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
12:01-13:00, Sat., 07 Feb. 0.0353 0.0294 0.0323
11:01-12:00, Sat., 07 Feb. 0.0336 0.0296 0.0318
10:01-11:00, Sat., 07 Feb. 0.0338 0.0296 0.0314
09:01-10:00, Sat., 07 Feb. 0.0329 0.0280 0.0307
08:01-09:00, Sat., 07 Feb. 0.0326 0.0270 0.0307
07:01-08:00, Sat., 07 Feb. 0.0319 0.0274 0.0303
06:01-07:00, Sat., 07 Feb. 0.0332 0.0289 0.0306
05:01-06:00, Sat., 07 Feb. 0.0321 0.0279 0.0303
04:01-05:00, Sat., 07 Feb. 0.0332 0.0284 0.0305
03:01-04:00, Sat., 07 Feb. 0.0334 0.0278 0.0303
02:01-03:00, Sat., 07 Feb. 0.0331 0.0283 0.0307
01:01-02:00, Sat., 07 Feb. 0.0330 0.0285 0.0304
00:01-01:00, Sat., 07 Feb. 0.0324 0.0283 0.0303
23:01-24:00, Fri., 06 Feb. 0.0325 0.0284 0.0303
22:01-23:00, Fri., 06 Feb. 0.0332 0.0279 0.0308
21:01-22:00, Fri., 06 Feb. 0.0326 0.0283 0.0306
20:01-21:00, Fri., 06 Feb. 0.0334 0.0283 0.0310
19:01-20:00, Fri., 06 Feb. 0.0326 0.0287 0.0307
18:01-19:00, Fri., 06 Feb. 0.0337 0.0283 0.0303
17:01-18:00, Fri., 06 Feb. 0.0322 0.0284 0.0304
16:01-17:00, Fri., 06 Feb. 0.0332 0.0279 0.0304
15:01-16:00, Fri., 06 Feb. 0.0329 0.0287 0.0305
14:01-15:00, Fri., 06 Feb. 0.0329 0.0284 0.0307
13:01-14:00, Fri., 06 Feb. 0.0332 0.0290 0.0310
12:01-13:00, Fri., 06 Feb. 0.0336 0.0291 0.0314
11:01-12:00, Fri., 06 Feb. 0.0344 0.0292 0.0319
10:01-11:00, Fri., 06 Feb. 0.0336 0.0298 0.0317
09:01-10:00, Fri., 06 Feb. 0.0338 0.0291 0.0318
08:01-09:00, Fri., 06 Feb. 0.0334 0.0283 0.0317
07:01-08:00, Fri., 06 Feb. 0.0338 0.0293 0.0315
06:01-07:00, Fri., 06 Feb. 0.0330 0.0293 0.0312
05:01-06:00, Fri., 06 Feb. 0.0344 0.0294 0.0315
04:01-05:00, Fri., 06 Feb. 0.0335 0.0294 0.0315
03:01-04:00, Fri., 06 Feb. 0.0336 0.0293 0.0312
02:01-03:00, Fri., 06 Feb. 0.0336 0.0296 0.0312
01:01-02:00, Fri., 06 Feb. 0.0329 0.0292 0.0311
00:01-01:00, Fri., 06 Feb. 0.0336 0.0289 0.0313
23:01-24:00, Thu., 05 Feb. 0.0327 0.0289 0.0309
22:01-23:00, Thu., 05 Feb. 0.0325 0.0285 0.0306
21:01-22:00, Thu., 05 Feb. 0.0326 0.0287 0.0306
20:01-21:00, Thu., 05 Feb. 0.0325 0.0270 0.0303
19:01-20:00, Thu., 05 Feb. 0.0322 0.0284 0.0299
18:01-19:00, Thu., 05 Feb. 0.0323 0.0280 0.0298
17:01-18:00, Thu., 05 Feb. 0.0321 0.0274 0.0299
16:01-17:00, Thu., 05 Feb. 0.0315 0.0279 0.0296
15:01-16:00, Thu., 05 Feb. 0.0329 0.0283 0.0302
14:01-15:00, Thu., 05 Feb. 0.0325 0.0284 0.0305
13:01-14:00, Thu., 05 Feb. 0.0336 0.0288 0.0304
12:01-13:00, Thu., 05 Feb. 0.0325 0.0290 0.0306
11:01-12:00, Thu., 05 Feb. 0.0337 0.0287 0.0311
10:01-11:00, Thu., 05 Feb. 0.0342 0.0288 0.0313
09:01-10:00, Thu., 05 Feb. 0.0342 0.0290 0.0313
08:01-09:00, Thu., 05 Feb. 0.0328 0.0294 0.0313
07:01-08:00, Thu., 05 Feb. 0.0339 0.0294 0.0312
06:01-07:00, Thu., 05 Feb. 0.0332 0.0291 0.0313
05:01-06:00, Thu., 05 Feb. 0.0340 0.0290 0.0313
04:01-05:00, Thu., 05 Feb. 0.0342 0.0289 0.0314
03:01-04:00, Thu., 05 Feb. 0.0339 0.0286 0.0312
02:01-03:00, Thu., 05 Feb. 0.0329 0.0283 0.0309
01:01-02:00, Thu., 05 Feb. 0.0332 0.0289 0.0309
00:01-01:00, Thu., 05 Feb. 0.0332 0.0287 0.0309
23:01-24:00, Wed., 04 Feb. 0.0323 0.0279 0.0307
22:01-23:00, Wed., 04 Feb. 0.0330 0.0289 0.0305
21:01-22:00, Wed., 04 Feb. 0.0325 0.0269 0.0302
20:01-21:00, Wed., 04 Feb. 0.0322 0.0282 0.0302
19:01-20:00, Wed., 04 Feb. 0.0317 0.0280 0.0298
18:01-19:00, Wed., 04 Feb. 0.0323 0.0271 0.0298
17:01-18:00, Wed., 04 Feb. 0.0317 0.0274 0.0296
16:01-17:00, Wed., 04 Feb. 0.0322 0.0270 0.0301
15:01-16:00, Wed., 04 Feb. 0.0323 0.0283 0.0302
14:01-15:00, Wed., 04 Feb. 0.0325 0.0279 0.0300
13:01-14:00, Wed., 04 Feb. 0.0324 0.0283 0.0303
12:01-13:00, Wed., 04 Feb. 0.0320 0.0286 0.0304
11:01-12:00, Wed., 04 Feb. 0.0334 0.0285 0.0306
10:01-11:00, Wed., 04 Feb. 0.0332 0.0274 0.0308
09:01-10:00, Wed., 04 Feb. 0.0325 0.0288 0.0309
08:01-09:00, Wed., 04 Feb. 0.0326 0.0281 0.0305
07:01-08:00, Wed., 04 Feb. 0.0330 0.0287 0.0306
06:01-07:00, Wed., 04 Feb. 0.0330 0.0286 0.0308
05:01-06:00, Wed., 04 Feb. 0.0332 0.0284 0.0310
04:01-05:00, Wed., 04 Feb. 0.0339 0.0287 0.0309
03:01-04:00, Wed., 04 Feb. 0.0327 0.0281 0.0308
02:01-03:00, Wed., 04 Feb. 0.0333 0.0288 0.0308
01:01-02:00, Wed., 04 Feb. 0.0326 0.0286 0.0302
00:01-01:00, Wed., 04 Feb. 0.0327 0.0283 0.0305
23:01-24:00, Tue., 03 Feb. 0.0331 0.0288 0.0303
22:01-23:00, Tue., 03 Feb. 0.0328 0.0282 0.0300
21:01-22:00, Tue., 03 Feb. 0.0324 0.0280 0.0299
20:01-21:00, Tue., 03 Feb. 0.0319 0.0276 0.0298
19:01-20:00, Tue., 03 Feb. 0.0318 0.0280 0.0297
18:01-19:00, Tue., 03 Feb. 0.0325 0.0280 0.0296
17:01-18:00, Tue., 03 Feb. 0.0311 0.0282 0.0294
16:01-17:00, Tue., 03 Feb. 0.0313 0.0275 0.0294
15:01-16:00, Tue., 03 Feb. 0.0312 0.0272 0.0294
14:01-15:00, Tue., 03 Feb. 0.0325 0.0271 0.0297
13:01-14:00, Tue., 03 Feb. 0.0317 0.0271 0.0295
12:01-13:00, Tue., 03 Feb. 0.0317 0.0275 0.0296
11:01-12:00, Tue., 03 Feb. 0.0321 0.0273 0.0297
10:01-11:00, Tue., 03 Feb. 0.0327 0.0273 0.0298
09:01-10:00, Tue., 03 Feb. 0.0322 0.0278 0.0299
08:01-09:00, Tue., 03 Feb. 0.0321 0.0284 0.0300
07:01-08:00, Tue., 03 Feb. 0.0322 0.0273 0.0302
06:01-07:00, Tue., 03 Feb. 0.0329 0.0280 0.0302
05:01-06:00, Tue., 03 Feb. 0.0323 0.0279 0.0301
04:01-05:00, Tue., 03 Feb. 0.0332 0.0277 0.0307
03:01-04:00, Tue., 03 Feb. 0.0329 0.0276 0.0305
02:01-03:00, Tue., 03 Feb. 0.0325 0.0285 0.0301
01:01-02:00, Tue., 03 Feb. 0.0326 0.0280 0.0305
00:01-01:00, Tue., 03 Feb. 0.0329 0.0285 0.0303
23:01-24:00, Mon., 02 Feb. 0.0325 0.0283 0.0303
22:01-23:00, Mon., 02 Feb. 0.0321 0.0276 0.0300
21:01-22:00, Mon., 02 Feb. 0.0327 0.0270 0.0300
20:01-21:00, Mon., 02 Feb. 0.0320 0.0281 0.0301
19:01-20:00, Mon., 02 Feb. 0.0316 0.0272 0.0297
18:01-19:00, Mon., 02 Feb. 0.0322 0.0280 0.0298
17:01-18:00, Mon., 02 Feb. 0.0315 0.0267 0.0295
16:01-17:00, Mon., 02 Feb. 0.0315 0.0277 0.0296
15:01-16:00, Mon., 02 Feb. 0.0322 0.0276 0.0301
14:01-15:00, Mon., 02 Feb. 0.0329 0.0282 0.0302
13:01-14:00, Mon., 02 Feb. 0.0327 0.0285 0.0301
12:01-13:00, Mon., 02 Feb. 0.0325 0.0276 0.0301
11:01-12:00, Mon., 02 Feb. 0.0328 0.0278 0.0304
10:01-11:00, Mon., 02 Feb. 0.0330 0.0287 0.0308
09:01-10:00, Mon., 02 Feb. 0.0327 0.0290 0.0307
08:01-09:00, Mon., 02 Feb. 0.0330 0.0279 0.0305
07:01-08:00, Mon., 02 Feb. 0.0328 0.0279 0.0305
06:01-07:00, Mon., 02 Feb. 0.0322 0.0276 0.0302
05:01-06:00, Mon., 02 Feb. 0.0332 0.0287 0.0307
04:01-05:00, Mon., 02 Feb. 0.0335 0.0286 0.0305
03:01-04:00, Mon., 02 Feb. 0.0327 0.0287 0.0305
02:01-03:00, Mon., 02 Feb. 0.0329 0.0280 0.0305
01:01-02:00, Mon., 02 Feb. 0.0324 0.0288 0.0305
00:01-01:00, Mon., 02 Feb. 0.0326 0.0283 0.0305
23:01-24:00, Sun., 01 Feb. 0.0326 0.0283 0.0305
22:01-23:00, Sun., 01 Feb. 0.0325 0.0287 0.0306
21:01-22:00, Sun., 01 Feb. 0.0328 0.0283 0.0304
20:01-21:00, Sun., 01 Feb. 0.0317 0.0280 0.0301
19:01-20:00, Sun., 01 Feb. 0.0317 0.0276 0.0300
18:01-19:00, Sun., 01 Feb. 0.0325 0.0263 0.0298
17:01-18:00, Sun., 01 Feb. 0.0317 0.0270 0.0298
16:01-17:00, Sun., 01 Feb. 0.0323 0.0282 0.0300
15:01-16:00, Sun., 01 Feb. 0.0335 0.0283 0.0301
14:01-15:00, Sun., 01 Feb. 0.0328 0.0282 0.0304
13:01-14:00, Sun., 01 Feb. 0.0320 0.0291 0.0304
12:01-13:00, Sun., 01 Feb. 0.0318 0.0283 0.0304
11:01-12:00, Sun., 01 Feb. 0.0331 0.0284 0.0306
10:01-11:00, Sun., 01 Feb. 0.0329 0.0291 0.0308
09:01-10:00, Sun., 01 Feb. 0.0341 0.0287 0.0307
08:01-09:00, Sun., 01 Feb. 0.0328 0.0278 0.0306
07:01-08:00, Sun., 01 Feb. 0.0331 0.0280 0.0305
06:01-07:00, Sun., 01 Feb. 0.0329 0.0284 0.0304
05:01-06:00, Sun., 01 Feb. 0.0322 0.0280 0.0303
04:01-05:00, Sun., 01 Feb. 0.0327 0.0270 0.0301
03:01-04:00, Sun., 01 Feb. 0.0323 0.0273 0.0300
02:01-03:00, Sun., 01 Feb. 0.0318 0.0275 0.0299
01:01-02:00, Sun., 01 Feb. 0.0317 0.0275 0.0302
00:01-01:00, Sun., 01 Feb. 0.0318 0.0285 0.0300
23:01-24:00, Sat., 31 Jan. 0.0322 0.0267 0.0298
22:01-23:00, Sat., 31 Jan. 0.0312 0.0276 0.0297
21:01-22:00, Sat., 31 Jan. 0.0323 0.0266 0.0297
20:01-21:00, Sat., 31 Jan. 0.0321 0.0272 0.0298
19:01-20:00, Sat., 31 Jan. 0.0312 0.0273 0.0292
18:01-19:00, Sat., 31 Jan. 0.0314 0.0272 0.0295
17:01-18:00, Sat., 31 Jan. 0.0313 0.0276 0.0294
16:01-17:00, Sat., 31 Jan. 0.0313 0.0272 0.0293
15:01-16:00, Sat., 31 Jan. 0.0316 0.0271 0.0293
14:01-15:00, Sat., 31 Jan. 0.0321 0.0276 0.0295
13:01-14:00, Sat., 31 Jan. 0.0314 0.0278 0.0297
12:01-13:00, Sat., 31 Jan. 0.0311 0.0273 0.0296
11:01-12:00, Sat., 31 Jan. 0.0317 0.0275 0.0298
10:01-11:00, Sat., 31 Jan. 0.0338 0.0274 0.0296
09:01-10:00, Sat., 31 Jan. 0.0324 0.0274 0.0300
08:01-09:00, Sat., 31 Jan. 0.0322 0.0274 0.0298
07:01-08:00, Sat., 31 Jan. 0.0320 0.0274 0.0298
06:01-07:00, Sat., 31 Jan. 0.0320 0.0279 0.0302
05:01-06:00, Sat., 31 Jan. 0.0325 0.0272 0.0303
04:01-05:00, Sat., 31 Jan. 0.0325 0.0289 0.0305
03:01-04:00, Sat., 31 Jan. 0.0334 0.0276 0.0302
02:01-03:00, Sat., 31 Jan. 0.0325 0.0282 0.0300
01:01-02:00, Sat., 31 Jan. 0.0322 0.0282 0.0302
00:01-01:00, Sat., 31 Jan. 0.0331 0.0280 0.0301
23:01-24:00, Fri., 30 Jan. 0.0315 0.0281 0.0300
22:01-23:00, Fri., 30 Jan. 0.0321 0.0281 0.0298
21:01-22:00, Fri., 30 Jan. 0.0320 0.0273 0.0296
20:01-21:00, Fri., 30 Jan. 0.0321 0.0273 0.0298
19:01-20:00, Fri., 30 Jan. 0.0315 0.0278 0.0297
18:01-19:00, Fri., 30 Jan. 0.0311 0.0276 0.0294
17:01-18:00, Fri., 30 Jan. 0.0314 0.0275 0.0295
16:01-17:00, Fri., 30 Jan. 0.0320 0.0277 0.0296
15:01-16:00, Fri., 30 Jan. 0.0329 0.0278 0.0298
14:01-15:00, Fri., 30 Jan. 0.0320 0.0277 0.0297
13:01-14:00, Fri., 30 Jan. 0.0320 0.0274 0.0301
12:01-13:00, Fri., 30 Jan. 0.0338 0.0276 0.0303
11:01-12:00, Fri., 30 Jan. 0.0329 0.0281 0.0301
10:01-11:00, Fri., 30 Jan. 0.0327 0.0282 0.0305
09:01-10:00, Fri., 30 Jan. 0.0321 0.0283 0.0302
08:01-09:00, Fri., 30 Jan. 0.0322 0.0283 0.0304
07:01-08:00, Fri., 30 Jan. 0.0329 0.0283 0.0303
06:01-07:00, Fri., 30 Jan. 0.0319 0.0283 0.0302
05:01-06:00, Fri., 30 Jan. 0.0335 0.0285 0.0302
04:01-05:00, Fri., 30 Jan. 0.0336 0.0282 0.0300
03:01-04:00, Fri., 30 Jan. 0.0320 0.0283 0.0304
02:01-03:00, Fri., 30 Jan. 0.0326 0.0280 0.0305
01:01-02:00, Fri., 30 Jan. 0.0332 0.0283 0.0305
00:01-01:00, Fri., 30 Jan. 0.0327 0.0281 0.0305
23:01-24:00, Thu., 29 Jan. 0.0325 0.0290 0.0304
22:01-23:00, Thu., 29 Jan. 0.0331 0.0287 0.0307
21:01-22:00, Thu., 29 Jan. 0.0324 0.0283 0.0302
20:01-21:00, Thu., 29 Jan. 0.0327 0.0283 0.0305
19:01-20:00, Thu., 29 Jan. 0.0326 0.0274 0.0301
18:01-19:00, Thu., 29 Jan. 0.0317 0.0281 0.0297
17:01-18:00, Thu., 29 Jan. 0.0322 0.0274 0.0299
16:01-17:00, Thu., 29 Jan. 0.0323 0.0266 0.0296
15:01-16:00, Thu., 29 Jan. 0.0320 0.0283 0.0300
14:01-15:00, Thu., 29 Jan. 0.0335 0.0282 0.0302
13:01-14:00, Thu., 29 Jan. 0.0328 0.0273 0.0298
12:01-13:00, Thu., 29 Jan. 0.0321 0.0280 0.0301
11:01-12:00, Thu., 29 Jan. 0.0325 0.0280 0.0305
10:01-11:00, Thu., 29 Jan. 0.0332 0.0283 0.0306
09:01-10:00, Thu., 29 Jan. 0.0326 0.0277 0.0305
08:01-09:00, Thu., 29 Jan. 0.0322 0.0276 0.0305
07:01-08:00, Thu., 29 Jan. 0.0326 0.0287 0.0303
06:01-07:00, Thu., 29 Jan. 0.0339 0.0281 0.0308
05:01-06:00, Thu., 29 Jan. 0.0332 0.0279 0.0305
04:01-05:00, Thu., 29 Jan. 0.0325 0.0289 0.0304
03:01-04:00, Thu., 29 Jan. 0.0329 0.0278 0.0304
02:01-03:00, Thu., 29 Jan. 0.0328 0.0282 0.0305
01:01-02:00, Thu., 29 Jan. 0.0320 0.0280 0.0303
00:01-01:00, Thu., 29 Jan. 0.0332 0.0285 0.0304
23:01-24:00, Wed., 28 Jan. 0.0332 0.0281 0.0302
22:01-23:00, Wed., 28 Jan. 0.0322 0.0280 0.0300
21:01-22:00, Wed., 28 Jan. 0.0322 0.0280 0.0301
20:01-21:00, Wed., 28 Jan. 0.0340 0.0279 0.0298
19:01-20:00, Wed., 28 Jan. 0.0316 0.0269 0.0297
18:01-19:00, Wed., 28 Jan. 0.0316 0.0276 0.0298
17:01-18:00, Wed., 28 Jan. 0.0322 0.0280 0.0298
16:01-17:00, Wed., 28 Jan. 0.0321 0.0284 0.0299
15:01-16:00, Wed., 28 Jan. 0.0322 0.0274 0.0296
14:01-15:00, Wed., 28 Jan. 0.0333 0.0281 0.0302
13:01-14:00, Wed., 28 Jan. 0.0321 0.0279 0.0303