.0281 0.0300
02:01-03:00, Thu., 16 Jan. 0.0334 0.0279 0.0301
01:01-02:00, Thu., 16 Jan. 0.0315 0.0281 0.0298
00:01-01:00, Thu., 16 Jan. 0.0325 0.0283 0.0302
23:01-24:00, Wed., 15 Jan. 0.0329 0.0284 0.0306
22:01-23:00, Wed., 15 Jan. 0.0335 0.0280 0.0303
21:01-22:00, Wed., 15 Jan. 0.0334 0.0281 0.0305
20:01-21:00, Wed., 15 Jan. 0.0328 0.0279 0.0304
19:01-20:00, Wed., 15 Jan. 0.0322 0.0279 0.0301
18:01-19:00, Wed., 15 Jan. 0.0316 0.0271 0.0298
17:01-18:00, Wed., 15 Jan. 0.0325 0.0276 0.0299
16:01-17:00, Wed., 15 Jan. 0.0314 0.0276 0.0299
15:01-16:00, Wed., 15 Jan. 0.0323 0.0276 0.0299
14:01-15:00, Wed., 15 Jan. 0.0320 0.0280 0.0302
13:01-14:00, Wed., 15 Jan. 0.0332 0.0279 0.0300
12:01-13:00, Wed., 15 Jan. 0.0321 0.0273 0.0298
11:01-12:00, Wed., 15 Jan. 0.0321 0.0279 0.0298
10:01-11:00, Wed., 15 Jan. 0.0326 0.0279 0.0307
09:01-10:00, Wed., 15 Jan. 0.0332 0.0289 0.0311
08:01-09:00, Wed., 15 Jan. 0.0334 0.0283 0.0306
07:01-08:00, Wed., 15 Jan. 0.0325 0.0282 0.0302
06:01-07:00, Wed., 15 Jan. 0.0331 0.0282 0.0306
05:01-06:00, Wed., 15 Jan. 0.0321 0.0276 0.0301
04:01-05:00, Wed., 15 Jan. 0.0325 0.0279 0.0302
03:01-04:00, Wed., 15 Jan. 0.0328 0.0282 0.0303
02:01-03:00, Wed., 15 Jan. 0.0325 0.0278 0.0303
01:01-02:00, Wed., 15 Jan. 0.0329 0.0276 0.0303
00:01-01:00, Wed., 15 Jan. 0.0324 0.0284 0.0300
23:01-24:00, Tue., 14 Jan. 0.0318 0.0277 0.0298
22:01-23:00, Tue., 14 Jan. 0.0318 0.0276 0.0294
21:01-22:00, Tue., 14 Jan. 0.0313 0.0269 0.0295
20:01-21:00, Tue., 14 Jan. 0.0312 0.0273 0.0295
19:01-20:00, Tue., 14 Jan. 0.0308 0.0278 0.0294
18:01-19:00, Tue., 14 Jan. 0.0325 0.0263 0.0289
17:01-18:00, Tue., 14 Jan. 0.0311 0.0268 0.0290
16:01-17:00, Tue., 14 Jan. 0.0320 0.0272 0.0293
15:01-16:00, Tue., 14 Jan. 0.0308 0.0270 0.0292
14:01-15:00, Tue., 14 Jan. 0.0315 0.0274 0.0295
13:01-14:00, Tue., 14 Jan. 0.0318 0.0270 0.0294
12:01-13:00, Tue., 14 Jan. 0.0323 0.0278 0.0299
11:01-12:00, Tue., 14 Jan. 0.0319 0.0279 0.0300
10:01-11:00, Tue., 14 Jan. 0.0328 0.0273 0.0299
09:01-10:00, Tue., 14 Jan. 0.0323 0.0280 0.0300
08:01-09:00, Tue., 14 Jan. 0.0318 0.0283 0.0296
07:01-08:00, Tue., 14 Jan. 0.0313 0.0270 0.0291
06:01-07:00, Tue., 14 Jan. 0.0316 0.0269 0.0289
05:01-06:00, Tue., 14 Jan. 0.0315 0.0266 0.0290
04:01-05:00, Tue., 14 Jan. 0.0313 0.0266 0.0289
03:01-04:00, Tue., 14 Jan. 0.0307 0.0270 0.0288
02:01-03:00, Tue., 14 Jan. 0.0311 0.0266 0.0286
01:01-02:00, Tue., 14 Jan. 0.0312 0.0265 0.0287
00:01-01:00, Tue., 14 Jan. 0.0305 0.0263 0.0286
23:01-24:00, Mon., 13 Jan. 0.0308 0.0267 0.0288
22:01-23:00, Mon., 13 Jan. 0.0305 0.0270 0.0287
21:01-22:00, Mon., 13 Jan. 0.0306 0.0263 0.0286
20:01-21:00, Mon., 13 Jan. 0.0310 0.0261 0.0287
19:01-20:00, Mon., 13 Jan. 0.0307 0.0263 0.0288
18:01-19:00, Mon., 13 Jan. 0.0303 0.0267 0.0285
17:01-18:00, Mon., 13 Jan. 0.0323 0.0269 0.0288
16:01-17:00, Mon., 13 Jan. 0.0308 0.0267 0.0286
15:01-16:00, Mon., 13 Jan. 0.0311 0.0273 0.0290
14:01-15:00, Mon., 13 Jan. 0.0321 0.0276 0.0294
13:01-14:00, Mon., 13 Jan. 0.0314 0.0273 0.0294
12:01-13:00, Mon., 13 Jan. 0.0325 0.0268 0.0296
11:01-12:00, Mon., 13 Jan. 0.0318 0.0276 0.0299
10:01-11:00, Mon., 13 Jan. 0.0326 0.0283 0.0306
09:01-10:00, Mon., 13 Jan. 0.0333 0.0283 0.0304
08:01-09:00, Mon., 13 Jan. 0.0313 0.0274 0.0299
07:01-08:00, Mon., 13 Jan. 0.0322 0.0281 0.0303
06:01-07:00, Mon., 13 Jan. 0.0320 0.0279 0.0301
05:01-06:00, Mon., 13 Jan. 0.0318 0.0281 0.0300
04:01-05:00, Mon., 13 Jan. 0.0318 0.0279 0.0301
03:01-04:00, Mon., 13 Jan. 0.0322 0.0285 0.0302
02:01-03:00, Mon., 13 Jan. 0.0326 0.0283 0.0302
01:01-02:00, Mon., 13 Jan. 0.0325 0.0282 0.0300
00:01-01:00, Mon., 13 Jan. 0.0325 0.0282 0.0301
23:01-24:00, Sun., 12 Jan. 0.0318 0.0273 0.0299
22:01-23:00, Sun., 12 Jan. 0.0318 0.0280 0.0298
21:01-22:00, Sun., 12 Jan. 0.0313 0.0278 0.0296
20:01-21:00, Sun., 12 Jan. 0.0318 0.0267 0.0296
19:01-20:00, Sun., 12 Jan. 0.0318 0.0275 0.0297
18:01-19:00, Sun., 12 Jan. 0.0325 0.0278 0.0300
17:01-18:00, Sun., 12 Jan. 0.0322 0.0278 0.0299
16:01-17:00, Sun., 12 Jan. 0.0316 0.0279 0.0298
15:01-16:00, Sun., 12 Jan. 0.0326 0.0270 0.0302
14:01-15:00, Sun., 12 Jan. 0.0326 0.0287 0.0304
13:01-14:00, Sun., 12 Jan. 0.0326 0.0285 0.0305
12:01-13:00, Sun., 12 Jan. 0.0325 0.0283 0.0303
11:01-12:00, Sun., 12 Jan. 0.0323 0.0288 0.0307
10:01-11:00, Sun., 12 Jan. 0.0319 0.0289 0.0303