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
16:01-17:00, Fri., 09 Jan. 0.0304 0.0272 0.0288
15:01-16:00, Fri., 09 Jan. 0.0313 0.0268 0.0291
14:01-15:00, Fri., 09 Jan. 0.0322 0.0264 0.0291
13:01-14:00, Fri., 09 Jan. 0.0317 0.0265 0.0289
12:01-13:00, Fri., 09 Jan. 0.0308 0.0272 0.0292
11:01-12:00, Fri., 09 Jan. 0.0304 0.0265 0.0289
10:01-11:00, Fri., 09 Jan. 0.0310 0.0274 0.0291
09:01-10:00, Fri., 09 Jan. 0.0317 0.0263 0.0292
08:01-09:00, Fri., 09 Jan. 0.0312 0.0275 0.0293
07:01-08:00, Fri., 09 Jan. 0.0315 0.0276 0.0294
06:01-07:00, Fri., 09 Jan. 0.0315 0.0273 0.0294
05:01-06:00, Fri., 09 Jan. 0.0313 0.0275 0.0296
04:01-05:00, Fri., 09 Jan. 0.0330 0.0273 0.0300
03:01-04:00, Fri., 09 Jan. 0.0325 0.0276 0.0297
02:01-03:00, Fri., 09 Jan. 0.0322 0.0283 0.0301
01:01-02:00, Fri., 09 Jan. 0.0315 0.0280 0.0301
00:01-01:00, Fri., 09 Jan. 0.0326 0.0277 0.0303
23:01-24:00, Thu., 08 Jan. 0.0325 0.0286 0.0304
22:01-23:00, Thu., 08 Jan. 0.0326 0.0289 0.0307
21:01-22:00, Thu., 08 Jan. 0.0334 0.0285 0.0309
20:01-21:00, Thu., 08 Jan. 0.0331 0.0292 0.0310
19:01-20:00, Thu., 08 Jan. 0.0339 0.0294 0.0313
18:01-19:00, Thu., 08 Jan. 0.0331 0.0286 0.0307
17:01-18:00, Thu., 08 Jan. 0.0327 0.0292 0.0308
16:01-17:00, Thu., 08 Jan. 0.0329 0.0280 0.0308
15:01-16:00, Thu., 08 Jan. 0.0328 0.0289 0.0309
14:01-15:00, Thu., 08 Jan. 0.0328 0.0294 0.0310
13:01-14:00, Thu., 08 Jan. 0.0334 0.0286 0.0309
12:01-13:00, Thu., 08 Jan. 0.0330 0.0293 0.0311
11:01-12:00, Thu., 08 Jan. 0.0327 0.0287 0.0306
10:01-11:00, Thu., 08 Jan. 0.0328 0.0283 0.0310
09:01-10:00, Thu., 08 Jan. 0.0349 0.0297 0.0322
08:01-09:00, Thu., 08 Jan. 0.0346 0.0302 0.0324
07:01-08:00, Thu., 08 Jan. 0.0345 0.0301 0.0322
06:01-07:00, Thu., 08 Jan. 0.0339 0.0296 0.0318
05:01-06:00, Thu., 08 Jan. 0.0329 0.0292 0.0312
04:01-05:00, Thu., 08 Jan. 0.0327 0.0287 0.0310
03:01-04:00, Thu., 08 Jan. 0.0336 0.0281 0.0304
02:01-03:00, Thu., 08 Jan. 0.0335 0.0281 0.0309
01:01-02:00, Thu., 08 Jan. 0.0329 0.0280 0.0307
00:01-01:00, Thu., 08 Jan. 0.0327 0.0284 0.0305
23:01-24:00, Wed., 07 Jan. 0.0325 0.0282 0.0305
22:01-23:00, Wed., 07 Jan. 0.0314 0.0274 0.0298
21:01-22:00, Wed., 07 Jan. 0.0316 0.0275 0.0298
20:01-21:00, Wed., 07 Jan. 0.0317 0.0271 0.0295
19:01-20:00, Wed., 07 Jan. 0.0324 0.0270 0.0294
18:01-19:00, Wed., 07 Jan. 0.0307 0.0270 0.0290
17:01-18:00, Wed., 07 Jan. 0.0312 0.0280 0.0293
16:01-17:00, Wed., 07 Jan. 0.0317 0.0268 0.0294
15:01-16:00, Wed., 07 Jan. 0.0322 0.0267 0.0292
14:01-15:00, Wed., 07 Jan. 0.0312 0.0275 0.0295
13:01-14:00, Wed., 07 Jan. 0.0312 0.0273 0.0294
12:01-13:00, Wed., 07 Jan. 0.0321 0.0270 0.0295
11:01-12:00, Wed., 07 Jan. 0.0316 0.0278 0.0297
10:01-11:00, Wed., 07 Jan. 0.0325 0.0279 0.0302
09:01-10:00, Wed., 07 Jan. 0.0323 0.0276 0.0305
08:01-09:00, Wed., 07 Jan. 0.0332 0.0287 0.0306
07:01-08:00, Wed., 07 Jan. 0.0339 0.0290 0.0313
06:01-07:00, Wed., 07 Jan. 0.0346 0.0301 0.0324
05:01-06:00, Wed., 07 Jan. 0.0316 0.0280 0.0297
04:01-05:00, Wed., 07 Jan. 0.0320 0.0271 0.0297
03:01-04:00, Wed., 07 Jan. 0.0315 0.0278 0.0294
02:01-03:00, Wed., 07 Jan. 0.0319 0.0263 0.0296
01:01-02:00, Wed., 07 Jan. 0.0308 0.0270 0.0292
00:01-01:00, Wed., 07 Jan. 0.0319 0.0275 0.0294
23:01-24:00, Tue., 06 Jan. 0.0318 0.0266 0.0291
22:01-23:00, Tue., 06 Jan. 0.0312 0.0264 0.0292
21:01-22:00, Tue., 06 Jan. 0.0307 0.0266 0.0286
20:01-21:00, Tue., 06 Jan. 0.0313 0.0270 0.0291
19:01-20:00, Tue., 06 Jan. 0.0308 0.0270 0.0288
18:01-19:00, Tue., 06 Jan. 0.0305 0.0269 0.0289
17:01-18:00, Tue., 06 Jan. 0.0309 0.0273 0.0290
16:01-17:00, Tue., 06 Jan. 0.0308 0.0262 0.0291
15:01-16:00, Tue., 06 Jan. 0.0305 0.0264 0.0289
14:01-15:00, Tue., 06 Jan. 0.0316 0.0264 0.0288
13:01-14:00, Tue., 06 Jan. 0.0310 0.0273 0.0293
12:01-13:00, Tue., 06 Jan. 0.0308 0.0270 0.0291
11:01-12:00, Tue., 06 Jan. 0.0325 0.0273 0.0296
10:01-11:00, Tue., 06 Jan. 0.0318 0.0274 0.0295
09:01-10:00, Tue., 06 Jan. 0.0308 0.0266 0.0292
08:01-09:00, Tue., 06 Jan. 0.0317 0.0264 0.0291
07:01-08:00, Tue., 06 Jan. 0.0318 0.0271 0.0291
06:01-07:00, Tue., 06 Jan. 0.0312 0.0269 0.0289
05:01-06:00, Tue., 06 Jan. 0.0318 0.0273 0.0296
04:01-05:00, Tue., 06 Jan. 0.0316 0.0273 0.0298
03:01-04:00, Tue., 06 Jan. 0.0323 0.0272 0.0297
02:01-03:00, Tue., 06 Jan. 0.0321 0.0276 0.0297
01:01-02:00, Tue., 06 Jan. 0.0317 0.0268 0.0295
00:01-01:00, Tue., 06 Jan. 0.0312 0.0278 0.0296
23:01-24:00, Mon., 05 Jan. 0.0315 0.0277 0.0296
22:01-23:00, Mon., 05 Jan. 0.0317 0.0267 0.0295
21:01-22:00, Mon., 05 Jan. 0.0321 0.0278 0.0298
20:01-21:00, Mon., 05 Jan. 0.0329 0.0282 0.0300
19:01-20:00, Mon., 05 Jan. 0.0315 0.0279 0.0298
18:01-19:00, Mon., 05 Jan. 0.0322 0.0282 0.0298
17:01-18:00, Mon., 05 Jan. 0.0318 0.0268 0.0296
16:01-17:00, Mon., 05 Jan. 0.0322 0.0280 0.0297
15:01-16:00, Mon., 05 Jan. 0.0322 0.0276 0.0297
14:01-15:00, Mon., 05 Jan. 0.0319 0.0279 0.0299
13:01-14:00, Mon., 05 Jan. 0.0322 0.0280 0.0301
12:01-13:00, Mon., 05 Jan. 0.0335 0.0283 0.0302
11:01-12:00, Mon., 05 Jan. 0.0338 0.0278 0.0305
10:01-11:00, Mon., 05 Jan. 0.0331 0.0283 0.0307
09:01-10:00, Mon., 05 Jan. 0.0339 0.0292 0.0310
08:01-09:00, Mon., 05 Jan. 0.0332 0.0292 0.0312
07:01-08:00, Mon., 05 Jan. 0.0328 0.0283 0.0309
06:01-07:00, Mon., 05 Jan. 0.0325 0.0292 0.0309
05:01-06:00, Mon., 05 Jan. 0.0339 0.0283 0.0312
04:01-05:00, Mon., 05 Jan. 0.0339 0.0285 0.0312
03:01-04:00, Mon., 05 Jan. 0.0326 0.0279 0.0306
02:01-03:00, Mon., 05 Jan. 0.0326 0.0280 0.0303
01:01-02:00, Mon., 05 Jan. 0.0322 0.0281 0.0301
00:01-01:00, Mon., 05 Jan. 0.0315 0.0270 0.0298
23:01-24:00, Sun., 04 Jan. 0.0318 0.0273 0.0297
22:01-23:00, Sun., 04 Jan. 0.0318 0.0276 0.0295
21:01-22:00, Sun., 04 Jan. 0.0308 0.0273 0.0293
20:01-21:00, Sun., 04 Jan. 0.0319 0.0267 0.0291
19:01-20:00, Sun., 04 Jan. 0.0315 0.0266 0.0291
18:01-19:00, Sun., 04 Jan. 0.0319 0.0272 0.0292
17:01-18:00, Sun., 04 Jan. 0.0309 0.0266 0.0287
16:01-17:00, Sun., 04 Jan. 0.0310 0.0269 0.0287
15:01-16:00, Sun., 04 Jan. 0.0314 0.0273 0.0290
14:01-15:00, Sun., 04 Jan. 0.0314 0.0271 0.0289
13:01-14:00, Sun., 04 Jan. 0.0318 0.0273 0.0291
12:01-13:00, Sun., 04 Jan. 0.0311 0.0273 0.0292
11:01-12:00, Sun., 04 Jan. 0.0310 0.0270 0.0290
10:01-11:00, Sun., 04 Jan. 0.0317 0.0271 0.0293
09:01-10:00, Sun., 04 Jan. 0.0308 0.0268 0.0293
08:01-09:00, Sun., 04 Jan. 0.0325 0.0283 0.0296
07:01-08:00, Sun., 04 Jan. 0.0313 0.0274 0.0294
06:01-07:00, Sun., 04 Jan. 0.0320 0.0276 0.0296
05:01-06:00, Sun., 04 Jan. 0.0313 0.0273 0.0292
04:01-05:00, Sun., 04 Jan. 0.0315 0.0270 0.0293
03:01-04:00, Sun., 04 Jan. 0.0318 0.0279 0.0297
02:01-03:00, Sun., 04 Jan. 0.0316 0.0270 0.0296
01:01-02:00, Sun., 04 Jan. 0.0324 0.0274 0.0296
00:01-01:00, Sun., 04 Jan. 0.0329 0.0271 0.0298
23:01-24:00, Sat., 03 Jan. 0.0325 0.0274 0.0296
22:01-23:00, Sat., 03 Jan. 0.0308 0.0272 0.0292
21:01-22:00, Sat., 03 Jan. 0.0315 0.0273 0.0293
20:01-21:00, Sat., 03 Jan. 0.0318 0.0272 0.0291
19:01-20:00, Sat., 03 Jan. 0.0322 0.0266 0.0292
18:01-19:00, Sat., 03 Jan. 0.0308 0.0265 0.0288
17:01-18:00, Sat., 03 Jan. 0.0313 0.0270 0.0289
16:01-17:00, Sat., 03 Jan. 0.0315 0.0271 0.0290
15:01-16:00, Sat., 03 Jan. 0.0310 0.0273 0.0293
14:01-15:00, Sat., 03 Jan. 0.0312 0.0273 0.0291
13:01-14:00, Sat., 03 Jan. 0.0309 0.0274 0.0294
12:01-13:00, Sat., 03 Jan. 0.0314 0.0267 0.0291
11:01-12:00, Sat., 03 Jan. 0.0308 0.0265 0.0286
10:01-11:00, Sat., 03 Jan. 0.0308 0.0263 0.0287
09:01-10:00, Sat., 03 Jan. 0.0308 0.0258 0.0286
08:01-09:00, Sat., 03 Jan. 0.0317 0.0261 0.0291
07:01-08:00, Sat., 03 Jan. 0.0318 0.0263 0.0291
06:01-07:00, Sat., 03 Jan. 0.0308 0.0266 0.0290
05:01-06:00, Sat., 03 Jan. 0.0309 0.0270 0.0289
04:01-05:00, Sat., 03 Jan. 0.0317 0.0258 0.0289
03:01-04:00, Sat., 03 Jan. 0.0308 0.0270 0.0289
02:01-03:00, Sat., 03 Jan. 0.0307 0.0269 0.0287
01:01-02:00, Sat., 03 Jan. 0.0313 0.0265 0.0286
00:01-01:00, Sat., 03 Jan. 0.0317 0.0262 0.0289
23:01-24:00, Fri., 02 Jan. 0.0339 0.0276 0.0304
22:01-23:00, Fri., 02 Jan. 0.0409 0.0302 0.0353
21:01-22:00, Fri., 02 Jan. 0.0645 0.0401 0.0513
20:01-21:00, Fri., 02 Jan. 0.0719 0.0601 0.0670
19:01-20:00, Fri., 02 Jan. 0.0684 0.0599 0.0637
18:01-19:00, Fri., 02 Jan. 0.0645 0.0351 0.0538
17:01-18:00, Fri., 02 Jan. 0.0353 0.0267 0.0300
16:01-17:00, Fri., 02 Jan. 0.0324 0.0275 0.0298
15:01-16:00, Fri., 02 Jan. 0.0325 0.0278 0.0299
14:01-15:00, Fri., 02 Jan. 0.0313 0.0281 0.0299
13:01-14:00, Fri., 02 Jan. 0.0337 0.0283 0.0305
12:01-13:00, Fri., 02 Jan. 0.0326 0.0276 0.0308
11:01-12:00, Fri., 02 Jan. 0.0325 0.0282 0.0305
10:01-11:00, Fri., 02 Jan. 0.0336 0.0287 0.0309
09:01-10:00, Fri., 02 Jan. 0.0329 0.0279 0.0310
08:01-09:00, Fri., 02 Jan. 0.0339 0.0296 0.0313
07:01-08:00, Fri., 02 Jan. 0.0333 0.0278 0.0313
06:01-07:00, Fri., 02 Jan. 0.0331 0.0289 0.0306
05:01-06:00, Fri., 02 Jan. 0.0333 0.0286 0.0306
04:01-05:00, Fri., 02 Jan. 0.0329 0.0288 0.0307
03:01-04:00, Fri., 02 Jan. 0.0328 0.0278 0.0305
02:01-03:00, Fri., 02 Jan. 0.0319 0.0268 0.0302
01:01-02:00, Fri., 02 Jan. 0.0328 0.0277 0.0303
00:01-01:00, Fri., 02 Jan. 0.0320 0.0286 0.0302
23:01-24:00, Thu., 01 Jan. 0.0321 0.0276 0.0299
22:01-23:00, Thu., 01 Jan. 0.0316 0.0276 0.0298
21:01-22:00, Thu., 01 Jan. 0.0322 0.0281 0.0299
20:01-21:00, Thu., 01 Jan. 0.0326 0.0276 0.0300
19:01-20:00, Thu., 01 Jan. 0.0329 0.0274 0.0299
18:01-19:00, Thu., 01 Jan. 0.0322 0.0273 0.0298
17:01-18:00, Thu., 01 Jan. 0.0318 0.0280 0.0298
16:01-17:00, Thu., 01 Jan. 0.0316 0.0275 0.0295
15:01-16:00, Thu., 01 Jan. 0.0322 0.0280 0.0300
14:01-15:00, Thu., 01 Jan. 0.0318 0.0276 0.0300
13:01-14:00, Thu., 01 Jan. 0.0319 0.0273 0.0299
12:01-13:00, Thu., 01 Jan. 0.0331 0.0281 0.0302
11:01-12:00, Thu., 01 Jan. 0.0317 0.0272 0.0299
10:01-11:00, Thu., 01 Jan. 0.0329 0.0280 0.0303
09:01-10:00, Thu., 01 Jan. 0.0325 0.0283 0.0303
08:01-09:00, Thu., 01 Jan. 0.0326 0.0274 0.0305
07:01-08:00, Thu., 01 Jan. 0.0332 0.0281 0.0306
06:01-07:00, Thu., 01 Jan. 0.0324 0.0280 0.0305
05:01-06:00, Thu., 01 Jan. 0.0320 0.0275 0.0298
04:01-05:00, Thu., 01 Jan. 0.0316 0.0280 0.0299
03:01-04:00, Thu., 01 Jan. 0.0325 0.0271 0.0299
02:01-03:00, Thu., 01 Jan. 0.0330 0.0279 0.0298
01:01-02:00, Thu., 01 Jan. 0.0318 0.0281 0.0295
00:01-01:00, Thu., 01 Jan. 0.0318 0.0273 0.0298
23:01-24:00, Wed., 31 Dec. 0.0319 0.0273 0.0295
22:01-23:00, Wed., 31 Dec. 0.0322 0.0270 0.0293
21:01-22:00, Wed., 31 Dec. 0.0316 0.0279 0.0294
20:01-21:00, Wed., 31 Dec. 0.0316 0.0276 0.0296
19:01-20:00, Wed., 31 Dec. 0.0322 0.0280 0.0295
18:01-19:00, Wed., 31 Dec. 0.0308 0.0273 0.0290
17:01-18:00, Wed., 31 Dec. 0.0307 0.0276 0.0292
16:01-17:00, Wed., 31 Dec. 0.0317 0.0275 0.0292
15:01-16:00, Wed., 31 Dec. 0.0310 0.0273 0.0293
14:01-15:00, Wed., 31 Dec. 0.0309 0.0276 0.0295
13:01-14:00, Wed., 31 Dec. 0.0322 0.0275 0.0295
12:01-13:00, Wed., 31 Dec. 0.0319 0.0276 0.0298
11:01-12:00, Wed., 31 Dec. 0.0326 0.0277 0.0299
10:01-11:00, Wed., 31 Dec. 0.0335 0.0286 0.0305
09:01-10:00, Wed., 31 Dec. 0.0326 0.0284 0.0304
08:01-09:00, Wed., 31 Dec. 0.0346 0.0281 0.0306
07:01-08:00, Wed., 31 Dec. 0.0325 0.0286 0.0303
06:01-07:00, Wed., 31 Dec. 0.0319 0.0282 0.0300
05:01-06:00, Wed., 31 Dec. 0.0329 0.0285 0.0302
04:01-05:00, Wed., 31 Dec. 0.0326 0.0285 0.0303
03:01-04:00, Wed., 31 Dec. 0.0323 0.0272 0.0302
02:01-03:00, Wed., 31 Dec. 0.0320 0.0287 0.0304
01:01-02:00, Wed., 31 Dec. 0.0320 0.0283 0.0303
00:01-01:00, Wed., 31 Dec. 0.0325 0.0287 0.0303
23:01-24:00, Tue., 30 Dec. 0.0329 0.0275 0.0301
22:01-23:00, Tue., 30 Dec. 0.0329 0.0282 0.0303
21:01-22:00, Tue., 30 Dec. 0.0323 0.0280 0.0302
20:01-21:00, Tue., 30 Dec. 0.0322 0.0277 0.0299
19:01-20:00, Tue., 30 Dec. 0.0325 0.0267 0.0297
18:01-19:00, Tue., 30 Dec. 0.0313 0.0273 0.0296
17:01-18:00, Tue., 30 Dec. 0.0313 0.0270 0.0294