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
22:01-23:00, Sat., 25 Apr. 0.0300 0.0261 0.0283
21:01-22:00, Sat., 25 Apr. 0.0302 0.0264 0.0282
20:01-21:00, Sat., 25 Apr. 0.0318 0.0266 0.0284
19:01-20:00, Sat., 25 Apr. 0.0308 0.0264 0.0283
18:01-19:00, Sat., 25 Apr. 0.0305 0.0258 0.0281
17:01-18:00, Sat., 25 Apr. 0.0305 0.0263 0.0284
16:01-17:00, Sat., 25 Apr. 0.0308 0.0259 0.0284
15:01-16:00, Sat., 25 Apr. 0.0301 0.0261 0.0283
14:01-15:00, Sat., 25 Apr. 0.0309 0.0269 0.0284
13:01-14:00, Sat., 25 Apr. 0.0315 0.0259 0.0285
12:01-13:00, Sat., 25 Apr. 0.0306 0.0261 0.0286
11:01-12:00, Sat., 25 Apr. 0.0312 0.0262 0.0286
10:01-11:00, Sat., 25 Apr. 0.0312 0.0263 0.0284
09:01-10:00, Sat., 25 Apr. 0.0308 0.0268 0.0287
08:01-09:00, Sat., 25 Apr. 0.0311 0.0269 0.0286
07:01-08:00, Sat., 25 Apr. 0.0304 0.0256 0.0283
06:01-07:00, Sat., 25 Apr. 0.0312 0.0264 0.0282
05:01-06:00, Sat., 25 Apr. 0.0306 0.0269 0.0283
04:01-05:00, Sat., 25 Apr. 0.0311 0.0265 0.0283
03:01-04:00, Sat., 25 Apr. 0.0308 0.0256 0.0284
02:01-03:00, Sat., 25 Apr. 0.0308 0.0263 0.0285
01:01-02:00, Sat., 25 Apr. 0.0309 0.0263 0.0284
00:01-01:00, Sat., 25 Apr. 0.0299 0.0264 0.0283
23:01-24:00, Fri., 24 Apr. 0.0308 0.0266 0.0282
22:01-23:00, Fri., 24 Apr. 0.0315 0.0266 0.0285
21:01-22:00, Fri., 24 Apr. 0.0302 0.0261 0.0283
20:01-21:00, Fri., 24 Apr. 0.0303 0.0264 0.0283
19:01-20:00, Fri., 24 Apr. 0.0300 0.0263 0.0283
18:01-19:00, Fri., 24 Apr. 0.0301 0.0262 0.0283
17:01-18:00, Fri., 24 Apr. 0.0298 0.0261 0.0281
16:01-17:00, Fri., 24 Apr. 0.0304 0.0256 0.0285
15:01-16:00, Fri., 24 Apr. 0.0301 0.0262 0.0283
14:01-15:00, Fri., 24 Apr. 0.0305 0.0263 0.0286
13:01-14:00, Fri., 24 Apr. 0.0302 0.0269 0.0284
12:01-13:00, Fri., 24 Apr. 0.0315 0.0268 0.0286
11:01-12:00, Fri., 24 Apr. 0.0309 0.0257 0.0284
10:01-11:00, Fri., 24 Apr. 0.0304 0.0265 0.0284
09:01-10:00, Fri., 24 Apr. 0.0308 0.0263 0.0283
08:01-09:00, Fri., 24 Apr. 0.0305 0.0256 0.0283
07:01-08:00, Fri., 24 Apr. 0.0312 0.0274 0.0291
06:01-07:00, Fri., 24 Apr. 0.0314 0.0269 0.0293
05:01-06:00, Fri., 24 Apr. 0.0312 0.0275 0.0289
04:01-05:00, Fri., 24 Apr. 0.0320 0.0270 0.0297
03:01-04:00, Fri., 24 Apr. 0.0318 0.0279 0.0301
02:01-03:00, Fri., 24 Apr. 0.0354 0.0293 0.0320
01:01-02:00, Fri., 24 Apr. 0.0379 0.0322 0.0348
00:01-01:00, Fri., 24 Apr. 0.0402 0.0341 0.0370
23:01-24:00, Thu., 23 Apr. 0.0417 0.0353 0.0391
22:01-23:00, Thu., 23 Apr. 0.0422 0.0365 0.0393
21:01-22:00, Thu., 23 Apr. 0.0452 0.0390 0.0417
20:01-21:00, Thu., 23 Apr. 0.0456 0.0381 0.0409
19:01-20:00, Thu., 23 Apr. 0.0425 0.0362 0.0395
18:01-19:00, Thu., 23 Apr. 0.0426 0.0371 0.0405
17:01-18:00, Thu., 23 Apr. 0.0423 0.0362 0.0396
16:01-17:00, Thu., 23 Apr. 0.0393 0.0344 0.0370
15:01-16:00, Thu., 23 Apr. 0.0405 0.0361 0.0381
14:01-15:00, Thu., 23 Apr. 0.0412 0.0360 0.0377
13:01-14:00, Thu., 23 Apr. 0.0401 0.0358 0.0379
12:01-13:00, Thu., 23 Apr. 0.0401 0.0349 0.0373
11:01-12:00, Thu., 23 Apr. 0.0386 0.0285 0.0335
10:01-11:00, Thu., 23 Apr. 0.0328 0.0273 0.0302
09:01-10:00, Thu., 23 Apr. 0.0321 0.0281 0.0301
08:01-09:00, Thu., 23 Apr. 0.0325 0.0280 0.0303
07:01-08:00, Thu., 23 Apr. 0.0324 0.0280 0.0304
06:01-07:00, Thu., 23 Apr. 0.0327 0.0279 0.0303
05:01-06:00, Thu., 23 Apr. 0.0325 0.0279 0.0301
04:01-05:00, Thu., 23 Apr. 0.0338 0.0280 0.0301
03:01-04:00, Thu., 23 Apr. 0.0326 0.0270 0.0301
02:01-03:00, Thu., 23 Apr. 0.0322 0.0280 0.0299
01:01-02:00, Thu., 23 Apr. 0.0325 0.0280 0.0300
00:01-01:00, Thu., 23 Apr. 0.0308 0.0270 0.0294
23:01-24:00, Wed., 22 Apr. 0.0309 0.0270 0.0294
22:01-23:00, Wed., 22 Apr. 0.0317 0.0279 0.0293
21:01-22:00, Wed., 22 Apr. 0.0322 0.0275 0.0296
20:01-21:00, Wed., 22 Apr. 0.0315 0.0270 0.0295
19:01-20:00, Wed., 22 Apr. 0.0312 0.0273 0.0296
18:01-19:00, Wed., 22 Apr. 0.0317 0.0270 0.0295
17:01-18:00, Wed., 22 Apr. 0.0321 0.0280 0.0295
16:01-17:00, Wed., 22 Apr. 0.0318 0.0256 0.0293
15:01-16:00, Wed., 22 Apr. 0.0310 0.0270 0.0292
14:01-15:00, Wed., 22 Apr. 0.0314 0.0263 0.0290
13:01-14:00, Wed., 22 Apr. 0.0315 0.0275 0.0293
12:01-13:00, Wed., 22 Apr. 0.0313 0.0278 0.0296
11:01-12:00, Wed., 22 Apr. 0.0309 0.0270 0.0293
10:01-11:00, Wed., 22 Apr. 0.0317 0.0273 0.0293
09:01-10:00, Wed., 22 Apr. 0.0319 0.0273 0.0294
08:01-09:00, Wed., 22 Apr. 0.0322 0.0272 0.0298
07:01-08:00, Wed., 22 Apr. 0.0318 0.0270 0.0298
06:01-07:00, Wed., 22 Apr. 0.0315 0.0272 0.0292
05:01-06:00, Wed., 22 Apr. 0.0312 0.0262 0.0291
04:01-05:00, Wed., 22 Apr. 0.0309 0.0271 0.0289
03:01-04:00, Wed., 22 Apr. 0.0309 0.0269 0.0291
02:01-03:00, Wed., 22 Apr. 0.0322 0.0270 0.0292
01:01-02:00, Wed., 22 Apr. 0.0311 0.0266 0.0293
00:01-01:00, Wed., 22 Apr. 0.0313 0.0273 0.0293
23:01-24:00, Tue., 21 Apr. 0.0309 0.0273 0.0293
22:01-23:00, Tue., 21 Apr. 0.0315 0.0276 0.0294
21:01-22:00, Tue., 21 Apr. 0.0313 0.0276 0.0293
20:01-21:00, Tue., 21 Apr. 0.0318 0.0271 0.0292
19:01-20:00, Tue., 21 Apr. 0.0311 0.0270 0.0294
18:01-19:00, Tue., 21 Apr. 0.0317 0.0273 0.0292
17:01-18:00, Tue., 21 Apr. 0.0312 0.0270 0.0292
16:01-17:00, Tue., 21 Apr. 0.0319 0.0280 0.0297
15:01-16:00, Tue., 21 Apr. 0.0326 0.0279 0.0298
14:01-15:00, Tue., 21 Apr. 0.0321 0.0269 0.0296
13:01-14:00, Tue., 21 Apr. 0.0311 0.0274 0.0293
12:01-13:00, Tue., 21 Apr. 0.0324 0.0279 0.0299
11:01-12:00, Tue., 21 Apr. 0.0325 0.0287 0.0306
10:01-11:00, Tue., 21 Apr. 0.0324 0.0273 0.0293
09:01-10:00, Tue., 21 Apr. 0.0313 0.0271 0.0292
08:01-09:00, Tue., 21 Apr. 0.0309 0.0269 0.0288
07:01-08:00, Tue., 21 Apr. 0.0322 0.0263 0.0288
06:01-07:00, Tue., 21 Apr. 0.0313 0.0265 0.0288
05:01-06:00, Tue., 21 Apr. 0.0313 0.0264 0.0288
04:01-05:00, Tue., 21 Apr. 0.0312 0.0269 0.0289
03:01-04:00, Tue., 21 Apr. 0.0310 0.0269 0.0290
02:01-03:00, Tue., 21 Apr. 0.0315 0.0276 0.0295
01:01-02:00, Tue., 21 Apr. 0.0311 0.0266 0.0293
00:01-01:00, Tue., 21 Apr. 0.0319 0.0273 0.0294
23:01-24:00, Mon., 20 Apr. 0.0316 0.0270 0.0293
22:01-23:00, Mon., 20 Apr. 0.0321 0.0273 0.0293
21:01-22:00, Mon., 20 Apr. 0.0312 0.0270 0.0293
20:01-21:00, Mon., 20 Apr. 0.0312 0.0267 0.0290
19:01-20:00, Mon., 20 Apr. 0.0317 0.0268 0.0291
18:01-19:00, Mon., 20 Apr. 0.0309 0.0270 0.0288
17:01-18:00, Mon., 20 Apr. 0.0319 0.0270 0.0290
16:01-17:00, Mon., 20 Apr. 0.0308 0.0270 0.0290
15:01-16:00, Mon., 20 Apr. 0.0318 0.0267 0.0296
14:01-15:00, Mon., 20 Apr. 0.0315 0.0284 0.0297
13:01-14:00, Mon., 20 Apr. 0.0311 0.0273 0.0292
12:01-13:00, Mon., 20 Apr. 0.0321 0.0264 0.0293
11:01-12:00, Mon., 20 Apr. 0.0317 0.0261 0.0292
10:01-11:00, Mon., 20 Apr. 0.0312 0.0273 0.0293
09:01-10:00, Mon., 20 Apr. 0.0313 0.0267 0.0291
08:01-09:00, Mon., 20 Apr. 0.0315 0.0273 0.0292
07:01-08:00, Mon., 20 Apr. 0.0311 0.0274 0.0293
06:01-07:00, Mon., 20 Apr. 0.0304 0.0275 0.0290
05:01-06:00, Mon., 20 Apr. 0.0316 0.0262 0.0288
04:01-05:00, Mon., 20 Apr. 0.0318 0.0271 0.0292
03:01-04:00, Mon., 20 Apr. 0.0315 0.0266 0.0293
02:01-03:00, Mon., 20 Apr. 0.0309 0.0270 0.0289
01:01-02:00, Mon., 20 Apr. 0.0315 0.0266 0.0292
00:01-01:00, Mon., 20 Apr. 0.0318 0.0261 0.0292
23:01-24:00, Sun., 19 Apr. 0.0324 0.0272 0.0292
22:01-23:00, Sun., 19 Apr. 0.0309 0.0270 0.0292
21:01-22:00, Sun., 19 Apr. 0.0313 0.0273 0.0290
20:01-21:00, Sun., 19 Apr. 0.0318 0.0273 0.0292
19:01-20:00, Sun., 19 Apr. 0.0311 0.0275 0.0293
18:01-19:00, Sun., 19 Apr. 0.0317 0.0271 0.0291
17:01-18:00, Sun., 19 Apr. 0.0315 0.0270 0.0288
16:01-17:00, Sun., 19 Apr. 0.0321 0.0277 0.0297
15:01-16:00, Sun., 19 Apr. 0.0315 0.0265 0.0291
14:01-15:00, Sun., 19 Apr. 0.0319 0.0267 0.0287
13:01-14:00, Sun., 19 Apr. 0.0315 0.0269 0.0287
12:01-13:00, Sun., 19 Apr. 0.0313 0.0263 0.0287
11:01-12:00, Sun., 19 Apr. 0.0303 0.0270 0.0287
10:01-11:00, Sun., 19 Apr. 0.0314 0.0269 0.0293
09:01-10:00, Sun., 19 Apr. 0.0321 0.0277 0.0300
08:01-09:00, Sun., 19 Apr. 0.0324 0.0280 0.0298
07:01-08:00, Sun., 19 Apr. 0.0319 0.0272 0.0297
06:01-07:00, Sun., 19 Apr. 0.0311 0.0276 0.0296
05:01-06:00, Sun., 19 Apr. 0.0311 0.0273 0.0292
04:01-05:00, Sun., 19 Apr. 0.0318 0.0266 0.0286
03:01-04:00, Sun., 19 Apr. 0.0308 0.0252 0.0283
02:01-03:00, Sun., 19 Apr. 0.0308 0.0261 0.0285
01:01-02:00, Sun., 19 Apr. 0.0311 0.0261 0.0286
00:01-01:00, Sun., 19 Apr. 0.0311 0.0267 0.0286
23:01-24:00, Sat., 18 Apr. 0.0304 0.0266 0.0287
22:01-23:00, Sat., 18 Apr. 0.0308 0.0265 0.0285
21:01-22:00, Sat., 18 Apr. 0.0308 0.0261 0.0285
20:01-21:00, Sat., 18 Apr. 0.0308 0.0267 0.0283
19:01-20:00, Sat., 18 Apr. 0.0298 0.0266 0.0284
18:01-19:00, Sat., 18 Apr. 0.0298 0.0263 0.0284
17:01-18:00, Sat., 18 Apr. 0.0323 0.0264 0.0284
16:01-17:00, Sat., 18 Apr. 0.0307 0.0266 0.0286
15:01-16:00, Sat., 18 Apr. 0.0309 0.0260 0.0287
14:01-15:00, Sat., 18 Apr. 0.0308 0.0270 0.0289
13:01-14:00, Sat., 18 Apr. 0.0313 0.0270 0.0290
12:01-13:00, Sat., 18 Apr. 0.0301 0.0266 0.0284
11:01-12:00, Sat., 18 Apr. 0.0306 0.0249 0.0285
10:01-11:00, Sat., 18 Apr. 0.0311 0.0270 0.0289
09:01-10:00, Sat., 18 Apr. 0.0311 0.0262 0.0289
08:01-09:00, Sat., 18 Apr. 0.0308 0.0269 0.0288
07:01-08:00, Sat., 18 Apr. 0.0304 0.0262 0.0282
06:01-07:00, Sat., 18 Apr. 0.0307 0.0250 0.0284
05:01-06:00, Sat., 18 Apr. 0.0315 0.0268 0.0287
04:01-05:00, Sat., 18 Apr. 0.0303 0.0263 0.0285
03:01-04:00, Sat., 18 Apr. 0.0313 0.0264 0.0285
02:01-03:00, Sat., 18 Apr. 0.0305 0.0259 0.0281
01:01-02:00, Sat., 18 Apr. 0.0303 0.0265 0.0283
00:01-01:00, Sat., 18 Apr. 0.0297 0.0264 0.0281
23:01-24:00, Fri., 17 Apr. 0.0302 0.0264 0.0281
22:01-23:00, Fri., 17 Apr. 0.0302 0.0256 0.0282
21:01-22:00, Fri., 17 Apr. 0.0297 0.0259 0.0280
20:01-21:00, Fri., 17 Apr. 0.0298 0.0252 0.0279
19:01-20:00, Fri., 17 Apr. 0.0306 0.0265 0.0284
18:01-19:00, Fri., 17 Apr. 0.0299 0.0263 0.0281
17:01-18:00, Fri., 17 Apr. 0.0308 0.0262 0.0282
16:01-17:00, Fri., 17 Apr. 0.0304 0.0261 0.0283
15:01-16:00, Fri., 17 Apr. 0.0303 0.0266 0.0282
14:01-15:00, Fri., 17 Apr. 0.0304 0.0261 0.0283
13:01-14:00, Fri., 17 Apr. 0.0308 0.0266 0.0285
12:01-13:00, Fri., 17 Apr. 0.0316 0.0265 0.0283
11:01-12:00, Fri., 17 Apr. 0.0319 0.0266 0.0287
10:01-11:00, Fri., 17 Apr. 0.0302 0.0256 0.0283
09:01-10:00, Fri., 17 Apr. 0.0297 0.0265 0.0280
08:01-09:00, Fri., 17 Apr. 0.0301 0.0255 0.0279
07:01-08:00, Fri., 17 Apr. 0.0299 0.0263 0.0281
06:01-07:00, Fri., 17 Apr. 0.0300 0.0258 0.0278
05:01-06:00, Fri., 17 Apr. 0.0294 0.0256 0.0278
04:01-05:00, Fri., 17 Apr. 0.0294 0.0256 0.0279
03:01-04:00, Fri., 17 Apr. 0.0310 0.0260 0.0281
02:01-03:00, Fri., 17 Apr. 0.0301 0.0252 0.0281
01:01-02:00, Fri., 17 Apr. 0.0304 0.0258 0.0281
00:01-01:00, Fri., 17 Apr. 0.0301 0.0260 0.0282
23:01-24:00, Thu., 16 Apr. 0.0308 0.0263 0.0283
22:01-23:00, Thu., 16 Apr. 0.0309 0.0257 0.0282
21:01-22:00, Thu., 16 Apr. 0.0294 0.0263 0.0281
20:01-21:00, Thu., 16 Apr. 0.0299 0.0264 0.0282
19:01-20:00, Thu., 16 Apr. 0.0301 0.0258 0.0280
18:01-19:00, Thu., 16 Apr. 0.0308 0.0259 0.0282
17:01-18:00, Thu., 16 Apr. 0.0311 0.0261 0.0282
16:01-17:00, Thu., 16 Apr. 0.0306 0.0270 0.0286
15:01-16:00, Thu., 16 Apr. 0.0304 0.0254 0.0284
14:01-15:00, Thu., 16 Apr. 0.0303 0.0270 0.0283
13:01-14:00, Thu., 16 Apr. 0.0311 0.0258 0.0287
12:01-13:00, Thu., 16 Apr. 0.0308 0.0268 0.0289
11:01-12:00, Thu., 16 Apr. 0.0308 0.0270 0.0291
10:01-11:00, Thu., 16 Apr. 0.0306 0.0266 0.0287
09:01-10:00, Thu., 16 Apr. 0.0299 0.0256 0.0278
08:01-09:00, Thu., 16 Apr. 0.0305 0.0256 0.0278
07:01-08:00, Thu., 16 Apr. 0.0301 0.0256 0.0281
06:01-07:00, Thu., 16 Apr. 0.0308 0.0268 0.0286
05:01-06:00, Thu., 16 Apr. 0.0313 0.0267 0.0289
04:01-05:00, Thu., 16 Apr. 0.0329 0.0275 0.0301
03:01-04:00, Thu., 16 Apr. 0.0345 0.0292 0.0323
02:01-03:00, Thu., 16 Apr. 0.0372 0.0322 0.0348
01:01-02:00, Thu., 16 Apr. 0.0371 0.0322 0.0347
00:01-01:00, Thu., 16 Apr. 0.0357 0.0316 0.0333
23:01-24:00, Wed., 15 Apr. 0.0391 0.0315 0.0350