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., 29 Mar. 0.0308 0.0253 0.0282
20:01-21:00, Sat., 29 Mar. 0.0308 0.0262 0.0284
19:01-20:00, Sat., 29 Mar. 0.0313 0.0271 0.0291
18:01-19:00, Sat., 29 Mar. 0.0345 0.0279 0.0312
17:01-18:00, Sat., 29 Mar. 0.0377 0.0308 0.0341
16:01-17:00, Sat., 29 Mar. 0.0374 0.0326 0.0350
15:01-16:00, Sat., 29 Mar. 0.0378 0.0302 0.0342
14:01-15:00, Sat., 29 Mar. 0.0419 0.0346 0.0382
13:01-14:00, Sat., 29 Mar. 0.0462 0.0398 0.0425
12:01-13:00, Sat., 29 Mar. 0.0447 0.0390 0.0421
11:01-12:00, Sat., 29 Mar. 0.0528 0.0425 0.0467
10:01-11:00, Sat., 29 Mar. 0.0540 0.0439 0.0496
09:01-10:00, Sat., 29 Mar. 0.0513 0.0416 0.0460
08:01-09:00, Sat., 29 Mar. 0.0542 0.0464 0.0497
07:01-08:00, Sat., 29 Mar. 0.0516 0.0440 0.0473
06:01-07:00, Sat., 29 Mar. 0.0511 0.0384 0.0468
05:01-06:00, Sat., 29 Mar. 0.0457 0.0382 0.0420
04:01-05:00, Sat., 29 Mar. 0.0471 0.0293 0.0368
03:01-04:00, Sat., 29 Mar. 0.0324 0.0278 0.0299
02:01-03:00, Sat., 29 Mar. 0.0314 0.0271 0.0290
01:01-02:00, Sat., 29 Mar. 0.0308 0.0267 0.0292
00:01-01:00, Sat., 29 Mar. 0.0313 0.0270 0.0295
23:01-24:00, Fri., 28 Mar. 0.0315 0.0274 0.0297
22:01-23:00, Fri., 28 Mar. 0.0315 0.0276 0.0299
21:01-22:00, Fri., 28 Mar. 0.0325 0.0282 0.0305
20:01-21:00, Fri., 28 Mar. 0.0330 0.0290 0.0307
19:01-20:00, Fri., 28 Mar. 0.0322 0.0282 0.0304
18:01-19:00, Fri., 28 Mar. 0.0315 0.0270 0.0295
17:01-18:00, Fri., 28 Mar. 0.0310 0.0262 0.0289
16:01-17:00, Fri., 28 Mar. 0.0325 0.0276 0.0293
15:01-16:00, Fri., 28 Mar. 0.0318 0.0269 0.0293
14:01-15:00, Fri., 28 Mar. 0.0316 0.0283 0.0297
13:01-14:00, Fri., 28 Mar. 0.0322 0.0276 0.0299
12:01-13:00, Fri., 28 Mar. 0.0317 0.0270 0.0295
11:01-12:00, Fri., 28 Mar. 0.0312 0.0256 0.0292
10:01-11:00, Fri., 28 Mar. 0.0323 0.0268 0.0302
09:01-10:00, Fri., 28 Mar. 0.0370 0.0295 0.0334
08:01-09:00, Fri., 28 Mar. 0.0483 0.0342 0.0422
07:01-08:00, Fri., 28 Mar. 0.0457 0.0386 0.0425
06:01-07:00, Fri., 28 Mar. 0.0408 0.0273 0.0347
05:01-06:00, Fri., 28 Mar. 0.0319 0.0273 0.0293
04:01-05:00, Fri., 28 Mar. 0.0315 0.0275 0.0292
03:01-04:00, Fri., 28 Mar. 0.0323 0.0273 0.0293
02:01-03:00, Fri., 28 Mar. 0.0312 0.0267 0.0289
01:01-02:00, Fri., 28 Mar. 0.0308 0.0264 0.0288
00:01-01:00, Fri., 28 Mar. 0.0308 0.0260 0.0287
23:01-24:00, Thu., 27 Mar. 0.0314 0.0272 0.0291
22:01-23:00, Thu., 27 Mar. 0.0315 0.0270 0.0291
21:01-22:00, Thu., 27 Mar. 0.0311 0.0268 0.0291
20:01-21:00, Thu., 27 Mar. 0.0311 0.0270 0.0289
19:01-20:00, Thu., 27 Mar. 0.0308 0.0266 0.0290
18:01-19:00, Thu., 27 Mar. 0.0317 0.0270 0.0293
17:01-18:00, Thu., 27 Mar. 0.0315 0.0276 0.0293
16:01-17:00, Thu., 27 Mar. 0.0318 0.0267 0.0295
15:01-16:00, Thu., 27 Mar. 0.0315 0.0260 0.0294
14:01-15:00, Thu., 27 Mar. 0.0325 0.0270 0.0296
13:01-14:00, Thu., 27 Mar. 0.0318 0.0281 0.0299
12:01-13:00, Thu., 27 Mar. 0.0313 0.0266 0.0292
11:01-12:00, Thu., 27 Mar. 0.0316 0.0270 0.0298
10:01-11:00, Thu., 27 Mar. 0.0322 0.0275 0.0295
09:01-10:00, Thu., 27 Mar. 0.0315 0.0271 0.0294
08:01-09:00, Thu., 27 Mar. 0.0316 0.0273 0.0292
07:01-08:00, Thu., 27 Mar. 0.0309 0.0274 0.0291
06:01-07:00, Thu., 27 Mar. 0.0314 0.0271 0.0291
05:01-06:00, Thu., 27 Mar. 0.0310 0.0269 0.0291
04:01-05:00, Thu., 27 Mar. 0.0317 0.0268 0.0294
03:01-04:00, Thu., 27 Mar. 0.0311 0.0275 0.0293
02:01-03:00, Thu., 27 Mar. 0.0311 0.0273 0.0294
01:01-02:00, Thu., 27 Mar. 0.0315 0.0268 0.0293
00:01-01:00, Thu., 27 Mar. 0.0318 0.0274 0.0294
23:01-24:00, Wed., 26 Mar. 0.0317 0.0268 0.0296
22:01-23:00, Wed., 26 Mar. 0.0318 0.0275 0.0298
21:01-22:00, Wed., 26 Mar. 0.0318 0.0281 0.0298
20:01-21:00, Wed., 26 Mar. 0.0320 0.0276 0.0297
19:01-20:00, Wed., 26 Mar. 0.0319 0.0273 0.0294
18:01-19:00, Wed., 26 Mar. 0.0313 0.0270 0.0293
17:01-18:00, Wed., 26 Mar. 0.0311 0.0273 0.0292
16:01-17:00, Wed., 26 Mar. 0.0321 0.0267 0.0297
15:01-16:00, Wed., 26 Mar. 0.0331 0.0275 0.0300
14:01-15:00, Wed., 26 Mar. 0.0322 0.0278 0.0302
13:01-14:00, Wed., 26 Mar. 0.0333 0.0277 0.0300
12:01-13:00, Wed., 26 Mar. 0.0316 0.0281 0.0297
11:01-12:00, Wed., 26 Mar. 0.0326 0.0278 0.0300
10:01-11:00, Wed., 26 Mar. 0.0326 0.0278 0.0305
09:01-10:00, Wed., 26 Mar. 0.0325 0.0273 0.0295
08:01-09:00, Wed., 26 Mar. 0.0308 0.0274 0.0294
07:01-08:00, Wed., 26 Mar. 0.0326 0.0273 0.0293
06:01-07:00, Wed., 26 Mar. 0.0312 0.0276 0.0294
05:01-06:00, Wed., 26 Mar. 0.0313 0.0268 0.0292
04:01-05:00, Wed., 26 Mar. 0.0317 0.0277 0.0293
03:01-04:00, Wed., 26 Mar. 0.0321 0.0275 0.0291
02:01-03:00, Wed., 26 Mar. 0.0314 0.0270 0.0292
01:01-02:00, Wed., 26 Mar. 0.0312 0.0271 0.0292
00:01-01:00, Wed., 26 Mar. 0.0318 0.0273 0.0295
23:01-24:00, Tue., 25 Mar. 0.0320 0.0262 0.0295
22:01-23:00, Tue., 25 Mar. 0.0320 0.0276 0.0297
21:01-22:00, Tue., 25 Mar. 0.0312 0.0274 0.0295
20:01-21:00, Tue., 25 Mar. 0.0315 0.0276 0.0294
19:01-20:00, Tue., 25 Mar. 0.0327 0.0273 0.0293
18:01-19:00, Tue., 25 Mar. 0.0311 0.0279 0.0295
17:01-18:00, Tue., 25 Mar. 0.0317 0.0270 0.0294
16:01-17:00, Tue., 25 Mar. 0.0317 0.0281 0.0297
15:01-16:00, Tue., 25 Mar. 0.0327 0.0275 0.0297
14:01-15:00, Tue., 25 Mar. 0.0331 0.0283 0.0301
13:01-14:00, Tue., 25 Mar. 0.0315 0.0276 0.0294
12:01-13:00, Tue., 25 Mar. 0.0315 0.0281 0.0298
11:01-12:00, Tue., 25 Mar. 0.0314 0.0271 0.0293
10:01-11:00, Tue., 25 Mar. 0.0315 0.0268 0.0293
09:01-10:00, Tue., 25 Mar. 0.0325 0.0270 0.0293
08:01-09:00, Tue., 25 Mar. 0.0315 0.0270 0.0291
07:01-08:00, Tue., 25 Mar. 0.0324 0.0258 0.0293
06:01-07:00, Tue., 25 Mar. 0.0308 0.0277 0.0291
05:01-06:00, Tue., 25 Mar. 0.0313 0.0273 0.0293
04:01-05:00, Tue., 25 Mar. 0.0313 0.0271 0.0294
03:01-04:00, Tue., 25 Mar. 0.0310 0.0270 0.0292
02:01-03:00, Tue., 25 Mar. 0.0311 0.0274 0.0295
01:01-02:00, Tue., 25 Mar. 0.0320 0.0272 0.0292
00:01-01:00, Tue., 25 Mar. 0.0304 0.0274 0.0291
23:01-24:00, Mon., 24 Mar. 0.0311 0.0279 0.0295
22:01-23:00, Mon., 24 Mar. 0.0311 0.0270 0.0291
21:01-22:00, Mon., 24 Mar. 0.0323 0.0271 0.0292
20:01-21:00, Mon., 24 Mar. 0.0316 0.0269 0.0291
19:01-20:00, Mon., 24 Mar. 0.0308 0.0263 0.0290
18:01-19:00, Mon., 24 Mar. 0.0311 0.0273 0.0291
17:01-18:00, Mon., 24 Mar. 0.0315 0.0269 0.0290
16:01-17:00, Mon., 24 Mar. 0.0314 0.0263 0.0291
15:01-16:00, Mon., 24 Mar. 0.0311 0.0273 0.0292
14:01-15:00, Mon., 24 Mar. 0.0307 0.0271 0.0292
13:01-14:00, Mon., 24 Mar. 0.0312 0.0270 0.0291
12:01-13:00, Mon., 24 Mar. 0.0308 0.0272 0.0291
11:01-12:00, Mon., 24 Mar. 0.0311 0.0268 0.0291
10:01-11:00, Mon., 24 Mar. 0.0309 0.0268 0.0286
09:01-10:00, Mon., 24 Mar. 0.0310 0.0267 0.0285
08:01-09:00, Mon., 24 Mar. 0.0308 0.0270 0.0287
07:01-08:00, Mon., 24 Mar. 0.0311 0.0262 0.0284
06:01-07:00, Mon., 24 Mar. 0.0305 0.0266 0.0289
05:01-06:00, Mon., 24 Mar. 0.0308 0.0270 0.0289
04:01-05:00, Mon., 24 Mar. 0.0311 0.0269 0.0290
03:01-04:00, Mon., 24 Mar. 0.0311 0.0265 0.0289
02:01-03:00, Mon., 24 Mar. 0.0312 0.0270 0.0287
01:01-02:00, Mon., 24 Mar. 0.0311 0.0270 0.0289
00:01-01:00, Mon., 24 Mar. 0.0311 0.0270 0.0291
23:01-24:00, Sun., 23 Mar. 0.0315 0.0266 0.0290
22:01-23:00, Sun., 23 Mar. 0.0321 0.0271 0.0289
21:01-22:00, Sun., 23 Mar. 0.0323 0.0270 0.0289
20:01-21:00, Sun., 23 Mar. 0.0316 0.0266 0.0289
19:01-20:00, Sun., 23 Mar. 0.0319 0.0270 0.0291
18:01-19:00, Sun., 23 Mar. 0.0315 0.0264 0.0293
17:01-18:00, Sun., 23 Mar. 0.0318 0.0277 0.0294
16:01-17:00, Sun., 23 Mar. 0.0318 0.0273 0.0295
15:01-16:00, Sun., 23 Mar. 0.0316 0.0278 0.0299
14:01-15:00, Sun., 23 Mar. 0.0318 0.0281 0.0299
13:01-14:00, Sun., 23 Mar. 0.0315 0.0272 0.0298
12:01-13:00, Sun., 23 Mar. 0.0319 0.0273 0.0296
11:01-12:00, Sun., 23 Mar. 0.0324 0.0273 0.0294
10:01-11:00, Sun., 23 Mar. 0.0320 0.0273 0.0295
09:01-10:00, Sun., 23 Mar. 0.0323 0.0273 0.0296
08:01-09:00, Sun., 23 Mar. 0.0311 0.0278 0.0296
07:01-08:00, Sun., 23 Mar. 0.0316 0.0270 0.0295
06:01-07:00, Sun., 23 Mar. 0.0311 0.0272 0.0292
05:01-06:00, Sun., 23 Mar. 0.0316 0.0266 0.0292
04:01-05:00, Sun., 23 Mar. 0.0312 0.0262 0.0291
03:01-04:00, Sun., 23 Mar. 0.0322 0.0272 0.0289
02:01-03:00, Sun., 23 Mar. 0.0308 0.0273 0.0290
01:01-02:00, Sun., 23 Mar. 0.0312 0.0269 0.0291
00:01-01:00, Sun., 23 Mar. 0.0318 0.0276 0.0293
23:01-24:00, Sat., 22 Mar. 0.0320 0.0272 0.0293
22:01-23:00, Sat., 22 Mar. 0.0311 0.0267 0.0292
21:01-22:00, Sat., 22 Mar. 0.0308 0.0266 0.0291
20:01-21:00, Sat., 22 Mar. 0.0315 0.0259 0.0292
19:01-20:00, Sat., 22 Mar. 0.0311 0.0271 0.0291
18:01-19:00, Sat., 22 Mar. 0.0319 0.0272 0.0292
17:01-18:00, Sat., 22 Mar. 0.0311 0.0270 0.0292
16:01-17:00, Sat., 22 Mar. 0.0314 0.0278 0.0295
15:01-16:00, Sat., 22 Mar. 0.0313 0.0279 0.0295
14:01-15:00, Sat., 22 Mar. 0.0319 0.0274 0.0294
13:01-14:00, Sat., 22 Mar. 0.0312 0.0272 0.0293
12:01-13:00, Sat., 22 Mar. 0.0312 0.0264 0.0289
11:01-12:00, Sat., 22 Mar. 0.0313 0.0260 0.0292
10:01-11:00, Sat., 22 Mar. 0.0311 0.0267 0.0294
09:01-10:00, Sat., 22 Mar. 0.0325 0.0273 0.0290
08:01-09:00, Sat., 22 Mar. 0.0313 0.0262 0.0291
07:01-08:00, Sat., 22 Mar. 0.0313 0.0276 0.0296
06:01-07:00, Sat., 22 Mar. 0.0315 0.0273 0.0295
05:01-06:00, Sat., 22 Mar. 0.0317 0.0271 0.0295
04:01-05:00, Sat., 22 Mar. 0.0320 0.0270 0.0293
03:01-04:00, Sat., 22 Mar. 0.0315 0.0266 0.0293
02:01-03:00, Sat., 22 Mar. 0.0323 0.0276 0.0296
01:01-02:00, Sat., 22 Mar. 0.0312 0.0278 0.0293
00:01-01:00, Sat., 22 Mar. 0.0312 0.0269 0.0292
23:01-24:00, Fri., 21 Mar. 0.0313 0.0258 0.0292
22:01-23:00, Fri., 21 Mar. 0.0315 0.0268 0.0291
21:01-22:00, Fri., 21 Mar. 0.0313 0.0270 0.0289
20:01-21:00, Fri., 21 Mar. 0.0311 0.0270 0.0290
19:01-20:00, Fri., 21 Mar. 0.0310 0.0262 0.0288
18:01-19:00, Fri., 21 Mar. 0.0323 0.0264 0.0287
17:01-18:00, Fri., 21 Mar. 0.0313 0.0269 0.0290
16:01-17:00, Fri., 21 Mar. 0.0310 0.0269 0.0292
15:01-16:00, Fri., 21 Mar. 0.0313 0.0276 0.0293
14:01-15:00, Fri., 21 Mar. 0.0315 0.0265 0.0288
13:01-14:00, Fri., 21 Mar. 0.0308 0.0273 0.0291
12:01-13:00, Fri., 21 Mar. 0.0308 0.0272 0.0291
11:01-12:00, Fri., 21 Mar. 0.0310 0.0268 0.0289
10:01-11:00, Fri., 21 Mar. 0.0311 0.0264 0.0290
09:01-10:00, Fri., 21 Mar. 0.0312 0.0266 0.0290
08:01-09:00, Fri., 21 Mar. 0.0313 0.0267 0.0290
07:01-08:00, Fri., 21 Mar. 0.0317 0.0267 0.0292
06:01-07:00, Fri., 21 Mar. 0.0315 0.0264 0.0291
05:01-06:00, Fri., 21 Mar. 0.0313 0.0270 0.0292
04:01-05:00, Fri., 21 Mar. 0.0308 0.0271 0.0291
03:01-04:00, Fri., 21 Mar. 0.0318 0.0266 0.0288
02:01-03:00, Fri., 21 Mar. 0.0306 0.0267 0.0286
01:01-02:00, Fri., 21 Mar. 0.0310 0.0270 0.0288
00:01-01:00, Fri., 21 Mar. 0.0311 0.0265 0.0286
23:01-24:00, Thu., 20 Mar. 0.0305 0.0265 0.0285
22:01-23:00, Thu., 20 Mar. 0.0306 0.0257 0.0287
21:01-22:00, Thu., 20 Mar. 0.0308 0.0269 0.0284
20:01-21:00, Thu., 20 Mar. 0.0318 0.0263 0.0284
19:01-20:00, Thu., 20 Mar. 0.0304 0.0261 0.0285
18:01-19:00, Thu., 20 Mar. 0.0309 0.0262 0.0284
17:01-18:00, Thu., 20 Mar. 0.0304 0.0263 0.0283
16:01-17:00, Thu., 20 Mar. 0.0309 0.0254 0.0282
15:01-16:00, Thu., 20 Mar. 0.0307 0.0266 0.0285
14:01-15:00, Thu., 20 Mar. 0.0304 0.0261 0.0283
13:01-14:00, Thu., 20 Mar. 0.0308 0.0259 0.0287
12:01-13:00, Thu., 20 Mar. 0.0306 0.0268 0.0286
11:01-12:00, Thu., 20 Mar. 0.0311 0.0267 0.0284
10:01-11:00, Thu., 20 Mar. 0.0305 0.0259 0.0284
09:01-10:00, Thu., 20 Mar. 0.0306 0.0263 0.0285
08:01-09:00, Thu., 20 Mar. 0.0308 0.0259 0.0286
07:01-08:00, Thu., 20 Mar. 0.0301 0.0249 0.0281
06:01-07:00, Thu., 20 Mar. 0.0309 0.0263 0.0283
05:01-06:00, Thu., 20 Mar. 0.0301 0.0264 0.0284
04:01-05:00, Thu., 20 Mar. 0.0309 0.0253 0.0283
03:01-04:00, Thu., 20 Mar. 0.0296 0.0265 0.0282
02:01-03:00, Thu., 20 Mar. 0.0304 0.0262 0.0285
01:01-02:00, Thu., 20 Mar. 0.0306 0.0266 0.0285
00:01-01:00, Thu., 20 Mar. 0.0302 0.0262 0.0284
23:01-24:00, Wed., 19 Mar. 0.0299 0.0264 0.0282
22:01-23:00, Wed., 19 Mar. 0.0314 0.0261 0.0283