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
02:01-03:00, Sun., 23 Nov. 0.0325 0.0284 0.0307
01:01-02:00, Sun., 23 Nov. 0.0338 0.0277 0.0307
00:01-01:00, Sun., 23 Nov. 0.0323 0.0287 0.0304
23:01-24:00, Sat., 22 Nov. 0.0324 0.0287 0.0303
22:01-23:00, Sat., 22 Nov. 0.0326 0.0277 0.0300
21:01-22:00, Sat., 22 Nov. 0.0322 0.0279 0.0300
20:01-21:00, Sat., 22 Nov. 0.0316 0.0270 0.0296
19:01-20:00, Sat., 22 Nov. 0.0325 0.0276 0.0297
18:01-19:00, Sat., 22 Nov. 0.0315 0.0282 0.0296
17:01-18:00, Sat., 22 Nov. 0.0314 0.0273 0.0296
16:01-17:00, Sat., 22 Nov. 0.0328 0.0279 0.0299
15:01-16:00, Sat., 22 Nov. 0.0318 0.0278 0.0300
14:01-15:00, Sat., 22 Nov. 0.0322 0.0278 0.0302
13:01-14:00, Sat., 22 Nov. 0.0322 0.0282 0.0302
12:01-13:00, Sat., 22 Nov. 0.0329 0.0287 0.0305
11:01-12:00, Sat., 22 Nov. 0.0322 0.0274 0.0298
10:01-11:00, Sat., 22 Nov. 0.0320 0.0276 0.0302
09:01-10:00, Sat., 22 Nov. 0.0331 0.0286 0.0302
08:01-09:00, Sat., 22 Nov. 0.0324 0.0288 0.0304
07:01-08:00, Sat., 22 Nov. 0.0332 0.0280 0.0306
06:01-07:00, Sat., 22 Nov. 0.0327 0.0279 0.0307
05:01-06:00, Sat., 22 Nov. 0.0338 0.0290 0.0309
04:01-05:00, Sat., 22 Nov. 0.0322 0.0285 0.0308
03:01-04:00, Sat., 22 Nov. 0.0332 0.0291 0.0312
02:01-03:00, Sat., 22 Nov. 0.0335 0.0295 0.0315
01:01-02:00, Sat., 22 Nov. 0.0338 0.0289 0.0311
00:01-01:00, Sat., 22 Nov. 0.0336 0.0288 0.0313
23:01-24:00, Fri., 21 Nov. 0.0332 0.0294 0.0314
22:01-23:00, Fri., 21 Nov. 0.0332 0.0279 0.0311
21:01-22:00, Fri., 21 Nov. 0.0329 0.0288 0.0309
20:01-21:00, Fri., 21 Nov. 0.0332 0.0287 0.0308
19:01-20:00, Fri., 21 Nov. 0.0332 0.0282 0.0305
18:01-19:00, Fri., 21 Nov. 0.0329 0.0280 0.0304
17:01-18:00, Fri., 21 Nov. 0.0325 0.0266 0.0302
16:01-17:00, Fri., 21 Nov. 0.0332 0.0285 0.0306
15:01-16:00, Fri., 21 Nov. 0.0332 0.0288 0.0308
14:01-15:00, Fri., 21 Nov. 0.0333 0.0293 0.0315
13:01-14:00, Fri., 21 Nov. 0.0343 0.0287 0.0315
12:01-13:00, Fri., 21 Nov. 0.0343 0.0287 0.0315
11:01-12:00, Fri., 21 Nov. 0.0345 0.0297 0.0317
10:01-11:00, Fri., 21 Nov. 0.0367 0.0297 0.0322
09:01-10:00, Fri., 21 Nov. 0.0342 0.0295 0.0319
08:01-09:00, Fri., 21 Nov. 0.0344 0.0290 0.0321
07:01-08:00, Fri., 21 Nov. 0.0349 0.0297 0.0320
06:01-07:00, Fri., 21 Nov. 0.0342 0.0302 0.0319
05:01-06:00, Fri., 21 Nov. 0.0337 0.0304 0.0319
04:01-05:00, Fri., 21 Nov. 0.0341 0.0293 0.0316
03:01-04:00, Fri., 21 Nov. 0.0334 0.0297 0.0314
02:01-03:00, Fri., 21 Nov. 0.0340 0.0283 0.0314
01:01-02:00, Fri., 21 Nov. 0.0336 0.0292 0.0313
00:01-01:00, Fri., 21 Nov. 0.0336 0.0287 0.0308
23:01-24:00, Thu., 20 Nov. 0.0329 0.0282 0.0307
22:01-23:00, Thu., 20 Nov. 0.0327 0.0284 0.0306
21:01-22:00, Thu., 20 Nov. 0.0320 0.0279 0.0300
20:01-21:00, Thu., 20 Nov. 0.0330 0.0274 0.0300
19:01-20:00, Thu., 20 Nov. 0.0315 0.0280 0.0297
18:01-19:00, Thu., 20 Nov. 0.0318 0.0275 0.0297
17:01-18:00, Thu., 20 Nov. 0.0313 0.0274 0.0294
16:01-17:00, Thu., 20 Nov. 0.0314 0.0275 0.0294
15:01-16:00, Thu., 20 Nov. 0.0327 0.0267 0.0302
14:01-15:00, Thu., 20 Nov. 0.0330 0.0276 0.0302
13:01-14:00, Thu., 20 Nov. 0.0324 0.0276 0.0301
12:01-13:00, Thu., 20 Nov. 0.0328 0.0287 0.0302
11:01-12:00, Thu., 20 Nov. 0.0325 0.0275 0.0303
10:01-11:00, Thu., 20 Nov. 0.0331 0.0285 0.0308
09:01-10:00, Thu., 20 Nov. 0.0332 0.0290 0.0311
08:01-09:00, Thu., 20 Nov. 0.0332 0.0291 0.0309
07:01-08:00, Thu., 20 Nov. 0.0329 0.0280 0.0306
06:01-07:00, Thu., 20 Nov. 0.0326 0.0280 0.0305
05:01-06:00, Thu., 20 Nov. 0.0341 0.0288 0.0312
04:01-05:00, Thu., 20 Nov. 0.0345 0.0292 0.0316
03:01-04:00, Thu., 20 Nov. 0.0335 0.0280 0.0311
02:01-03:00, Thu., 20 Nov. 0.0332 0.0282 0.0306
01:01-02:00, Thu., 20 Nov. 0.0320 0.0288 0.0305
00:01-01:00, Thu., 20 Nov. 0.0340 0.0281 0.0305
23:01-24:00, Wed., 19 Nov. 0.0319 0.0267 0.0299
22:01-23:00, Wed., 19 Nov. 0.0326 0.0280 0.0301
21:01-22:00, Wed., 19 Nov. 0.0321 0.0276 0.0298
20:01-21:00, Wed., 19 Nov. 0.0321 0.0273 0.0296
19:01-20:00, Wed., 19 Nov. 0.0312 0.0275 0.0296
18:01-19:00, Wed., 19 Nov. 0.0318 0.0273 0.0296
17:01-18:00, Wed., 19 Nov. 0.0314 0.0272 0.0293
16:01-17:00, Wed., 19 Nov. 0.0316 0.0274 0.0290
15:01-16:00, Wed., 19 Nov. 0.0323 0.0275 0.0296
14:01-15:00, Wed., 19 Nov. 0.0318 0.0266 0.0295
13:01-14:00, Wed., 19 Nov. 0.0333 0.0276 0.0295
12:01-13:00, Wed., 19 Nov. 0.0322 0.0277 0.0296
11:01-12:00, Wed., 19 Nov. 0.0312 0.0275 0.0293
10:01-11:00, Wed., 19 Nov. 0.0318 0.0274 0.0297
09:01-10:00, Wed., 19 Nov. 0.0318 0.0275 0.0297
08:01-09:00, Wed., 19 Nov. 0.0315 0.0282 0.0298
07:01-08:00, Wed., 19 Nov. 0.0320 0.0276 0.0296
06:01-07:00, Wed., 19 Nov. 0.0319 0.0270 0.0298
05:01-06:00, Wed., 19 Nov. 0.0318 0.0274 0.0297
04:01-05:00, Wed., 19 Nov. 0.0321 0.0276 0.0300
03:01-04:00, Wed., 19 Nov. 0.0331 0.0283 0.0300
02:01-03:00, Wed., 19 Nov. 0.0325 0.0275 0.0301
01:01-02:00, Wed., 19 Nov. 0.0325 0.0274 0.0302
00:01-01:00, Wed., 19 Nov. 0.0319 0.0279 0.0300
23:01-24:00, Tue., 18 Nov. 0.0322 0.0283 0.0305
22:01-23:00, Tue., 18 Nov. 0.0332 0.0283 0.0304
21:01-22:00, Tue., 18 Nov. 0.0336 0.0280 0.0310
20:01-21:00, Tue., 18 Nov. 0.0350 0.0300 0.0321
19:01-20:00, Tue., 18 Nov. 0.0362 0.0313 0.0337
18:01-19:00, Tue., 18 Nov. 0.0329 0.0290 0.0311
17:01-18:00, Tue., 18 Nov. 0.0341 0.0288 0.0307
16:01-17:00, Tue., 18 Nov. 0.0341 0.0284 0.0308
15:01-16:00, Tue., 18 Nov. 0.0353 0.0295 0.0313
14:01-15:00, Tue., 18 Nov. 0.0367 0.0315 0.0335
13:01-14:00, Tue., 18 Nov. 0.0363 0.0285 0.0332
12:01-13:00, Tue., 18 Nov. 0.0327 0.0292 0.0309
11:01-12:00, Tue., 18 Nov. 0.0329 0.0290 0.0310
10:01-11:00, Tue., 18 Nov. 0.0332 0.0280 0.0307
09:01-10:00, Tue., 18 Nov. 0.0326 0.0285 0.0307
08:01-09:00, Tue., 18 Nov. 0.0332 0.0275 0.0305
07:01-08:00, Tue., 18 Nov. 0.0323 0.0284 0.0303
06:01-07:00, Tue., 18 Nov. 0.0315 0.0276 0.0298
05:01-06:00, Tue., 18 Nov. 0.0322 0.0280 0.0298
04:01-05:00, Tue., 18 Nov. 0.0335 0.0280 0.0300
03:01-04:00, Tue., 18 Nov. 0.0321 0.0280 0.0303
02:01-03:00, Tue., 18 Nov. 0.0320 0.0283 0.0301
01:01-02:00, Tue., 18 Nov. 0.0326 0.0283 0.0302
00:01-01:00, Tue., 18 Nov. 0.0316 0.0282 0.0300
23:01-24:00, Mon., 17 Nov. 0.0319 0.0281 0.0302
22:01-23:00, Mon., 17 Nov. 0.0322 0.0280 0.0302
21:01-22:00, Mon., 17 Nov. 0.0318 0.0281 0.0300
20:01-21:00, Mon., 17 Nov. 0.0318 0.0275 0.0297
19:01-20:00, Mon., 17 Nov. 0.0315 0.0272 0.0294
18:01-19:00, Mon., 17 Nov. 0.0316 0.0267 0.0292
17:01-18:00, Mon., 17 Nov. 0.0322 0.0276 0.0295
16:01-17:00, Mon., 17 Nov. 0.0315 0.0282 0.0295
15:01-16:00, Mon., 17 Nov. 0.0316 0.0281 0.0297
14:01-15:00, Mon., 17 Nov. 0.0321 0.0274 0.0303
13:01-14:00, Mon., 17 Nov. 0.0320 0.0280 0.0301
12:01-13:00, Mon., 17 Nov. 0.0320 0.0277 0.0299
11:01-12:00, Mon., 17 Nov. 0.0314 0.0280 0.0295
10:01-11:00, Mon., 17 Nov. 0.0323 0.0274 0.0300
09:01-10:00, Mon., 17 Nov. 0.0332 0.0284 0.0308
08:01-09:00, Mon., 17 Nov. 0.0326 0.0285 0.0307
07:01-08:00, Mon., 17 Nov. 0.0334 0.0281 0.0308
06:01-07:00, Mon., 17 Nov. 0.0344 0.0281 0.0305
05:01-06:00, Mon., 17 Nov. 0.0328 0.0282 0.0306
04:01-05:00, Mon., 17 Nov. 0.0325 0.0277 0.0304
03:01-04:00, Mon., 17 Nov. 0.0325 0.0284 0.0304
02:01-03:00, Mon., 17 Nov. 0.0334 0.0284 0.0305
01:01-02:00, Mon., 17 Nov. 0.0319 0.0283 0.0304
00:01-01:00, Mon., 17 Nov. 0.0315 0.0278 0.0298
23:01-24:00, Sun., 16 Nov. 0.0321 0.0275 0.0294
22:01-23:00, Sun., 16 Nov. 0.0316 0.0275 0.0293
21:01-22:00, Sun., 16 Nov. 0.0310 0.0266 0.0293
20:01-21:00, Sun., 16 Nov. 0.0317 0.0272 0.0293
19:01-20:00, Sun., 16 Nov. 0.0317 0.0265 0.0293
18:01-19:00, Sun., 16 Nov. 0.0315 0.0270 0.0293
17:01-18:00, Sun., 16 Nov. 0.0324 0.0271 0.0294
16:01-17:00, Sun., 16 Nov. 0.0315 0.0278 0.0297
15:01-16:00, Sun., 16 Nov. 0.0316 0.0272 0.0296
14:01-15:00, Sun., 16 Nov. 0.0319 0.0276 0.0298
13:01-14:00, Sun., 16 Nov. 0.0323 0.0286 0.0302
12:01-13:00, Sun., 16 Nov. 0.0318 0.0280 0.0299
11:01-12:00, Sun., 16 Nov. 0.0322 0.0283 0.0304
10:01-11:00, Sun., 16 Nov. 0.0336 0.0284 0.0305
09:01-10:00, Sun., 16 Nov. 0.0332 0.0283 0.0310
08:01-09:00, Sun., 16 Nov. 0.0332 0.0288 0.0310
07:01-08:00, Sun., 16 Nov. 0.0326 0.0282 0.0305
06:01-07:00, Sun., 16 Nov. 0.0329 0.0287 0.0308
05:01-06:00, Sun., 16 Nov. 0.0332 0.0283 0.0306
04:01-05:00, Sun., 16 Nov. 0.0331 0.0276 0.0307
03:01-04:00, Sun., 16 Nov. 0.0327 0.0282 0.0305
02:01-03:00, Sun., 16 Nov. 0.0328 0.0276 0.0303
01:01-02:00, Sun., 16 Nov. 0.0319 0.0282 0.0301
00:01-01:00, Sun., 16 Nov. 0.0321 0.0274 0.0295
23:01-24:00, Sat., 15 Nov. 0.0324 0.0274 0.0297
22:01-23:00, Sat., 15 Nov. 0.0319 0.0270 0.0295
21:01-22:00, Sat., 15 Nov. 0.0308 0.0267 0.0292
20:01-21:00, Sat., 15 Nov. 0.0315 0.0276 0.0295
19:01-20:00, Sat., 15 Nov. 0.0315 0.0265 0.0293
18:01-19:00, Sat., 15 Nov. 0.0318 0.0270 0.0294
17:01-18:00, Sat., 15 Nov. 0.0313 0.0273 0.0290
16:01-17:00, Sat., 15 Nov. 0.0310 0.0270 0.0295
15:01-16:00, Sat., 15 Nov. 0.0318 0.0276 0.0297
14:01-15:00, Sat., 15 Nov. 0.0328 0.0279 0.0299
13:01-14:00, Sat., 15 Nov. 0.0337 0.0282 0.0301
12:01-13:00, Sat., 15 Nov. 0.0320 0.0270 0.0299
11:01-12:00, Sat., 15 Nov. 0.0323 0.0275 0.0298
10:01-11:00, Sat., 15 Nov. 0.0316 0.0277 0.0298
09:01-10:00, Sat., 15 Nov. 0.0315 0.0270 0.0296
08:01-09:00, Sat., 15 Nov. 0.0326 0.0263 0.0295
07:01-08:00, Sat., 15 Nov. 0.0313 0.0274 0.0294
06:01-07:00, Sat., 15 Nov. 0.0326 0.0276 0.0299
05:01-06:00, Sat., 15 Nov. 0.0322 0.0278 0.0301
04:01-05:00, Sat., 15 Nov. 0.0325 0.0280 0.0303
03:01-04:00, Sat., 15 Nov. 0.0314 0.0278 0.0299
02:01-03:00, Sat., 15 Nov. 0.0320 0.0278 0.0299
01:01-02:00, Sat., 15 Nov. 0.0323 0.0276 0.0298
00:01-01:00, Sat., 15 Nov. 0.0322 0.0282 0.0299
23:01-24:00, Fri., 14 Nov. 0.0320 0.0270 0.0295
22:01-23:00, Fri., 14 Nov. 0.0315 0.0273 0.0293
21:01-22:00, Fri., 14 Nov. 0.0309 0.0274 0.0294
20:01-21:00, Fri., 14 Nov. 0.0308 0.0275 0.0291
19:01-20:00, Fri., 14 Nov. 0.0315 0.0273 0.0295
18:01-19:00, Fri., 14 Nov. 0.0312 0.0264 0.0293
17:01-18:00, Fri., 14 Nov. 0.0317 0.0272 0.0293
16:01-17:00, Fri., 14 Nov. 0.0317 0.0279 0.0295
15:01-16:00, Fri., 14 Nov. 0.0321 0.0271 0.0297
14:01-15:00, Fri., 14 Nov. 0.0320 0.0273 0.0295
13:01-14:00, Fri., 14 Nov. 0.0316 0.0262 0.0295
12:01-13:00, Fri., 14 Nov. 0.0320 0.0281 0.0298
11:01-12:00, Fri., 14 Nov. 0.0318 0.0273 0.0300
10:01-11:00, Fri., 14 Nov. 0.0325 0.0279 0.0300
09:01-10:00, Fri., 14 Nov. 0.0319 0.0279 0.0303
08:01-09:00, Fri., 14 Nov. 0.0325 0.0283 0.0304
07:01-08:00, Fri., 14 Nov. 0.0334 0.0287 0.0307
06:01-07:00, Fri., 14 Nov. 0.0326 0.0280 0.0304
05:01-06:00, Fri., 14 Nov. 0.0329 0.0294 0.0310
04:01-05:00, Fri., 14 Nov. 0.0338 0.0293 0.0313
03:01-04:00, Fri., 14 Nov. 0.0336 0.0294 0.0313
02:01-03:00, Fri., 14 Nov. 0.0337 0.0294 0.0313
01:01-02:00, Fri., 14 Nov. 0.0336 0.0295 0.0313
00:01-01:00, Fri., 14 Nov. 0.0339 0.0294 0.0314
23:01-24:00, Thu., 13 Nov. 0.0343 0.0294 0.0315
22:01-23:00, Thu., 13 Nov. 0.0335 0.0275 0.0308
21:01-22:00, Thu., 13 Nov. 0.0325 0.0286 0.0307
20:01-21:00, Thu., 13 Nov. 0.0329 0.0288 0.0306
19:01-20:00, Thu., 13 Nov. 0.0329 0.0279 0.0304
18:01-19:00, Thu., 13 Nov. 0.0326 0.0287 0.0303
17:01-18:00, Thu., 13 Nov. 0.0318 0.0283 0.0302
16:01-17:00, Thu., 13 Nov. 0.0326 0.0287 0.0305
15:01-16:00, Thu., 13 Nov. 0.0327 0.0284 0.0304
14:01-15:00, Thu., 13 Nov. 0.0333 0.0288 0.0306
13:01-14:00, Thu., 13 Nov. 0.0336 0.0278 0.0299
12:01-13:00, Thu., 13 Nov. 0.0325 0.0278 0.0303
11:01-12:00, Thu., 13 Nov. 0.0326 0.0274 0.0301
10:01-11:00, Thu., 13 Nov. 0.0321 0.0277 0.0305
09:01-10:00, Thu., 13 Nov. 0.0336 0.0290 0.0307
08:01-09:00, Thu., 13 Nov. 0.0332 0.0283 0.0307
07:01-08:00, Thu., 13 Nov. 0.0333 0.0283 0.0306
06:01-07:00, Thu., 13 Nov. 0.0331 0.0283 0.0304
05:01-06:00, Thu., 13 Nov. 0.0323 0.0283 0.0303
04:01-05:00, Thu., 13 Nov. 0.0335 0.0287 0.0305
03:01-04:00, Thu., 13 Nov. 0.0331 0.0286 0.0308