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
06:01-07:00, Wed., 24 Apr. 0.0370 0.0308 0.0344
05:01-06:00, Wed., 24 Apr. 0.0358 0.0304 0.0330
04:01-05:00, Wed., 24 Apr. 0.0325 0.0277 0.0299
03:01-04:00, Wed., 24 Apr. 0.0315 0.0263 0.0290
02:01-03:00, Wed., 24 Apr. 0.0305 0.0268 0.0288
01:01-02:00, Wed., 24 Apr. 0.0315 0.0270 0.0290
00:01-01:00, Wed., 24 Apr. 0.0308 0.0270 0.0288
23:01-24:00, Tue., 23 Apr. 0.0308 0.0259 0.0290
22:01-23:00, Tue., 23 Apr. 0.0315 0.0268 0.0289
21:01-22:00, Tue., 23 Apr. 0.0312 0.0267 0.0290
20:01-21:00, Tue., 23 Apr. 0.0308 0.0270 0.0288
19:01-20:00, Tue., 23 Apr. 0.0309 0.0272 0.0291
18:01-19:00, Tue., 23 Apr. 0.0318 0.0270 0.0289
17:01-18:00, Tue., 23 Apr. 0.0319 0.0274 0.0291
16:01-17:00, Tue., 23 Apr. 0.0315 0.0274 0.0295
15:01-16:00, Tue., 23 Apr. 0.0322 0.0267 0.0292
14:01-15:00, Tue., 23 Apr. 0.0315 0.0266 0.0292
13:01-14:00, Tue., 23 Apr. 0.0311 0.0273 0.0288
12:01-13:00, Tue., 23 Apr. 0.0318 0.0266 0.0287
11:01-12:00, Tue., 23 Apr. 0.0308 0.0263 0.0288
10:01-11:00, Tue., 23 Apr. 0.0308 0.0270 0.0290
09:01-10:00, Tue., 23 Apr. 0.0310 0.0267 0.0287
08:01-09:00, Tue., 23 Apr. 0.0312 0.0258 0.0287
07:01-08:00, Tue., 23 Apr. 0.0317 0.0256 0.0287
06:01-07:00, Tue., 23 Apr. 0.0308 0.0261 0.0285
05:01-06:00, Tue., 23 Apr. 0.0304 0.0270 0.0285
04:01-05:00, Tue., 23 Apr. 0.0307 0.0267 0.0286
03:01-04:00, Tue., 23 Apr. 0.0315 0.0270 0.0289
02:01-03:00, Tue., 23 Apr. 0.0312 0.0270 0.0291
01:01-02:00, Tue., 23 Apr. 0.0316 0.0270 0.0290
00:01-01:00, Tue., 23 Apr. 0.0315 0.0270 0.0294
23:01-24:00, Mon., 22 Apr. 0.0311 0.0268 0.0288
22:01-23:00, Mon., 22 Apr. 0.0308 0.0270 0.0290
21:01-22:00, Mon., 22 Apr. 0.0310 0.0270 0.0290
20:01-21:00, Mon., 22 Apr. 0.0317 0.0270 0.0290
19:01-20:00, Mon., 22 Apr. 0.0309 0.0270 0.0289
18:01-19:00, Mon., 22 Apr. 0.0317 0.0263 0.0286
17:01-18:00, Mon., 22 Apr. 0.0311 0.0267 0.0288
16:01-17:00, Mon., 22 Apr. 0.0311 0.0259 0.0288
15:01-16:00, Mon., 22 Apr. 0.0310 0.0268 0.0286
14:01-15:00, Mon., 22 Apr. 0.0313 0.0264 0.0289
13:01-14:00, Mon., 22 Apr. 0.0306 0.0265 0.0290
12:01-13:00, Mon., 22 Apr. 0.0315 0.0263 0.0290
11:01-12:00, Mon., 22 Apr. 0.0320 0.0270 0.0292
10:01-11:00, Mon., 22 Apr. 0.0322 0.0279 0.0302
09:01-10:00, Mon., 22 Apr. 0.0353 0.0291 0.0328
08:01-09:00, Mon., 22 Apr. 0.0360 0.0322 0.0342
07:01-08:00, Mon., 22 Apr. 0.0396 0.0336 0.0363
06:01-07:00, Mon., 22 Apr. 0.0383 0.0309 0.0346
05:01-06:00, Mon., 22 Apr. 0.0356 0.0310 0.0334
04:01-05:00, Mon., 22 Apr. 0.0371 0.0315 0.0342
03:01-04:00, Mon., 22 Apr. 0.0372 0.0326 0.0347
02:01-03:00, Mon., 22 Apr. 0.0428 0.0345 0.0385
01:01-02:00, Mon., 22 Apr. 0.0423 0.0371 0.0400
00:01-01:00, Mon., 22 Apr. 0.0433 0.0379 0.0407
23:01-24:00, Sun., 21 Apr. 0.0433 0.0361 0.0396
22:01-23:00, Sun., 21 Apr. 0.0438 0.0372 0.0404
21:01-22:00, Sun., 21 Apr. 0.0386 0.0351 0.0371
20:01-21:00, Sun., 21 Apr. 0.0397 0.0343 0.0373
19:01-20:00, Sun., 21 Apr. 0.0388 0.0315 0.0360
18:01-19:00, Sun., 21 Apr. 0.0337 0.0294 0.0317
17:01-18:00, Sun., 21 Apr. 0.0315 0.0273 0.0296
16:01-17:00, Sun., 21 Apr. 0.0318 0.0274 0.0296
15:01-16:00, Sun., 21 Apr. 0.0325 0.0281 0.0304
14:01-15:00, Sun., 21 Apr. 0.0321 0.0283 0.0297
13:01-14:00, Sun., 21 Apr. 0.0326 0.0273 0.0299
12:01-13:00, Sun., 21 Apr. 0.0326 0.0280 0.0301
11:01-12:00, Sun., 21 Apr. 0.0323 0.0276 0.0300
10:01-11:00, Sun., 21 Apr. 0.0312 0.0273 0.0294
09:01-10:00, Sun., 21 Apr. 0.0321 0.0285 0.0300
08:01-09:00, Sun., 21 Apr. 0.0318 0.0277 0.0299
07:01-08:00, Sun., 21 Apr. 0.0322 0.0270 0.0299
06:01-07:00, Sun., 21 Apr. 0.0322 0.0276 0.0301
05:01-06:00, Sun., 21 Apr. 0.0326 0.0276 0.0300
04:01-05:00, Sun., 21 Apr. 0.0329 0.0280 0.0301
03:01-04:00, Sun., 21 Apr. 0.0328 0.0283 0.0299
02:01-03:00, Sun., 21 Apr. 0.0329 0.0287 0.0303
01:01-02:00, Sun., 21 Apr. 0.0322 0.0283 0.0300
00:01-01:00, Sun., 21 Apr. 0.0320 0.0280 0.0301
23:01-24:00, Sat., 20 Apr. 0.0324 0.0283 0.0301
22:01-23:00, Sat., 20 Apr. 0.0321 0.0276 0.0300
21:01-22:00, Sat., 20 Apr. 0.0322 0.0284 0.0299
20:01-21:00, Sat., 20 Apr. 0.0318 0.0278 0.0299
19:01-20:00, Sat., 20 Apr. 0.0323 0.0284 0.0303
18:01-19:00, Sat., 20 Apr. 0.0324 0.0280 0.0299
17:01-18:00, Sat., 20 Apr. 0.0326 0.0278 0.0303
16:01-17:00, Sat., 20 Apr. 0.0335 0.0285 0.0307
15:01-16:00, Sat., 20 Apr. 0.0332 0.0272 0.0307
14:01-15:00, Sat., 20 Apr. 0.0331 0.0278 0.0306
13:01-14:00, Sat., 20 Apr. 0.0326 0.0274 0.0306
12:01-13:00, Sat., 20 Apr. 0.0329 0.0280 0.0307
11:01-12:00, Sat., 20 Apr. 0.0324 0.0277 0.0302
10:01-11:00, Sat., 20 Apr. 0.0318 0.0270 0.0299
09:01-10:00, Sat., 20 Apr. 0.0326 0.0270 0.0303
08:01-09:00, Sat., 20 Apr. 0.0328 0.0283 0.0305
07:01-08:00, Sat., 20 Apr. 0.0323 0.0282 0.0302
06:01-07:00, Sat., 20 Apr. 0.0325 0.0282 0.0301
05:01-06:00, Sat., 20 Apr. 0.0324 0.0275 0.0299
04:01-05:00, Sat., 20 Apr. 0.0332 0.0270 0.0297
03:01-04:00, Sat., 20 Apr. 0.0321 0.0282 0.0302
02:01-03:00, Sat., 20 Apr. 0.0322 0.0282 0.0302
01:01-02:00, Sat., 20 Apr. 0.0325 0.0279 0.0302
00:01-01:00, Sat., 20 Apr. 0.0328 0.0279 0.0301
23:01-24:00, Fri., 19 Apr. 0.0326 0.0285 0.0304
22:01-23:00, Fri., 19 Apr. 0.0322 0.0283 0.0300
21:01-22:00, Fri., 19 Apr. 0.0326 0.0281 0.0302
20:01-21:00, Fri., 19 Apr. 0.0321 0.0280 0.0302
19:01-20:00, Fri., 19 Apr. 0.0320 0.0280 0.0301
18:01-19:00, Fri., 19 Apr. 0.0318 0.0278 0.0299
17:01-18:00, Fri., 19 Apr. 0.0320 0.0277 0.0300
16:01-17:00, Fri., 19 Apr. 0.0327 0.0280 0.0301
15:01-16:00, Fri., 19 Apr. 0.0322 0.0273 0.0300
14:01-15:00, Fri., 19 Apr. 0.0323 0.0277 0.0300
13:01-14:00, Fri., 19 Apr. 0.0322 0.0280 0.0305
12:01-13:00, Fri., 19 Apr. 0.0325 0.0287 0.0306
11:01-12:00, Fri., 19 Apr. 0.0323 0.0283 0.0306
10:01-11:00, Fri., 19 Apr. 0.0318 0.0286 0.0301
09:01-10:00, Fri., 19 Apr. 0.0323 0.0273 0.0301
08:01-09:00, Fri., 19 Apr. 0.0327 0.0279 0.0301
07:01-08:00, Fri., 19 Apr. 0.0322 0.0276 0.0302
06:01-07:00, Fri., 19 Apr. 0.0332 0.0275 0.0301
05:01-06:00, Fri., 19 Apr. 0.0326 0.0277 0.0301
04:01-05:00, Fri., 19 Apr. 0.0326 0.0292 0.0307
03:01-04:00, Fri., 19 Apr. 0.0329 0.0281 0.0302
02:01-03:00, Fri., 19 Apr. 0.0322 0.0277 0.0300
01:01-02:00, Fri., 19 Apr. 0.0322 0.0283 0.0304
00:01-01:00, Fri., 19 Apr. 0.0331 0.0282 0.0310
23:01-24:00, Thu., 18 Apr. 0.0335 0.0296 0.0314
22:01-23:00, Thu., 18 Apr. 0.0367 0.0308 0.0330
21:01-22:00, Thu., 18 Apr. 0.0368 0.0315 0.0338
20:01-21:00, Thu., 18 Apr. 0.0373 0.0323 0.0344
19:01-20:00, Thu., 18 Apr. 0.0378 0.0325 0.0348
18:01-19:00, Thu., 18 Apr. 0.0361 0.0279 0.0310
17:01-18:00, Thu., 18 Apr. 0.0317 0.0280 0.0297
16:01-17:00, Thu., 18 Apr. 0.0331 0.0273 0.0300
15:01-16:00, Thu., 18 Apr. 0.0316 0.0276 0.0299
14:01-15:00, Thu., 18 Apr. 0.0371 0.0275 0.0296
13:01-14:00, Thu., 18 Apr. 0.0323 0.0276 0.0298
12:01-13:00, Thu., 18 Apr. 0.0326 0.0280 0.0300
11:01-12:00, Thu., 18 Apr. 0.0322 0.0274 0.0299
10:01-11:00, Thu., 18 Apr. 0.0318 0.0276 0.0298
09:01-10:00, Thu., 18 Apr. 0.0319 0.0283 0.0303
08:01-09:00, Thu., 18 Apr. 0.0325 0.0273 0.0299
07:01-08:00, Thu., 18 Apr. 0.0328 0.0276 0.0299
06:01-07:00, Thu., 18 Apr. 0.0322 0.0276 0.0303
05:01-06:00, Thu., 18 Apr. 0.0327 0.0280 0.0299
04:01-05:00, Thu., 18 Apr. 0.0326 0.0265 0.0299
03:01-04:00, Thu., 18 Apr. 0.0321 0.0277 0.0296
02:01-03:00, Thu., 18 Apr. 0.0318 0.0278 0.0294
01:01-02:00, Thu., 18 Apr. 0.0323 0.0272 0.0296
00:01-01:00, Thu., 18 Apr. 0.0326 0.0269 0.0295
23:01-24:00, Wed., 17 Apr. 0.0315 0.0268 0.0294
22:01-23:00, Wed., 17 Apr. 0.0311 0.0273 0.0293
21:01-22:00, Wed., 17 Apr. 0.0320 0.0273 0.0292
20:01-21:00, Wed., 17 Apr. 0.0307 0.0256 0.0292
19:01-20:00, Wed., 17 Apr. 0.0314 0.0277 0.0294
18:01-19:00, Wed., 17 Apr. 0.0325 0.0265 0.0294
17:01-18:00, Wed., 17 Apr. 0.0309 0.0270 0.0288
16:01-17:00, Wed., 17 Apr. 0.0318 0.0267 0.0291
15:01-16:00, Wed., 17 Apr. 0.0321 0.0278 0.0301
14:01-15:00, Wed., 17 Apr. 0.0321 0.0276 0.0299
13:01-14:00, Wed., 17 Apr. 0.0332 0.0273 0.0298
12:01-13:00, Wed., 17 Apr. 0.0313 0.0275 0.0296
11:01-12:00, Wed., 17 Apr. 0.0321 0.0275 0.0296
10:01-11:00, Wed., 17 Apr. 0.0306 0.0264 0.0290
09:01-10:00, Wed., 17 Apr. 0.0315 0.0262 0.0288
08:01-09:00, Wed., 17 Apr. 0.0316 0.0275 0.0290
07:01-08:00, Wed., 17 Apr. 0.0311 0.0271 0.0289
06:01-07:00, Wed., 17 Apr. 0.0313 0.0276 0.0292
05:01-06:00, Wed., 17 Apr. 0.0308 0.0263 0.0289
04:01-05:00, Wed., 17 Apr. 0.0312 0.0267 0.0290
03:01-04:00, Wed., 17 Apr. 0.0309 0.0262 0.0290
02:01-03:00, Wed., 17 Apr. 0.0318 0.0272 0.0291
01:01-02:00, Wed., 17 Apr. 0.0319 0.0261 0.0292
00:01-01:00, Wed., 17 Apr. 0.0314 0.0270 0.0290
23:01-24:00, Tue., 16 Apr. 0.0315 0.0272 0.0292
22:01-23:00, Tue., 16 Apr. 0.0317 0.0267 0.0293
21:01-22:00, Tue., 16 Apr. 0.0311 0.0271 0.0290
20:01-21:00, Tue., 16 Apr. 0.0311 0.0268 0.0287
19:01-20:00, Tue., 16 Apr. 0.0309 0.0266 0.0286
18:01-19:00, Tue., 16 Apr. 0.0310 0.0263 0.0290
17:01-18:00, Tue., 16 Apr. 0.0312 0.0263 0.0286
16:01-17:00, Tue., 16 Apr. 0.0311 0.0271 0.0293
15:01-16:00, Tue., 16 Apr. 0.0316 0.0270 0.0293
14:01-15:00, Tue., 16 Apr. 0.0315 0.0270 0.0291
13:01-14:00, Tue., 16 Apr. 0.0319 0.0276 0.0294
12:01-13:00, Tue., 16 Apr. 0.0311 0.0264 0.0288
11:01-12:00, Tue., 16 Apr. 0.0302 0.0274 0.0287
10:01-11:00, Tue., 16 Apr. 0.0311 0.0265 0.0288
09:01-10:00, Tue., 16 Apr. 0.0308 0.0268 0.0288
08:01-09:00, Tue., 16 Apr. 0.0307 0.0265 0.0286
07:01-08:00, Tue., 16 Apr. 0.0308 0.0269 0.0284
06:01-07:00, Tue., 16 Apr. 0.0309 0.0265 0.0285
05:01-06:00, Tue., 16 Apr. 0.0309 0.0270 0.0288
04:01-05:00, Tue., 16 Apr. 0.0308 0.0256 0.0288
03:01-04:00, Tue., 16 Apr. 0.0311 0.0274 0.0289
02:01-03:00, Tue., 16 Apr. 0.0312 0.0270 0.0287
01:01-02:00, Tue., 16 Apr. 0.0314 0.0266 0.0286
00:01-01:00, Tue., 16 Apr. 0.0304 0.0267 0.0286
23:01-24:00, Mon., 15 Apr. 0.0311 0.0258 0.0287
22:01-23:00, Mon., 15 Apr. 0.0303 0.0270 0.0286
21:01-22:00, Mon., 15 Apr. 0.0302 0.0266 0.0283
20:01-21:00, Mon., 15 Apr. 0.0314 0.0266 0.0285
19:01-20:00, Mon., 15 Apr. 0.0317 0.0270 0.0290
18:01-19:00, Mon., 15 Apr. 0.0309 0.0270 0.0287
17:01-18:00, Mon., 15 Apr. 0.0312 0.0269 0.0291
16:01-17:00, Mon., 15 Apr. 0.0314 0.0275 0.0296
15:01-16:00, Mon., 15 Apr. 0.0311 0.0268 0.0294
14:01-15:00, Mon., 15 Apr. 0.0325 0.0266 0.0297
13:01-14:00, Mon., 15 Apr. 0.0315 0.0275 0.0295
12:01-13:00, Mon., 15 Apr. 0.0322 0.0274 0.0296
11:01-12:00, Mon., 15 Apr. 0.0316 0.0276 0.0296
10:01-11:00, Mon., 15 Apr. 0.0313 0.0270 0.0291
09:01-10:00, Mon., 15 Apr. 0.0310 0.0273 0.0293
08:01-09:00, Mon., 15 Apr. 0.0309 0.0264 0.0292
07:01-08:00, Mon., 15 Apr. 0.0312 0.0261 0.0289
06:01-07:00, Mon., 15 Apr. 0.0308 0.0270 0.0290
05:01-06:00, Mon., 15 Apr. 0.0311 0.0261 0.0286
04:01-05:00, Mon., 15 Apr. 0.0308 0.0247 0.0286
03:01-04:00, Mon., 15 Apr. 0.0308 0.0266 0.0287
02:01-03:00, Mon., 15 Apr. 0.0308 0.0269 0.0286
01:01-02:00, Mon., 15 Apr. 0.0308 0.0264 0.0288
00:01-01:00, Mon., 15 Apr. 0.0310 0.0267 0.0287
23:01-24:00, Sun., 14 Apr. 0.0306 0.0270 0.0287
22:01-23:00, Sun., 14 Apr. 0.0310 0.0266 0.0287
21:01-22:00, Sun., 14 Apr. 0.0310 0.0264 0.0286
20:01-21:00, Sun., 14 Apr. 0.0314 0.0264 0.0286
19:01-20:00, Sun., 14 Apr. 0.0308 0.0265 0.0287
18:01-19:00, Sun., 14 Apr. 0.0308 0.0265 0.0286
17:01-18:00, Sun., 14 Apr. 0.0315 0.0266 0.0290
16:01-17:00, Sun., 14 Apr. 0.0308 0.0257 0.0291
15:01-16:00, Sun., 14 Apr. 0.0322 0.0267 0.0290
14:01-15:00, Sun., 14 Apr. 0.0313 0.0259 0.0286
13:01-14:00, Sun., 14 Apr. 0.0304 0.0269 0.0287
12:01-13:00, Sun., 14 Apr. 0.0300 0.0256 0.0281
11:01-12:00, Sun., 14 Apr. 0.0300 0.0255 0.0280
10:01-11:00, Sun., 14 Apr. 0.0308 0.0267 0.0284
09:01-10:00, Sun., 14 Apr. 0.0305 0.0270 0.0288
08:01-09:00, Sun., 14 Apr. 0.0315 0.0264 0.0286
07:01-08:00, Sun., 14 Apr. 0.0311 0.0269 0.0290