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
10:01-11:00, Fri., 27 Feb. 0.0304 0.0266 0.0286
09:01-10:00, Fri., 27 Feb. 0.0304 0.0261 0.0283
08:01-09:00, Fri., 27 Feb. 0.0300 0.0259 0.0279
07:01-08:00, Fri., 27 Feb. 0.0302 0.0263 0.0282
06:01-07:00, Fri., 27 Feb. 0.0303 0.0258 0.0281
05:01-06:00, Fri., 27 Feb. 0.0309 0.0266 0.0285
04:01-05:00, Fri., 27 Feb. 0.0306 0.0251 0.0284
03:01-04:00, Fri., 27 Feb. 0.0304 0.0270 0.0287
02:01-03:00, Fri., 27 Feb. 0.0298 0.0266 0.0285
01:01-02:00, Fri., 27 Feb. 0.0307 0.0265 0.0285
00:01-01:00, Fri., 27 Feb. 0.0302 0.0268 0.0285
23:01-24:00, Thu., 26 Feb. 0.0308 0.0265 0.0286
22:01-23:00, Thu., 26 Feb. 0.0306 0.0263 0.0285
21:01-22:00, Thu., 26 Feb. 0.0308 0.0272 0.0285
20:01-21:00, Thu., 26 Feb. 0.0304 0.0268 0.0285
19:01-20:00, Thu., 26 Feb. 0.0309 0.0271 0.0286
18:01-19:00, Thu., 26 Feb. 0.0305 0.0265 0.0284
17:01-18:00, Thu., 26 Feb. 0.0304 0.0252 0.0282
16:01-17:00, Thu., 26 Feb. 0.0303 0.0260 0.0284
15:01-16:00, Thu., 26 Feb. 0.0308 0.0261 0.0285
14:01-15:00, Thu., 26 Feb. 0.0309 0.0263 0.0284
13:01-14:00, Thu., 26 Feb. 0.0307 0.0267 0.0283
12:01-13:00, Thu., 26 Feb. 0.0304 0.0259 0.0283
11:01-12:00, Thu., 26 Feb. 0.0298 0.0263 0.0282
10:01-11:00, Thu., 26 Feb. 0.0308 0.0255 0.0282
09:01-10:00, Thu., 26 Feb. 0.0300 0.0267 0.0282
08:01-09:00, Thu., 26 Feb. 0.0303 0.0263 0.0280
07:01-08:00, Thu., 26 Feb. 0.0308 0.0258 0.0279
06:01-07:00, Thu., 26 Feb. 0.0307 0.0255 0.0280
05:01-06:00, Thu., 26 Feb. 0.0301 0.0259 0.0281
04:01-05:00, Thu., 26 Feb. 0.0312 0.0270 0.0291
03:01-04:00, Thu., 26 Feb. 0.0334 0.0278 0.0306
02:01-03:00, Thu., 26 Feb. 0.0346 0.0290 0.0322
01:01-02:00, Thu., 26 Feb. 0.0332 0.0278 0.0303
00:01-01:00, Thu., 26 Feb. 0.0350 0.0301 0.0327
23:01-24:00, Wed., 25 Feb. 0.0386 0.0316 0.0358
22:01-23:00, Wed., 25 Feb. 0.0402 0.0339 0.0370
21:01-22:00, Wed., 25 Feb. 0.0405 0.0353 0.0377
20:01-21:00, Wed., 25 Feb. 0.0402 0.0338 0.0367
19:01-20:00, Wed., 25 Feb. 0.0372 0.0329 0.0348
18:01-19:00, Wed., 25 Feb. 0.0366 0.0319 0.0347
17:01-18:00, Wed., 25 Feb. 0.0348 0.0304 0.0331
16:01-17:00, Wed., 25 Feb. 0.0396 0.0318 0.0355
15:01-16:00, Wed., 25 Feb. 0.0418 0.0359 0.0392
14:01-15:00, Wed., 25 Feb. 0.0428 0.0371 0.0402
13:01-14:00, Wed., 25 Feb. 0.0407 0.0350 0.0382
12:01-13:00, Wed., 25 Feb. 0.0402 0.0356 0.0377
11:01-12:00, Wed., 25 Feb. 0.0410 0.0343 0.0377
10:01-11:00, Wed., 25 Feb. 0.0382 0.0319 0.0344
09:01-10:00, Wed., 25 Feb. 0.0381 0.0325 0.0346
08:01-09:00, Wed., 25 Feb. 0.0355 0.0308 0.0329
07:01-08:00, Wed., 25 Feb. 0.0338 0.0299 0.0318
06:01-07:00, Wed., 25 Feb. 0.0323 0.0279 0.0300
05:01-06:00, Wed., 25 Feb. 0.0318 0.0276 0.0295
04:01-05:00, Wed., 25 Feb. 0.0325 0.0276 0.0297
03:01-04:00, Wed., 25 Feb. 0.0317 0.0273 0.0297
02:01-03:00, Wed., 25 Feb. 0.0315 0.0274 0.0295
01:01-02:00, Wed., 25 Feb. 0.0323 0.0280 0.0299
00:01-01:00, Wed., 25 Feb. 0.0319 0.0280 0.0297
23:01-24:00, Tue., 24 Feb. 0.0318 0.0270 0.0296
22:01-23:00, Tue., 24 Feb. 0.0325 0.0270 0.0292
21:01-22:00, Tue., 24 Feb. 0.0315 0.0273 0.0295
20:01-21:00, Tue., 24 Feb. 0.0306 0.0263 0.0292
19:01-20:00, Tue., 24 Feb. 0.0315 0.0275 0.0293
18:01-19:00, Tue., 24 Feb. 0.0318 0.0273 0.0290
17:01-18:00, Tue., 24 Feb. 0.0314 0.0270 0.0289
16:01-17:00, Tue., 24 Feb. 0.0315 0.0272 0.0294
15:01-16:00, Tue., 24 Feb. 0.0310 0.0267 0.0293
14:01-15:00, Tue., 24 Feb. 0.0319 0.0273 0.0294
13:01-14:00, Tue., 24 Feb. 0.0315 0.0278 0.0293
12:01-13:00, Tue., 24 Feb. 0.0323 0.0270 0.0292
11:01-12:00, Tue., 24 Feb. 0.0317 0.0276 0.0294
10:01-11:00, Tue., 24 Feb. 0.0329 0.0267 0.0294
09:01-10:00, Tue., 24 Feb. 0.0311 0.0272 0.0291
08:01-09:00, Tue., 24 Feb. 0.0316 0.0269 0.0292
07:01-08:00, Tue., 24 Feb. 0.0311 0.0276 0.0293
06:01-07:00, Tue., 24 Feb. 0.0316 0.0269 0.0291
05:01-06:00, Tue., 24 Feb. 0.0322 0.0273 0.0298
04:01-05:00, Tue., 24 Feb. 0.0331 0.0273 0.0296
03:01-04:00, Tue., 24 Feb. 0.0322 0.0273 0.0294
02:01-03:00, Tue., 24 Feb. 0.0322 0.0276 0.0294
01:01-02:00, Tue., 24 Feb. 0.0315 0.0276 0.0296
00:01-01:00, Tue., 24 Feb. 0.0311 0.0278 0.0295
23:01-24:00, Mon., 23 Feb. 0.0318 0.0271 0.0297
22:01-23:00, Mon., 23 Feb. 0.0313 0.0273 0.0294
21:01-22:00, Mon., 23 Feb. 0.0312 0.0265 0.0295
20:01-21:00, Mon., 23 Feb. 0.0318 0.0270 0.0294
19:01-20:00, Mon., 23 Feb. 0.0315 0.0272 0.0294
18:01-19:00, Mon., 23 Feb. 0.0316 0.0273 0.0297
17:01-18:00, Mon., 23 Feb. 0.0315 0.0277 0.0294
16:01-17:00, Mon., 23 Feb. 0.0318 0.0273 0.0293
15:01-16:00, Mon., 23 Feb. 0.0320 0.0273 0.0293
14:01-15:00, Mon., 23 Feb. 0.0311 0.0264 0.0292
13:01-14:00, Mon., 23 Feb. 0.0322 0.0270 0.0291
12:01-13:00, Mon., 23 Feb. 0.0312 0.0272 0.0292
11:01-12:00, Mon., 23 Feb. 0.0315 0.0271 0.0294
10:01-11:00, Mon., 23 Feb. 0.0318 0.0270 0.0297
09:01-10:00, Mon., 23 Feb. 0.0342 0.0279 0.0307
08:01-09:00, Mon., 23 Feb. 0.0323 0.0273 0.0301
07:01-08:00, Mon., 23 Feb. 0.0320 0.0271 0.0292
06:01-07:00, Mon., 23 Feb. 0.0308 0.0269 0.0287
05:01-06:00, Mon., 23 Feb. 0.0319 0.0266 0.0289
04:01-05:00, Mon., 23 Feb. 0.0317 0.0269 0.0291
03:01-04:00, Mon., 23 Feb. 0.0301 0.0264 0.0288
02:01-03:00, Mon., 23 Feb. 0.0315 0.0270 0.0289
01:01-02:00, Mon., 23 Feb. 0.0309 0.0268 0.0290
00:01-01:00, Mon., 23 Feb. 0.0318 0.0266 0.0291
23:01-24:00, Sun., 22 Feb. 0.0314 0.0276 0.0290
22:01-23:00, Sun., 22 Feb. 0.0310 0.0270 0.0291
21:01-22:00, Sun., 22 Feb. 0.0316 0.0273 0.0290
20:01-21:00, Sun., 22 Feb. 0.0308 0.0266 0.0288
19:01-20:00, Sun., 22 Feb. 0.0310 0.0265 0.0290
18:01-19:00, Sun., 22 Feb. 0.0308 0.0273 0.0290
17:01-18:00, Sun., 22 Feb. 0.0315 0.0269 0.0292
16:01-17:00, Sun., 22 Feb. 0.0317 0.0270 0.0293
15:01-16:00, Sun., 22 Feb. 0.0321 0.0275 0.0295
14:01-15:00, Sun., 22 Feb. 0.0314 0.0273 0.0297
13:01-14:00, Sun., 22 Feb. 0.0329 0.0276 0.0298
12:01-13:00, Sun., 22 Feb. 0.0322 0.0280 0.0301
11:01-12:00, Sun., 22 Feb. 0.0332 0.0276 0.0301
10:01-11:00, Sun., 22 Feb. 0.0332 0.0278 0.0305
09:01-10:00, Sun., 22 Feb. 0.0326 0.0282 0.0307
08:01-09:00, Sun., 22 Feb. 0.0329 0.0284 0.0309
07:01-08:00, Sun., 22 Feb. 0.0338 0.0283 0.0309
06:01-07:00, Sun., 22 Feb. 0.0332 0.0287 0.0307
05:01-06:00, Sun., 22 Feb. 0.0322 0.0287 0.0305
04:01-05:00, Sun., 22 Feb. 0.0322 0.0283 0.0303
03:01-04:00, Sun., 22 Feb. 0.0323 0.0276 0.0303
02:01-03:00, Sun., 22 Feb. 0.0326 0.0283 0.0303
01:01-02:00, Sun., 22 Feb. 0.0315 0.0280 0.0298
00:01-01:00, Sun., 22 Feb. 0.0318 0.0278 0.0297
23:01-24:00, Sat., 21 Feb. 0.0321 0.0274 0.0292
22:01-23:00, Sat., 21 Feb. 0.0311 0.0275 0.0292
21:01-22:00, Sat., 21 Feb. 0.0305 0.0268 0.0290
20:01-21:00, Sat., 21 Feb. 0.0309 0.0261 0.0290
19:01-20:00, Sat., 21 Feb. 0.0311 0.0273 0.0289
18:01-19:00, Sat., 21 Feb. 0.0307 0.0270 0.0286
17:01-18:00, Sat., 21 Feb. 0.0318 0.0270 0.0289
16:01-17:00, Sat., 21 Feb. 0.0308 0.0270 0.0290
15:01-16:00, Sat., 21 Feb. 0.0316 0.0272 0.0295
14:01-15:00, Sat., 21 Feb. 0.0313 0.0267 0.0294
13:01-14:00, Sat., 21 Feb. 0.0321 0.0270 0.0295
12:01-13:00, Sat., 21 Feb. 0.0318 0.0275 0.0297
11:01-12:00, Sat., 21 Feb. 0.0330 0.0277 0.0296
10:01-11:00, Sat., 21 Feb. 0.0327 0.0283 0.0301
09:01-10:00, Sat., 21 Feb. 0.0328 0.0287 0.0307
08:01-09:00, Sat., 21 Feb. 0.0329 0.0278 0.0309
07:01-08:00, Sat., 21 Feb. 0.0338 0.0290 0.0311
06:01-07:00, Sat., 21 Feb. 0.0331 0.0290 0.0309
05:01-06:00, Sat., 21 Feb. 0.0336 0.0291 0.0309
04:01-05:00, Sat., 21 Feb. 0.0334 0.0285 0.0308
03:01-04:00, Sat., 21 Feb. 0.0324 0.0277 0.0304
02:01-03:00, Sat., 21 Feb. 0.0331 0.0280 0.0302
01:01-02:00, Sat., 21 Feb. 0.0321 0.0289 0.0303
00:01-01:00, Sat., 21 Feb. 0.0322 0.0280 0.0298
23:01-24:00, Fri., 20 Feb. 0.0311 0.0273 0.0292
22:01-23:00, Fri., 20 Feb. 0.0308 0.0275 0.0292
21:01-22:00, Fri., 20 Feb. 0.0311 0.0272 0.0292
20:01-21:00, Fri., 20 Feb. 0.0307 0.0264 0.0289
19:01-20:00, Fri., 20 Feb. 0.0315 0.0272 0.0290
18:01-19:00, Fri., 20 Feb. 0.0310 0.0270 0.0289
17:01-18:00, Fri., 20 Feb. 0.0308 0.0271 0.0287
16:01-17:00, Fri., 20 Feb. 0.0311 0.0259 0.0289
15:01-16:00, Fri., 20 Feb. 0.0309 0.0272 0.0292
14:01-15:00, Fri., 20 Feb. 0.0325 0.0275 0.0291
13:01-14:00, Fri., 20 Feb. 0.0325 0.0274 0.0293
12:01-13:00, Fri., 20 Feb. 0.0317 0.0270 0.0292
11:01-12:00, Fri., 20 Feb. 0.0315 0.0274 0.0293
10:01-11:00, Fri., 20 Feb. 0.0317 0.0273 0.0293
09:01-10:00, Fri., 20 Feb. 0.0310 0.0266 0.0291
08:01-09:00, Fri., 20 Feb. 0.0311 0.0261 0.0292
07:01-08:00, Fri., 20 Feb. 0.0317 0.0273 0.0294
06:01-07:00, Fri., 20 Feb. 0.0312 0.0270 0.0293
05:01-06:00, Fri., 20 Feb. 0.0306 0.0277 0.0292
04:01-05:00, Fri., 20 Feb. 0.0315 0.0274 0.0291
03:01-04:00, Fri., 20 Feb. 0.0316 0.0269 0.0295
02:01-03:00, Fri., 20 Feb. 0.0315 0.0273 0.0293
01:01-02:00, Fri., 20 Feb. 0.0308 0.0273 0.0292
00:01-01:00, Fri., 20 Feb. 0.0311 0.0272 0.0292
23:01-24:00, Thu., 19 Feb. 0.0313 0.0270 0.0293
22:01-23:00, Thu., 19 Feb. 0.0314 0.0271 0.0291
21:01-22:00, Thu., 19 Feb. 0.0311 0.0259 0.0291
20:01-21:00, Thu., 19 Feb. 0.0308 0.0267 0.0287
19:01-20:00, Thu., 19 Feb. 0.0307 0.0262 0.0285
18:01-19:00, Thu., 19 Feb. 0.0308 0.0271 0.0289
17:01-18:00, Thu., 19 Feb. 0.0304 0.0266 0.0284
16:01-17:00, Thu., 19 Feb. 0.0311 0.0266 0.0288
15:01-16:00, Thu., 19 Feb. 0.0310 0.0273 0.0290
14:01-15:00, Thu., 19 Feb. 0.0325 0.0263 0.0290
13:01-14:00, Thu., 19 Feb. 0.0312 0.0273 0.0292
12:01-13:00, Thu., 19 Feb. 0.0313 0.0272 0.0290
11:01-12:00, Thu., 19 Feb. 0.0308 0.0264 0.0288
10:01-11:00, Thu., 19 Feb. 0.0314 0.0272 0.0292
09:01-10:00, Thu., 19 Feb. 0.0312 0.0269 0.0288
08:01-09:00, Thu., 19 Feb. 0.0311 0.0271 0.0290
07:01-08:00, Thu., 19 Feb. 0.0319 0.0263 0.0290
06:01-07:00, Thu., 19 Feb. 0.0321 0.0267 0.0291
05:01-06:00, Thu., 19 Feb. 0.0318 0.0270 0.0290
04:01-05:00, Thu., 19 Feb. 0.0314 0.0273 0.0291
03:01-04:00, Thu., 19 Feb. 0.0310 0.0270 0.0293
02:01-03:00, Thu., 19 Feb. 0.0322 0.0275 0.0294
01:01-02:00, Thu., 19 Feb. 0.0326 0.0282 0.0300
00:01-01:00, Thu., 19 Feb. 0.0324 0.0276 0.0304
23:01-24:00, Wed., 18 Feb. 0.0326 0.0278 0.0303
22:01-23:00, Wed., 18 Feb. 0.0319 0.0283 0.0300
21:01-22:00, Wed., 18 Feb. 0.0311 0.0275 0.0295
20:01-21:00, Wed., 18 Feb. 0.0320 0.0274 0.0295
19:01-20:00, Wed., 18 Feb. 0.0312 0.0270 0.0292
18:01-19:00, Wed., 18 Feb. 0.0319 0.0274 0.0292
17:01-18:00, Wed., 18 Feb. 0.0308 0.0277 0.0293
16:01-17:00, Wed., 18 Feb. 0.0317 0.0261 0.0293
15:01-16:00, Wed., 18 Feb. 0.0317 0.0260 0.0293
14:01-15:00, Wed., 18 Feb. 0.0317 0.0272 0.0294
13:01-14:00, Wed., 18 Feb. 0.0317 0.0266 0.0293
12:01-13:00, Wed., 18 Feb. 0.0313 0.0276 0.0294
11:01-12:00, Wed., 18 Feb. 0.0318 0.0278 0.0296
10:01-11:00, Wed., 18 Feb. 0.0327 0.0273 0.0299
09:01-10:00, Wed., 18 Feb. 0.0320 0.0276 0.0297
08:01-09:00, Wed., 18 Feb. 0.0312 0.0270 0.0292
07:01-08:00, Wed., 18 Feb. 0.0310 0.0271 0.0291
06:01-07:00, Wed., 18 Feb. 0.0315 0.0269 0.0293
05:01-06:00, Wed., 18 Feb. 0.0312 0.0270 0.0292
04:01-05:00, Wed., 18 Feb. 0.0311 0.0262 0.0295
03:01-04:00, Wed., 18 Feb. 0.0326 0.0274 0.0294
02:01-03:00, Wed., 18 Feb. 0.0311 0.0272 0.0293
01:01-02:00, Wed., 18 Feb. 0.0313 0.0274 0.0293
00:01-01:00, Wed., 18 Feb. 0.0327 0.0278 0.0301
23:01-24:00, Tue., 17 Feb. 0.0331 0.0287 0.0308
22:01-23:00, Tue., 17 Feb. 0.0326 0.0274 0.0303
21:01-22:00, Tue., 17 Feb. 0.0315 0.0275 0.0293
20:01-21:00, Tue., 17 Feb. 0.0314 0.0270 0.0292
19:01-20:00, Tue., 17 Feb. 0.0311 0.0271 0.0293
18:01-19:00, Tue., 17 Feb. 0.0313 0.0265 0.0291
17:01-18:00, Tue., 17 Feb. 0.0306 0.0266 0.0289
16:01-17:00, Tue., 17 Feb. 0.0315 0.0273 0.0291
15:01-16:00, Tue., 17 Feb. 0.0308 0.0269 0.0289
14:01-15:00, Tue., 17 Feb. 0.0318 0.0282 0.0296
13:01-14:00, Tue., 17 Feb. 0.0315 0.0274 0.0293
12:01-13:00, Tue., 17 Feb. 0.0317 0.0270 0.0292
11:01-12:00, Tue., 17 Feb. 0.0315 0.0276 0.0294