Radiation doses in the air / Measurement results by the hour (Ota)

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
14:01-15:00, Mon., 01 Jun. 0.0349 0.0304 0.0328
13:01-14:00, Mon., 01 Jun. 0.0350 0.0299 0.0326
12:01-13:00, Mon., 01 Jun. 0.0349 0.0301 0.0325
11:01-12:00, Mon., 01 Jun. 0.0345 0.0304 0.0325
10:01-11:00, Mon., 01 Jun. 0.0353 0.0302 0.0327
09:01-10:00, Mon., 01 Jun. 0.0351 0.0296 0.0326
08:01-09:00, Mon., 01 Jun. 0.0356 0.0311 0.0330
07:01-08:00, Mon., 01 Jun. 0.0352 0.0314 0.0331
06:01-07:00, Mon., 01 Jun. 0.0346 0.0313 0.0330
05:01-06:00, Mon., 01 Jun. 0.0347 0.0307 0.0326
04:01-05:00, Mon., 01 Jun. 0.0353 0.0307 0.0327
03:01-04:00, Mon., 01 Jun. 0.0348 0.0304 0.0325
02:01-03:00, Mon., 01 Jun. 0.0356 0.0291 0.0323
01:01-02:00, Mon., 01 Jun. 0.0348 0.0297 0.0325
00:01-01:00, Mon., 01 Jun. 0.0353 0.0297 0.0323
23:01-24:00, Sun., 31 May. 0.0346 0.0296 0.0323
22:01-23:00, Sun., 31 May. 0.0343 0.0294 0.0321
21:01-22:00, Sun., 31 May. 0.0352 0.0302 0.0324
20:01-21:00, Sun., 31 May. 0.0348 0.0296 0.0325
19:01-20:00, Sun., 31 May. 0.0358 0.0301 0.0326
18:01-19:00, Sun., 31 May. 0.0355 0.0300 0.0325
17:01-18:00, Sun., 31 May. 0.0358 0.0304 0.0325
16:01-17:00, Sun., 31 May. 0.0360 0.0301 0.0325
15:01-16:00, Sun., 31 May. 0.0349 0.0294 0.0322
14:01-15:00, Sun., 31 May. 0.0366 0.0297 0.0324
13:01-14:00, Sun., 31 May. 0.0348 0.0308 0.0326
12:01-13:00, Sun., 31 May. 0.0347 0.0304 0.0326
11:01-12:00, Sun., 31 May. 0.0353 0.0300 0.0326
10:01-11:00, Sun., 31 May. 0.0349 0.0301 0.0327
09:01-10:00, Sun., 31 May. 0.0349 0.0301 0.0325
08:01-09:00, Sun., 31 May. 0.0354 0.0308 0.0327
07:01-08:00, Sun., 31 May. 0.0358 0.0301 0.0325
06:01-07:00, Sun., 31 May. 0.0359 0.0307 0.0326
05:01-06:00, Sun., 31 May. 0.0354 0.0304 0.0326
04:01-05:00, Sun., 31 May. 0.0346 0.0303 0.0324
03:01-04:00, Sun., 31 May. 0.0349 0.0301 0.0323
02:01-03:00, Sun., 31 May. 0.0349 0.0300 0.0324
01:01-02:00, Sun., 31 May. 0.0350 0.0304 0.0323
00:01-01:00, Sun., 31 May. 0.0353 0.0304 0.0322
23:01-24:00, Sat., 30 May. 0.0340 0.0305 0.0322
22:01-23:00, Sat., 30 May. 0.0347 0.0298 0.0323
21:01-22:00, Sat., 30 May. 0.0345 0.0308 0.0322
20:01-21:00, Sat., 30 May. 0.0343 0.0304 0.0324
19:01-20:00, Sat., 30 May. 0.0337 0.0299 0.0319
18:01-19:00, Sat., 30 May. 0.0342 0.0297 0.0321
17:01-18:00, Sat., 30 May. 0.0343 0.0306 0.0323
16:01-17:00, Sat., 30 May. 0.0341 0.0294 0.0323
15:01-16:00, Sat., 30 May. 0.0349 0.0306 0.0327
14:01-15:00, Sat., 30 May. 0.0343 0.0306 0.0325
13:01-14:00, Sat., 30 May. 0.0343 0.0305 0.0323
12:01-13:00, Sat., 30 May. 0.0343 0.0296 0.0324
11:01-12:00, Sat., 30 May. 0.0348 0.0306 0.0324
10:01-11:00, Sat., 30 May. 0.0352 0.0297 0.0324
09:01-10:00, Sat., 30 May. 0.0343 0.0304 0.0323
08:01-09:00, Sat., 30 May. 0.0348 0.0301 0.0324
07:01-08:00, Sat., 30 May. 0.0349 0.0308 0.0323
06:01-07:00, Sat., 30 May. 0.0348 0.0296 0.0323
05:01-06:00, Sat., 30 May. 0.0348 0.0296 0.0323
04:01-05:00, Sat., 30 May. 0.0346 0.0291 0.0322
03:01-04:00, Sat., 30 May. 0.0341 0.0300 0.0326
02:01-03:00, Sat., 30 May. 0.0348 0.0291 0.0327
01:01-02:00, Sat., 30 May. 0.0346 0.0299 0.0325
00:01-01:00, Sat., 30 May. 0.0359 0.0300 0.0323
23:01-24:00, Fri., 29 May. 0.0349 0.0308 0.0324
22:01-23:00, Fri., 29 May. 0.0339 0.0297 0.0320
21:01-22:00, Fri., 29 May. 0.0343 0.0298 0.0323
20:01-21:00, Fri., 29 May. 0.0353 0.0297 0.0325
19:01-20:00, Fri., 29 May. 0.0342 0.0304 0.0325
18:01-19:00, Fri., 29 May. 0.0343 0.0300 0.0320
17:01-18:00, Fri., 29 May. 0.0332 0.0294 0.0320
16:01-17:00, Fri., 29 May. 0.0347 0.0304 0.0323
15:01-16:00, Fri., 29 May. 0.0344 0.0300 0.0325
14:01-15:00, Fri., 29 May. 0.0353 0.0302 0.0327
13:01-14:00, Fri., 29 May. 0.0350 0.0303 0.0326
12:01-13:00, Fri., 29 May. 0.0357 0.0299 0.0326
11:01-12:00, Fri., 29 May. 0.0344 0.0310 0.0325
10:01-11:00, Fri., 29 May. 0.0353 0.0303 0.0325
09:01-10:00, Fri., 29 May. 0.0345 0.0292 0.0325
08:01-09:00, Fri., 29 May. 0.0355 0.0306 0.0328
07:01-08:00, Fri., 29 May. 0.0354 0.0303 0.0328
06:01-07:00, Fri., 29 May. 0.0351 0.0301 0.0324
05:01-06:00, Fri., 29 May. 0.0350 0.0302 0.0328
04:01-05:00, Fri., 29 May. 0.0355 0.0302 0.0325
03:01-04:00, Fri., 29 May. 0.0337 0.0304 0.0322
02:01-03:00, Fri., 29 May. 0.0363 0.0297 0.0322
01:01-02:00, Fri., 29 May. 0.0341 0.0298 0.0320
00:01-01:00, Fri., 29 May. 0.0337 0.0297 0.0322
23:01-24:00, Thu., 28 May. 0.0344 0.0297 0.0320
22:01-23:00, Thu., 28 May. 0.0343 0.0297 0.0321
21:01-22:00, Thu., 28 May. 0.0350 0.0301 0.0322
20:01-21:00, Thu., 28 May. 0.0344 0.0294 0.0319
19:01-20:00, Thu., 28 May. 0.0339 0.0297 0.0316
18:01-19:00, Thu., 28 May. 0.0347 0.0300 0.0320
17:01-18:00, Thu., 28 May. 0.0346 0.0299 0.0318
16:01-17:00, Thu., 28 May. 0.0347 0.0294 0.0317
15:01-16:00, Thu., 28 May. 0.0339 0.0297 0.0315
14:01-15:00, Thu., 28 May. 0.0343 0.0285 0.0318
13:01-14:00, Thu., 28 May. 0.0347 0.0301 0.0320
12:01-13:00, Thu., 28 May. 0.0343 0.0297 0.0318
11:01-12:00, Thu., 28 May. 0.0335 0.0296 0.0316
10:01-11:00, Thu., 28 May. 0.0342 0.0290 0.0319
09:01-10:00, Thu., 28 May. 0.0334 0.0292 0.0316
08:01-09:00, Thu., 28 May. 0.0339 0.0296 0.0317
07:01-08:00, Thu., 28 May. 0.0349 0.0299 0.0317
06:01-07:00, Thu., 28 May. 0.0352 0.0296 0.0319
05:01-06:00, Thu., 28 May. 0.0343 0.0294 0.0317
04:01-05:00, Thu., 28 May. 0.0350 0.0296 0.0320
03:01-04:00, Thu., 28 May. 0.0336 0.0294 0.0317
02:01-03:00, Thu., 28 May. 0.0344 0.0294 0.0316
01:01-02:00, Thu., 28 May. 0.0342 0.0304 0.0322
00:01-01:00, Thu., 28 May. 0.0346 0.0287 0.0318
23:01-24:00, Wed., 27 May. 0.0344 0.0293 0.0318
22:01-23:00, Wed., 27 May. 0.0343 0.0283 0.0315
21:01-22:00, Wed., 27 May. 0.0346 0.0290 0.0315
20:01-21:00, Wed., 27 May. 0.0335 0.0291 0.0316
19:01-20:00, Wed., 27 May. 0.0344 0.0297 0.0318
18:01-19:00, Wed., 27 May. 0.0338 0.0293 0.0317
17:01-18:00, Wed., 27 May. 0.0337 0.0295 0.0317
16:01-17:00, Wed., 27 May. 0.0339 0.0294 0.0317
15:01-16:00, Wed., 27 May. 0.0338 0.0286 0.0313
14:01-15:00, Wed., 27 May. 0.0346 0.0297 0.0320
13:01-14:00, Wed., 27 May. 0.0337 0.0294 0.0316
12:01-13:00, Wed., 27 May. 0.0343 0.0299 0.0319
11:01-12:00, Wed., 27 May. 0.0342 0.0288 0.0316
10:01-11:00, Wed., 27 May. 0.0339 0.0295 0.0316
09:01-10:00, Wed., 27 May. 0.0341 0.0290 0.0312
08:01-09:00, Wed., 27 May. 0.0336 0.0284 0.0313
07:01-08:00, Wed., 27 May. 0.0340 0.0294 0.0319
06:01-07:00, Wed., 27 May. 0.0335 0.0291 0.0316
05:01-06:00, Wed., 27 May. 0.0337 0.0292 0.0314
04:01-05:00, Wed., 27 May. 0.0337 0.0298 0.0314
03:01-04:00, Wed., 27 May. 0.0340 0.0298 0.0317
02:01-03:00, Wed., 27 May. 0.0338 0.0293 0.0313
01:01-02:00, Wed., 27 May. 0.0337 0.0288 0.0314
00:01-01:00, Wed., 27 May. 0.0347 0.0289 0.0316
23:01-24:00, Tue., 26 May. 0.0345 0.0288 0.0314
22:01-23:00, Tue., 26 May. 0.0336 0.0284 0.0312
21:01-22:00, Tue., 26 May. 0.0341 0.0290 0.0314
20:01-21:00, Tue., 26 May. 0.0334 0.0283 0.0313
19:01-20:00, Tue., 26 May. 0.0342 0.0287 0.0314
18:01-19:00, Tue., 26 May. 0.0334 0.0295 0.0314
17:01-18:00, Tue., 26 May. 0.0339 0.0290 0.0313
16:01-17:00, Tue., 26 May. 0.0344 0.0286 0.0314
15:01-16:00, Tue., 26 May. 0.0339 0.0294 0.0315
14:01-15:00, Tue., 26 May. 0.0339 0.0296 0.0318
13:01-14:00, Tue., 26 May. 0.0341 0.0293 0.0315
12:01-13:00, Tue., 26 May. 0.0342 0.0287 0.0316
11:01-12:00, Tue., 26 May. 0.0353 0.0289 0.0314
10:01-11:00, Tue., 26 May. 0.0333 0.0287 0.0314
09:01-10:00, Tue., 26 May. 0.0346 0.0294 0.0316
08:01-09:00, Tue., 26 May. 0.0336 0.0291 0.0313
07:01-08:00, Tue., 26 May. 0.0348 0.0283 0.0313
06:01-07:00, Tue., 26 May. 0.0352 0.0290 0.0316
05:01-06:00, Tue., 26 May. 0.0331 0.0296 0.0314
04:01-05:00, Tue., 26 May. 0.0337 0.0292 0.0315
03:01-04:00, Tue., 26 May. 0.0336 0.0295 0.0315
02:01-03:00, Tue., 26 May. 0.0332 0.0287 0.0314
01:01-02:00, Tue., 26 May. 0.0336 0.0290 0.0313
00:01-01:00, Tue., 26 May. 0.0351 0.0287 0.0315
23:01-24:00, Mon., 25 May. 0.0338 0.0295 0.0315
22:01-23:00, Mon., 25 May. 0.0338 0.0291 0.0314
21:01-22:00, Mon., 25 May. 0.0336 0.0294 0.0313
20:01-21:00, Mon., 25 May. 0.0343 0.0289 0.0311
19:01-20:00, Mon., 25 May. 0.0335 0.0288 0.0314
18:01-19:00, Mon., 25 May. 0.0339 0.0293 0.0313
17:01-18:00, Mon., 25 May. 0.0337 0.0297 0.0314
16:01-17:00, Mon., 25 May. 0.0343 0.0292 0.0311
15:01-16:00, Mon., 25 May. 0.0337 0.0283 0.0311
14:01-15:00, Mon., 25 May. 0.0339 0.0288 0.0314
13:01-14:00, Mon., 25 May. 0.0336 0.0296 0.0313
12:01-13:00, Mon., 25 May. 0.0336 0.0291 0.0313
11:01-12:00, Mon., 25 May. 0.0333 0.0291 0.0313
10:01-11:00, Mon., 25 May. 0.0336 0.0288 0.0311
09:01-10:00, Mon., 25 May. 0.0341 0.0291 0.0314
08:01-09:00, Mon., 25 May. 0.0332 0.0293 0.0313
07:01-08:00, Mon., 25 May. 0.0334 0.0291 0.0312
06:01-07:00, Mon., 25 May. 0.0339 0.0291 0.0314
05:01-06:00, Mon., 25 May. 0.0332 0.0284 0.0313
04:01-05:00, Mon., 25 May. 0.0332 0.0286 0.0310
03:01-04:00, Mon., 25 May. 0.0332 0.0290 0.0312
02:01-03:00, Mon., 25 May. 0.0342 0.0283 0.0313
01:01-02:00, Mon., 25 May. 0.0334 0.0295 0.0313
00:01-01:00, Mon., 25 May. 0.0338 0.0290 0.0311
23:01-24:00, Sun., 24 May. 0.0339 0.0280 0.0312
22:01-23:00, Sun., 24 May. 0.0338 0.0288 0.0314
21:01-22:00, Sun., 24 May. 0.0335 0.0287 0.0311
20:01-21:00, Sun., 24 May. 0.0338 0.0289 0.0310
19:01-20:00, Sun., 24 May. 0.0332 0.0289 0.0311
18:01-19:00, Sun., 24 May. 0.0340 0.0284 0.0311
17:01-18:00, Sun., 24 May. 0.0330 0.0283 0.0311
16:01-17:00, Sun., 24 May. 0.0332 0.0284 0.0308
15:01-16:00, Sun., 24 May. 0.0336 0.0290 0.0311
14:01-15:00, Sun., 24 May. 0.0338 0.0293 0.0314
13:01-14:00, Sun., 24 May. 0.0337 0.0294 0.0311
12:01-13:00, Sun., 24 May. 0.0342 0.0287 0.0313
11:01-12:00, Sun., 24 May. 0.0328 0.0286 0.0311
10:01-11:00, Sun., 24 May. 0.0345 0.0293 0.0313
09:01-10:00, Sun., 24 May. 0.0332 0.0291 0.0311
08:01-09:00, Sun., 24 May. 0.0330 0.0295 0.0312
07:01-08:00, Sun., 24 May. 0.0334 0.0286 0.0309
06:01-07:00, Sun., 24 May. 0.0333 0.0288 0.0308
05:01-06:00, Sun., 24 May. 0.0339 0.0285 0.0310
04:01-05:00, Sun., 24 May. 0.0329 0.0289 0.0312
03:01-04:00, Sun., 24 May. 0.0336 0.0293 0.0313
02:01-03:00, Sun., 24 May. 0.0349 0.0298 0.0317
01:01-02:00, Sun., 24 May. 0.0358 0.0311 0.0330
00:01-01:00, Sun., 24 May. 0.0356 0.0283 0.0319
23:01-24:00, Sat., 23 May. 0.0325 0.0278 0.0308
22:01-23:00, Sat., 23 May. 0.0327 0.0285 0.0308
21:01-22:00, Sat., 23 May. 0.0336 0.0280 0.0309
20:01-21:00, Sat., 23 May. 0.0332 0.0280 0.0305
19:01-20:00, Sat., 23 May. 0.0334 0.0280 0.0308
18:01-19:00, Sat., 23 May. 0.0325 0.0287 0.0306
17:01-18:00, Sat., 23 May. 0.0328 0.0277 0.0307
16:01-17:00, Sat., 23 May. 0.0326 0.0287 0.0307
15:01-16:00, Sat., 23 May. 0.0327 0.0286 0.0310
14:01-15:00, Sat., 23 May. 0.0330 0.0283 0.0311
13:01-14:00, Sat., 23 May. 0.0332 0.0289 0.0311
12:01-13:00, Sat., 23 May. 0.0332 0.0283 0.0309
11:01-12:00, Sat., 23 May. 0.0331 0.0295 0.0311
10:01-11:00, Sat., 23 May. 0.0326 0.0284 0.0308
09:01-10:00, Sat., 23 May. 0.0331 0.0287 0.0309
08:01-09:00, Sat., 23 May. 0.0336 0.0285 0.0309
07:01-08:00, Sat., 23 May. 0.0329 0.0287 0.0310
06:01-07:00, Sat., 23 May. 0.0329 0.0286 0.0309
05:01-06:00, Sat., 23 May. 0.0335 0.0282 0.0311
04:01-05:00, Sat., 23 May. 0.0328 0.0290 0.0309
03:01-04:00, Sat., 23 May. 0.0335 0.0290 0.0311
02:01-03:00, Sat., 23 May. 0.0332 0.0287 0.0310
01:01-02:00, Sat., 23 May. 0.0334 0.0287 0.0311
00:01-01:00, Sat., 23 May. 0.0339 0.0282 0.0312
23:01-24:00, Fri., 22 May. 0.0330 0.0279 0.0310
22:01-23:00, Fri., 22 May. 0.0333 0.0290 0.0309
21:01-22:00, Fri., 22 May. 0.0332 0.0283 0.0310
20:01-21:00, Fri., 22 May. 0.0332 0.0290 0.0308
19:01-20:00, Fri., 22 May. 0.0339 0.0290 0.0309
18:01-19:00, Fri., 22 May. 0.0336 0.0295 0.0315
17:01-18:00, Fri., 22 May. 0.0350 0.0295 0.0319
16:01-17:00, Fri., 22 May. 0.0364 0.0312 0.0338
15:01-16:00, Fri., 22 May. 0.0347 0.0298 0.0325