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
21:01-22:00, Fri., 06 Mar. 0.0338 0.0292 0.0310
20:01-21:00, Fri., 06 Mar. 0.0337 0.0291 0.0315
19:01-20:00, Fri., 06 Mar. 0.0340 0.0286 0.0314
18:01-19:00, Fri., 06 Mar. 0.0343 0.0284 0.0313
17:01-18:00, Fri., 06 Mar. 0.0332 0.0296 0.0313
16:01-17:00, Fri., 06 Mar. 0.0338 0.0290 0.0311
15:01-16:00, Fri., 06 Mar. 0.0334 0.0294 0.0314
14:01-15:00, Fri., 06 Mar. 0.0337 0.0282 0.0314
13:01-14:00, Fri., 06 Mar. 0.0347 0.0294 0.0314
12:01-13:00, Fri., 06 Mar. 0.0336 0.0292 0.0312
11:01-12:00, Fri., 06 Mar. 0.0340 0.0291 0.0313
10:01-11:00, Fri., 06 Mar. 0.0341 0.0287 0.0311
09:01-10:00, Fri., 06 Mar. 0.0334 0.0284 0.0312
08:01-09:00, Fri., 06 Mar. 0.0329 0.0281 0.0309
07:01-08:00, Fri., 06 Mar. 0.0342 0.0290 0.0312
06:01-07:00, Fri., 06 Mar. 0.0331 0.0280 0.0309
05:01-06:00, Fri., 06 Mar. 0.0330 0.0282 0.0309
04:01-05:00, Fri., 06 Mar. 0.0336 0.0289 0.0310
03:01-04:00, Fri., 06 Mar. 0.0327 0.0290 0.0307
02:01-03:00, Fri., 06 Mar. 0.0329 0.0286 0.0307
01:01-02:00, Fri., 06 Mar. 0.0332 0.0287 0.0309
00:01-01:00, Fri., 06 Mar. 0.0333 0.0282 0.0310
23:01-24:00, Thu., 05 Mar. 0.0325 0.0287 0.0309
22:01-23:00, Thu., 05 Mar. 0.0336 0.0289 0.0307
21:01-22:00, Thu., 05 Mar. 0.0330 0.0294 0.0310
20:01-21:00, Thu., 05 Mar. 0.0332 0.0287 0.0308
19:01-20:00, Thu., 05 Mar. 0.0330 0.0286 0.0308
18:01-19:00, Thu., 05 Mar. 0.0332 0.0289 0.0308
17:01-18:00, Thu., 05 Mar. 0.0332 0.0279 0.0312
16:01-17:00, Thu., 05 Mar. 0.0328 0.0289 0.0312
15:01-16:00, Thu., 05 Mar. 0.0334 0.0288 0.0314
14:01-15:00, Thu., 05 Mar. 0.0332 0.0283 0.0310
13:01-14:00, Thu., 05 Mar. 0.0330 0.0294 0.0312
12:01-13:00, Thu., 05 Mar. 0.0332 0.0284 0.0314
11:01-12:00, Thu., 05 Mar. 0.0333 0.0290 0.0314
10:01-11:00, Thu., 05 Mar. 0.0334 0.0287 0.0313
09:01-10:00, Thu., 05 Mar. 0.0336 0.0293 0.0310
08:01-09:00, Thu., 05 Mar. 0.0335 0.0282 0.0311
07:01-08:00, Thu., 05 Mar. 0.0336 0.0289 0.0310
06:01-07:00, Thu., 05 Mar. 0.0327 0.0283 0.0311
05:01-06:00, Thu., 05 Mar. 0.0333 0.0290 0.0311
04:01-05:00, Thu., 05 Mar. 0.0330 0.0289 0.0313
03:01-04:00, Thu., 05 Mar. 0.0336 0.0288 0.0313
02:01-03:00, Thu., 05 Mar. 0.0337 0.0291 0.0313
01:01-02:00, Thu., 05 Mar. 0.0327 0.0292 0.0306
00:01-01:00, Thu., 05 Mar. 0.0337 0.0294 0.0310
23:01-24:00, Wed., 04 Mar. 0.0329 0.0272 0.0308
22:01-23:00, Wed., 04 Mar. 0.0329 0.0287 0.0307
21:01-22:00, Wed., 04 Mar. 0.0329 0.0290 0.0308
20:01-21:00, Wed., 04 Mar. 0.0332 0.0285 0.0309
19:01-20:00, Wed., 04 Mar. 0.0328 0.0284 0.0309
18:01-19:00, Wed., 04 Mar. 0.0327 0.0291 0.0309
17:01-18:00, Wed., 04 Mar. 0.0332 0.0287 0.0312
16:01-17:00, Wed., 04 Mar. 0.0341 0.0293 0.0313
15:01-16:00, Wed., 04 Mar. 0.0340 0.0295 0.0314
14:01-15:00, Wed., 04 Mar. 0.0347 0.0293 0.0315
13:01-14:00, Wed., 04 Mar. 0.0340 0.0281 0.0316
12:01-13:00, Wed., 04 Mar. 0.0339 0.0296 0.0316
11:01-12:00, Wed., 04 Mar. 0.0343 0.0294 0.0314
10:01-11:00, Wed., 04 Mar. 0.0349 0.0294 0.0317
09:01-10:00, Wed., 04 Mar. 0.0343 0.0289 0.0316
08:01-09:00, Wed., 04 Mar. 0.0348 0.0300 0.0320
07:01-08:00, Wed., 04 Mar. 0.0362 0.0304 0.0333
06:01-07:00, Wed., 04 Mar. 0.0423 0.0327 0.0370
05:01-06:00, Wed., 04 Mar. 0.0499 0.0394 0.0459
04:01-05:00, Wed., 04 Mar. 0.0496 0.0436 0.0466
03:01-04:00, Wed., 04 Mar. 0.0543 0.0447 0.0484
02:01-03:00, Wed., 04 Mar. 0.0520 0.0459 0.0490
01:01-02:00, Wed., 04 Mar. 0.0519 0.0457 0.0481
00:01-01:00, Wed., 04 Mar. 0.0516 0.0408 0.0465
23:01-24:00, Tue., 03 Mar. 0.0454 0.0362 0.0413
22:01-23:00, Tue., 03 Mar. 0.0514 0.0430 0.0471
21:01-22:00, Tue., 03 Mar. 0.0488 0.0349 0.0402
20:01-21:00, Tue., 03 Mar. 0.0454 0.0369 0.0410
19:01-20:00, Tue., 03 Mar. 0.0464 0.0418 0.0439
18:01-19:00, Tue., 03 Mar. 0.0478 0.0417 0.0447
17:01-18:00, Tue., 03 Mar. 0.0477 0.0380 0.0437
16:01-17:00, Tue., 03 Mar. 0.0422 0.0339 0.0377
15:01-16:00, Tue., 03 Mar. 0.0388 0.0336 0.0367
14:01-15:00, Tue., 03 Mar. 0.0452 0.0362 0.0403
13:01-14:00, Tue., 03 Mar. 0.0441 0.0363 0.0394
12:01-13:00, Tue., 03 Mar. 0.0451 0.0378 0.0415
11:01-12:00, Tue., 03 Mar. 0.0457 0.0393 0.0426
10:01-11:00, Tue., 03 Mar. 0.0468 0.0404 0.0436
09:01-10:00, Tue., 03 Mar. 0.0470 0.0360 0.0429
08:01-09:00, Tue., 03 Mar. 0.0400 0.0352 0.0375
07:01-08:00, Tue., 03 Mar. 0.0400 0.0347 0.0374
06:01-07:00, Tue., 03 Mar. 0.0380 0.0327 0.0351
05:01-06:00, Tue., 03 Mar. 0.0366 0.0304 0.0338
04:01-05:00, Tue., 03 Mar. 0.0345 0.0294 0.0317
03:01-04:00, Tue., 03 Mar. 0.0335 0.0294 0.0315
02:01-03:00, Tue., 03 Mar. 0.0339 0.0291 0.0315
01:01-02:00, Tue., 03 Mar. 0.0331 0.0295 0.0314
00:01-01:00, Tue., 03 Mar. 0.0331 0.0298 0.0314
23:01-24:00, Mon., 02 Mar. 0.0338 0.0289 0.0313
22:01-23:00, Mon., 02 Mar. 0.0336 0.0287 0.0313
21:01-22:00, Mon., 02 Mar. 0.0333 0.0288 0.0313
20:01-21:00, Mon., 02 Mar. 0.0344 0.0284 0.0313
19:01-20:00, Mon., 02 Mar. 0.0341 0.0283 0.0312
18:01-19:00, Mon., 02 Mar. 0.0352 0.0296 0.0315
17:01-18:00, Mon., 02 Mar. 0.0339 0.0297 0.0315
16:01-17:00, Mon., 02 Mar. 0.0342 0.0292 0.0316
15:01-16:00, Mon., 02 Mar. 0.0343 0.0294 0.0315
14:01-15:00, Mon., 02 Mar. 0.0344 0.0294 0.0317
13:01-14:00, Mon., 02 Mar. 0.0347 0.0291 0.0319
12:01-13:00, Mon., 02 Mar. 0.0352 0.0297 0.0323
11:01-12:00, Mon., 02 Mar. 0.0347 0.0302 0.0323
10:01-11:00, Mon., 02 Mar. 0.0343 0.0294 0.0321
09:01-10:00, Mon., 02 Mar. 0.0350 0.0291 0.0322
08:01-09:00, Mon., 02 Mar. 0.0343 0.0301 0.0320
07:01-08:00, Mon., 02 Mar. 0.0344 0.0301 0.0319
06:01-07:00, Mon., 02 Mar. 0.0343 0.0300 0.0318
05:01-06:00, Mon., 02 Mar. 0.0342 0.0302 0.0320
04:01-05:00, Mon., 02 Mar. 0.0337 0.0303 0.0322
03:01-04:00, Mon., 02 Mar. 0.0348 0.0298 0.0316
02:01-03:00, Mon., 02 Mar. 0.0347 0.0295 0.0318
01:01-02:00, Mon., 02 Mar. 0.0336 0.0292 0.0315
00:01-01:00, Mon., 02 Mar. 0.0353 0.0290 0.0319
23:01-24:00, Sun., 01 Mar. 0.0339 0.0296 0.0317
22:01-23:00, Sun., 01 Mar. 0.0336 0.0283 0.0315
21:01-22:00, Sun., 01 Mar. 0.0339 0.0279 0.0314
20:01-21:00, Sun., 01 Mar. 0.0346 0.0297 0.0318
19:01-20:00, Sun., 01 Mar. 0.0353 0.0293 0.0315
18:01-19:00, Sun., 01 Mar. 0.0334 0.0289 0.0318
17:01-18:00, Sun., 01 Mar. 0.0340 0.0293 0.0315
16:01-17:00, Sun., 01 Mar. 0.0343 0.0290 0.0315
15:01-16:00, Sun., 01 Mar. 0.0336 0.0295 0.0315
14:01-15:00, Sun., 01 Mar. 0.0336 0.0285 0.0316
13:01-14:00, Sun., 01 Mar. 0.0337 0.0289 0.0315
12:01-13:00, Sun., 01 Mar. 0.0340 0.0302 0.0317
11:01-12:00, Sun., 01 Mar. 0.0336 0.0297 0.0315
10:01-11:00, Sun., 01 Mar. 0.0339 0.0287 0.0316
09:01-10:00, Sun., 01 Mar. 0.0341 0.0297 0.0316
08:01-09:00, Sun., 01 Mar. 0.0332 0.0290 0.0316
07:01-08:00, Sun., 01 Mar. 0.0343 0.0292 0.0313
06:01-07:00, Sun., 01 Mar. 0.0332 0.0293 0.0314
05:01-06:00, Sun., 01 Mar. 0.0335 0.0291 0.0314
04:01-05:00, Sun., 01 Mar. 0.0339 0.0287 0.0314
03:01-04:00, Sun., 01 Mar. 0.0329 0.0294 0.0312
02:01-03:00, Sun., 01 Mar. 0.0334 0.0292 0.0314
01:01-02:00, Sun., 01 Mar. 0.0334 0.0290 0.0312
00:01-01:00, Sun., 01 Mar. 0.0329 0.0282 0.0313
23:01-24:00, Sat., 28 Feb. 0.0343 0.0283 0.0314
22:01-23:00, Sat., 28 Feb. 0.0336 0.0290 0.0311
21:01-22:00, Sat., 28 Feb. 0.0329 0.0290 0.0312
20:01-21:00, Sat., 28 Feb. 0.0329 0.0293 0.0313
19:01-20:00, Sat., 28 Feb. 0.0341 0.0293 0.0314
18:01-19:00, Sat., 28 Feb. 0.0341 0.0294 0.0314
17:01-18:00, Sat., 28 Feb. 0.0339 0.0286 0.0315
16:01-17:00, Sat., 28 Feb. 0.0331 0.0298 0.0314
15:01-16:00, Sat., 28 Feb. 0.0335 0.0301 0.0316
14:01-15:00, Sat., 28 Feb. 0.0347 0.0293 0.0321
13:01-14:00, Sat., 28 Feb. 0.0353 0.0302 0.0320
12:01-13:00, Sat., 28 Feb. 0.0339 0.0299 0.0322
11:01-12:00, Sat., 28 Feb. 0.0347 0.0292 0.0320
10:01-11:00, Sat., 28 Feb. 0.0344 0.0301 0.0322
09:01-10:00, Sat., 28 Feb. 0.0346 0.0293 0.0320
08:01-09:00, Sat., 28 Feb. 0.0343 0.0288 0.0315
07:01-08:00, Sat., 28 Feb. 0.0336 0.0293 0.0315
06:01-07:00, Sat., 28 Feb. 0.0337 0.0289 0.0313
05:01-06:00, Sat., 28 Feb. 0.0334 0.0300 0.0314
04:01-05:00, Sat., 28 Feb. 0.0334 0.0293 0.0312
03:01-04:00, Sat., 28 Feb. 0.0333 0.0298 0.0315
02:01-03:00, Sat., 28 Feb. 0.0340 0.0289 0.0316
01:01-02:00, Sat., 28 Feb. 0.0341 0.0286 0.0311
00:01-01:00, Sat., 28 Feb. 0.0338 0.0292 0.0311
23:01-24:00, Fri., 27 Feb. 0.0339 0.0290 0.0312
22:01-23:00, Fri., 27 Feb. 0.0336 0.0293 0.0312
21:01-22:00, Fri., 27 Feb. 0.0338 0.0290 0.0316
20:01-21:00, Fri., 27 Feb. 0.0341 0.0290 0.0314
19:01-20:00, Fri., 27 Feb. 0.0346 0.0294 0.0317
18:01-19:00, Fri., 27 Feb. 0.0334 0.0284 0.0314
17:01-18:00, Fri., 27 Feb. 0.0339 0.0291 0.0318
16:01-17:00, Fri., 27 Feb. 0.0335 0.0281 0.0312
15:01-16:00, Fri., 27 Feb. 0.0340 0.0286 0.0312
14:01-15:00, Fri., 27 Feb. 0.0336 0.0294 0.0317
13:01-14:00, Fri., 27 Feb. 0.0342 0.0292 0.0315
12:01-13:00, Fri., 27 Feb. 0.0338 0.0294 0.0315
11:01-12:00, Fri., 27 Feb. 0.0343 0.0290 0.0315
10:01-11:00, Fri., 27 Feb. 0.0335 0.0294 0.0313
09:01-10:00, Fri., 27 Feb. 0.0331 0.0284 0.0306
08:01-09:00, Fri., 27 Feb. 0.0332 0.0286 0.0310
07:01-08:00, Fri., 27 Feb. 0.0337 0.0292 0.0314
06:01-07:00, Fri., 27 Feb. 0.0345 0.0287 0.0312
05:01-06:00, Fri., 27 Feb. 0.0331 0.0292 0.0312
04:01-05:00, Fri., 27 Feb. 0.0336 0.0290 0.0312
03:01-04:00, Fri., 27 Feb. 0.0334 0.0287 0.0315
02:01-03:00, Fri., 27 Feb. 0.0330 0.0285 0.0313
01:01-02:00, Fri., 27 Feb. 0.0339 0.0292 0.0313
00:01-01:00, Fri., 27 Feb. 0.0334 0.0288 0.0312
23:01-24:00, Thu., 26 Feb. 0.0333 0.0292 0.0309
22:01-23:00, Thu., 26 Feb. 0.0345 0.0282 0.0311
21:01-22:00, Thu., 26 Feb. 0.0336 0.0292 0.0312
20:01-21:00, Thu., 26 Feb. 0.0335 0.0290 0.0311
19:01-20:00, Thu., 26 Feb. 0.0336 0.0289 0.0311
18:01-19:00, Thu., 26 Feb. 0.0331 0.0290 0.0310
17:01-18:00, Thu., 26 Feb. 0.0337 0.0290 0.0311
16:01-17:00, Thu., 26 Feb. 0.0331 0.0289 0.0312
15:01-16:00, Thu., 26 Feb. 0.0339 0.0293 0.0316
14:01-15:00, Thu., 26 Feb. 0.0351 0.0287 0.0313
13:01-14:00, Thu., 26 Feb. 0.0331 0.0293 0.0312
12:01-13:00, Thu., 26 Feb. 0.0329 0.0287 0.0311
11:01-12:00, Thu., 26 Feb. 0.0333 0.0290 0.0309
10:01-11:00, Thu., 26 Feb. 0.0339 0.0283 0.0309
09:01-10:00, Thu., 26 Feb. 0.0332 0.0287 0.0310
08:01-09:00, Thu., 26 Feb. 0.0332 0.0284 0.0308
07:01-08:00, Thu., 26 Feb. 0.0347 0.0287 0.0312
06:01-07:00, Thu., 26 Feb. 0.0331 0.0290 0.0315
05:01-06:00, Thu., 26 Feb. 0.0343 0.0292 0.0315
04:01-05:00, Thu., 26 Feb. 0.0337 0.0296 0.0313
03:01-04:00, Thu., 26 Feb. 0.0343 0.0298 0.0318
02:01-03:00, Thu., 26 Feb. 0.0335 0.0280 0.0318
01:01-02:00, Thu., 26 Feb. 0.0365 0.0307 0.0338
00:01-01:00, Thu., 26 Feb. 0.0383 0.0332 0.0360
23:01-24:00, Wed., 25 Feb. 0.0396 0.0343 0.0363
22:01-23:00, Wed., 25 Feb. 0.0410 0.0353 0.0383
21:01-22:00, Wed., 25 Feb. 0.0418 0.0355 0.0389
20:01-21:00, Wed., 25 Feb. 0.0421 0.0368 0.0390
19:01-20:00, Wed., 25 Feb. 0.0415 0.0368 0.0389
18:01-19:00, Wed., 25 Feb. 0.0402 0.0333 0.0373
17:01-18:00, Wed., 25 Feb. 0.0382 0.0336 0.0356
16:01-17:00, Wed., 25 Feb. 0.0404 0.0326 0.0371
15:01-16:00, Wed., 25 Feb. 0.0436 0.0360 0.0401
14:01-15:00, Wed., 25 Feb. 0.0429 0.0362 0.0404
13:01-14:00, Wed., 25 Feb. 0.0436 0.0391 0.0414
12:01-13:00, Wed., 25 Feb. 0.0426 0.0378 0.0403
11:01-12:00, Wed., 25 Feb. 0.0429 0.0365 0.0393
10:01-11:00, Wed., 25 Feb. 0.0373 0.0333 0.0356
09:01-10:00, Wed., 25 Feb. 0.0378 0.0339 0.0358
08:01-09:00, Wed., 25 Feb. 0.0379 0.0332 0.0352
07:01-08:00, Wed., 25 Feb. 0.0380 0.0336 0.0354
06:01-07:00, Wed., 25 Feb. 0.0370 0.0320 0.0343
05:01-06:00, Wed., 25 Feb. 0.0360 0.0306 0.0332
04:01-05:00, Wed., 25 Feb. 0.0354 0.0301 0.0326
03:01-04:00, Wed., 25 Feb. 0.0360 0.0301 0.0324
02:01-03:00, Wed., 25 Feb. 0.0342 0.0290 0.0319
01:01-02:00, Wed., 25 Feb. 0.0341 0.0299 0.0323
00:01-01:00, Wed., 25 Feb. 0.0348 0.0302 0.0320
23:01-24:00, Tue., 24 Feb. 0.0341 0.0283 0.0317
22:01-23:00, Tue., 24 Feb. 0.0345 0.0299 0.0320