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

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
19:01-20:00, Sat., 01 Aug. 0.0382 0.0315 0.0349
18:01-19:00, Sat., 01 Aug. 0.0384 0.0324 0.0349
17:01-18:00, Sat., 01 Aug. 0.0372 0.0311 0.0346
16:01-17:00, Sat., 01 Aug. 0.0370 0.0325 0.0349
15:01-16:00, Sat., 01 Aug. 0.0375 0.0332 0.0353
14:01-15:00, Sat., 01 Aug. 0.0376 0.0332 0.0353
13:01-14:00, Sat., 01 Aug. 0.0378 0.0327 0.0348
12:01-13:00, Sat., 01 Aug. 0.0371 0.0330 0.0351
11:01-12:00, Sat., 01 Aug. 0.0370 0.0326 0.0349
10:01-11:00, Sat., 01 Aug. 0.0371 0.0327 0.0349
09:01-10:00, Sat., 01 Aug. 0.0371 0.0332 0.0351
08:01-09:00, Sat., 01 Aug. 0.0387 0.0337 0.0362
07:01-08:00, Sat., 01 Aug. 0.0381 0.0337 0.0362
06:01-07:00, Sat., 01 Aug. 0.0386 0.0336 0.0360
05:01-06:00, Sat., 01 Aug. 0.0383 0.0332 0.0358
04:01-05:00, Sat., 01 Aug. 0.0386 0.0329 0.0362
03:01-04:00, Sat., 01 Aug. 0.0389 0.0332 0.0358
02:01-03:00, Sat., 01 Aug. 0.0384 0.0339 0.0362
01:01-02:00, Sat., 01 Aug. 0.0381 0.0325 0.0352
00:01-01:00, Sat., 01 Aug. 0.0379 0.0329 0.0351
23:01-24:00, Fri., 31 Jul. 0.0374 0.0315 0.0351
22:01-23:00, Fri., 31 Jul. 0.0374 0.0322 0.0348
21:01-22:00, Fri., 31 Jul. 0.0374 0.0318 0.0348
20:01-21:00, Fri., 31 Jul. 0.0368 0.0318 0.0345
19:01-20:00, Fri., 31 Jul. 0.0370 0.0328 0.0348
18:01-19:00, Fri., 31 Jul. 0.0381 0.0321 0.0347
17:01-18:00, Fri., 31 Jul. 0.0374 0.0322 0.0349
16:01-17:00, Fri., 31 Jul. 0.0375 0.0318 0.0348
15:01-16:00, Fri., 31 Jul. 0.0373 0.0318 0.0347
14:01-15:00, Fri., 31 Jul. 0.0364 0.0321 0.0346
13:01-14:00, Fri., 31 Jul. 0.0376 0.0320 0.0348
12:01-13:00, Fri., 31 Jul. 0.0374 0.0332 0.0351
11:01-12:00, Fri., 31 Jul. 0.0369 0.0318 0.0348
10:01-11:00, Fri., 31 Jul. 0.0383 0.0328 0.0350
09:01-10:00, Fri., 31 Jul. 0.0382 0.0332 0.0352
08:01-09:00, Fri., 31 Jul. 0.0377 0.0325 0.0355
07:01-08:00, Fri., 31 Jul. 0.0378 0.0330 0.0354
06:01-07:00, Fri., 31 Jul. 0.0385 0.0327 0.0353
05:01-06:00, Fri., 31 Jul. 0.0377 0.0331 0.0352
04:01-05:00, Fri., 31 Jul. 0.0396 0.0332 0.0357
03:01-04:00, Fri., 31 Jul. 0.0379 0.0332 0.0355
02:01-03:00, Fri., 31 Jul. 0.0375 0.0328 0.0354
01:01-02:00, Fri., 31 Jul. 0.0370 0.0318 0.0350
00:01-01:00, Fri., 31 Jul. 0.0374 0.0325 0.0348
23:01-24:00, Thu., 30 Jul. 0.0372 0.0329 0.0350
22:01-23:00, Thu., 30 Jul. 0.0377 0.0329 0.0351
21:01-22:00, Thu., 30 Jul. 0.0375 0.0332 0.0353
20:01-21:00, Thu., 30 Jul. 0.0368 0.0321 0.0347
19:01-20:00, Thu., 30 Jul. 0.0374 0.0320 0.0350
18:01-19:00, Thu., 30 Jul. 0.0374 0.0327 0.0346
17:01-18:00, Thu., 30 Jul. 0.0360 0.0317 0.0342
16:01-17:00, Thu., 30 Jul. 0.0367 0.0314 0.0344
15:01-16:00, Thu., 30 Jul. 0.0375 0.0319 0.0344
14:01-15:00, Thu., 30 Jul. 0.0374 0.0318 0.0348
13:01-14:00, Thu., 30 Jul. 0.0377 0.0329 0.0348
12:01-13:00, Thu., 30 Jul. 0.0378 0.0325 0.0352
11:01-12:00, Thu., 30 Jul. 0.0374 0.0327 0.0348
10:01-11:00, Thu., 30 Jul. 0.0363 0.0323 0.0343
09:01-10:00, Thu., 30 Jul. 0.0374 0.0325 0.0350
08:01-09:00, Thu., 30 Jul. 0.0384 0.0335 0.0361
07:01-08:00, Thu., 30 Jul. 0.0391 0.0346 0.0369
06:01-07:00, Thu., 30 Jul. 0.0405 0.0341 0.0374
05:01-06:00, Thu., 30 Jul. 0.0386 0.0346 0.0370
04:01-05:00, Thu., 30 Jul. 0.0389 0.0335 0.0363
03:01-04:00, Thu., 30 Jul. 0.0395 0.0335 0.0361
02:01-03:00, Thu., 30 Jul. 0.0381 0.0343 0.0361
01:01-02:00, Thu., 30 Jul. 0.0389 0.0343 0.0365
00:01-01:00, Thu., 30 Jul. 0.0380 0.0341 0.0361
23:01-24:00, Wed., 29 Jul. 0.0381 0.0334 0.0359
22:01-23:00, Wed., 29 Jul. 0.0392 0.0318 0.0350
21:01-22:00, Wed., 29 Jul. 0.0363 0.0322 0.0341
20:01-21:00, Wed., 29 Jul. 0.0369 0.0311 0.0341
19:01-20:00, Wed., 29 Jul. 0.0366 0.0317 0.0341
18:01-19:00, Wed., 29 Jul. 0.0360 0.0313 0.0340
17:01-18:00, Wed., 29 Jul. 0.0372 0.0313 0.0341
16:01-17:00, Wed., 29 Jul. 0.0360 0.0316 0.0337
15:01-16:00, Wed., 29 Jul. 0.0370 0.0310 0.0342
14:01-15:00, Wed., 29 Jul. 0.0361 0.0322 0.0343
13:01-14:00, Wed., 29 Jul. 0.0369 0.0314 0.0342
12:01-13:00, Wed., 29 Jul. 0.0367 0.0317 0.0345
11:01-12:00, Wed., 29 Jul. 0.0363 0.0322 0.0342
10:01-11:00, Wed., 29 Jul. 0.0357 0.0328 0.0343
09:01-10:00, Wed., 29 Jul. 0.0374 0.0332 0.0352
08:01-09:00, Wed., 29 Jul. 0.0379 0.0328 0.0355
07:01-08:00, Wed., 29 Jul. 0.0387 0.0338 0.0363
06:01-07:00, Wed., 29 Jul. 0.0386 0.0335 0.0358
05:01-06:00, Wed., 29 Jul. 0.0379 0.0337 0.0355
04:01-05:00, Wed., 29 Jul. 0.0377 0.0327 0.0354
03:01-04:00, Wed., 29 Jul. 0.0372 0.0323 0.0347
02:01-03:00, Wed., 29 Jul. 0.0377 0.0332 0.0349
01:01-02:00, Wed., 29 Jul. 0.0385 0.0336 0.0355
00:01-01:00, Wed., 29 Jul. 0.0387 0.0325 0.0356
23:01-24:00, Tue., 28 Jul. 0.0365 0.0313 0.0341
22:01-23:00, Tue., 28 Jul. 0.0361 0.0317 0.0342
21:01-22:00, Tue., 28 Jul. 0.0364 0.0317 0.0343
20:01-21:00, Tue., 28 Jul. 0.0370 0.0323 0.0350
19:01-20:00, Tue., 28 Jul. 0.0419 0.0338 0.0381
18:01-19:00, Tue., 28 Jul. 0.0447 0.0369 0.0403
17:01-18:00, Tue., 28 Jul. 0.0376 0.0321 0.0352
16:01-17:00, Tue., 28 Jul. 0.0433 0.0347 0.0383
15:01-16:00, Tue., 28 Jul. 0.0483 0.0405 0.0448
14:01-15:00, Tue., 28 Jul. 0.0457 0.0323 0.0380
13:01-14:00, Tue., 28 Jul. 0.0357 0.0306 0.0335
12:01-13:00, Tue., 28 Jul. 0.0355 0.0317 0.0336
11:01-12:00, Tue., 28 Jul. 0.0351 0.0313 0.0335
10:01-11:00, Tue., 28 Jul. 0.0364 0.0315 0.0336
09:01-10:00, Tue., 28 Jul. 0.0354 0.0316 0.0337
08:01-09:00, Tue., 28 Jul. 0.0357 0.0309 0.0332
07:01-08:00, Tue., 28 Jul. 0.0359 0.0313 0.0333
06:01-07:00, Tue., 28 Jul. 0.0352 0.0312 0.0331
05:01-06:00, Tue., 28 Jul. 0.0350 0.0304 0.0328
04:01-05:00, Tue., 28 Jul. 0.0360 0.0308 0.0332
03:01-04:00, Tue., 28 Jul. 0.0362 0.0304 0.0333
02:01-03:00, Tue., 28 Jul. 0.0353 0.0305 0.0333
01:01-02:00, Tue., 28 Jul. 0.0364 0.0307 0.0333
00:01-01:00, Tue., 28 Jul. 0.0359 0.0303 0.0332
23:01-24:00, Mon., 27 Jul. 0.0358 0.0303 0.0334
22:01-23:00, Mon., 27 Jul. 0.0358 0.0312 0.0339
21:01-22:00, Mon., 27 Jul. 0.0370 0.0313 0.0341
20:01-21:00, Mon., 27 Jul. 0.0361 0.0313 0.0336
19:01-20:00, Mon., 27 Jul. 0.0370 0.0315 0.0342
18:01-19:00, Mon., 27 Jul. 0.0396 0.0336 0.0361
17:01-18:00, Mon., 27 Jul. 0.0478 0.0366 0.0420
16:01-17:00, Mon., 27 Jul. 0.0532 0.0444 0.0495
15:01-16:00, Mon., 27 Jul. 0.0443 0.0317 0.0357
14:01-15:00, Mon., 27 Jul. 0.0361 0.0311 0.0341
13:01-14:00, Mon., 27 Jul. 0.0360 0.0325 0.0342
12:01-13:00, Mon., 27 Jul. 0.0360 0.0311 0.0340
11:01-12:00, Mon., 27 Jul. 0.0360 0.0322 0.0341
10:01-11:00, Mon., 27 Jul. 0.0365 0.0320 0.0340
09:01-10:00, Mon., 27 Jul. 0.0372 0.0324 0.0345
08:01-09:00, Mon., 27 Jul. 0.0375 0.0322 0.0347
07:01-08:00, Mon., 27 Jul. 0.0375 0.0318 0.0346
06:01-07:00, Mon., 27 Jul. 0.0367 0.0318 0.0344
05:01-06:00, Mon., 27 Jul. 0.0360 0.0323 0.0341
04:01-05:00, Mon., 27 Jul. 0.0376 0.0320 0.0343
03:01-04:00, Mon., 27 Jul. 0.0367 0.0326 0.0347
02:01-03:00, Mon., 27 Jul. 0.0368 0.0323 0.0347
01:01-02:00, Mon., 27 Jul. 0.0377 0.0315 0.0344
00:01-01:00, Mon., 27 Jul. 0.0365 0.0318 0.0343
23:01-24:00, Sun., 26 Jul. 0.0370 0.0315 0.0344
22:01-23:00, Sun., 26 Jul. 0.0369 0.0321 0.0346
21:01-22:00, Sun., 26 Jul. 0.0382 0.0323 0.0349
20:01-21:00, Sun., 26 Jul. 0.0417 0.0341 0.0380
19:01-20:00, Sun., 26 Jul. 0.0461 0.0361 0.0416
18:01-19:00, Sun., 26 Jul. 0.0395 0.0360 0.0377
17:01-18:00, Sun., 26 Jul. 0.0371 0.0318 0.0343
16:01-17:00, Sun., 26 Jul. 0.0369 0.0319 0.0346
15:01-16:00, Sun., 26 Jul. 0.0390 0.0334 0.0355
14:01-15:00, Sun., 26 Jul. 0.0445 0.0358 0.0395
13:01-14:00, Sun., 26 Jul. 0.0545 0.0429 0.0488
12:01-13:00, Sun., 26 Jul. 0.0540 0.0321 0.0426
11:01-12:00, Sun., 26 Jul. 0.0369 0.0318 0.0341
10:01-11:00, Sun., 26 Jul. 0.0363 0.0315 0.0339
09:01-10:00, Sun., 26 Jul. 0.0357 0.0315 0.0339
08:01-09:00, Sun., 26 Jul. 0.0363 0.0318 0.0341
07:01-08:00, Sun., 26 Jul. 0.0374 0.0319 0.0344
06:01-07:00, Sun., 26 Jul. 0.0374 0.0318 0.0344
05:01-06:00, Sun., 26 Jul. 0.0368 0.0321 0.0346
04:01-05:00, Sun., 26 Jul. 0.0364 0.0319 0.0343
03:01-04:00, Sun., 26 Jul. 0.0382 0.0319 0.0345
02:01-03:00, Sun., 26 Jul. 0.0371 0.0324 0.0343
01:01-02:00, Sun., 26 Jul. 0.0370 0.0318 0.0345
00:01-01:00, Sun., 26 Jul. 0.0364 0.0317 0.0341
23:01-24:00, Sat., 25 Jul. 0.0376 0.0329 0.0346
22:01-23:00, Sat., 25 Jul. 0.0373 0.0319 0.0345
21:01-22:00, Sat., 25 Jul. 0.0363 0.0320 0.0343
20:01-21:00, Sat., 25 Jul. 0.0371 0.0320 0.0344
19:01-20:00, Sat., 25 Jul. 0.0365 0.0314 0.0341
18:01-19:00, Sat., 25 Jul. 0.0374 0.0318 0.0341
17:01-18:00, Sat., 25 Jul. 0.0365 0.0321 0.0342
16:01-17:00, Sat., 25 Jul. 0.0374 0.0317 0.0341
15:01-16:00, Sat., 25 Jul. 0.0369 0.0324 0.0345
14:01-15:00, Sat., 25 Jul. 0.0363 0.0322 0.0345
13:01-14:00, Sat., 25 Jul. 0.0374 0.0329 0.0351
12:01-13:00, Sat., 25 Jul. 0.0380 0.0325 0.0348
11:01-12:00, Sat., 25 Jul. 0.0366 0.0321 0.0345
10:01-11:00, Sat., 25 Jul. 0.0365 0.0324 0.0346
09:01-10:00, Sat., 25 Jul. 0.0372 0.0323 0.0347
08:01-09:00, Sat., 25 Jul. 0.0376 0.0329 0.0351
07:01-08:00, Sat., 25 Jul. 0.0367 0.0324 0.0346
06:01-07:00, Sat., 25 Jul. 0.0376 0.0321 0.0347
05:01-06:00, Sat., 25 Jul. 0.0369 0.0319 0.0345
04:01-05:00, Sat., 25 Jul. 0.0376 0.0318 0.0342
03:01-04:00, Sat., 25 Jul. 0.0366 0.0325 0.0342
02:01-03:00, Sat., 25 Jul. 0.0363 0.0309 0.0344
01:01-02:00, Sat., 25 Jul. 0.0363 0.0325 0.0344
00:01-01:00, Sat., 25 Jul. 0.0360 0.0315 0.0339
23:01-24:00, Fri., 24 Jul. 0.0370 0.0312 0.0342
22:01-23:00, Fri., 24 Jul. 0.0371 0.0317 0.0347
21:01-22:00, Fri., 24 Jul. 0.0362 0.0312 0.0345
20:01-21:00, Fri., 24 Jul. 0.0384 0.0325 0.0356
19:01-20:00, Fri., 24 Jul. 0.0443 0.0346 0.0394
18:01-19:00, Fri., 24 Jul. 0.0450 0.0323 0.0396
17:01-18:00, Fri., 24 Jul. 0.0365 0.0315 0.0342
16:01-17:00, Fri., 24 Jul. 0.0361 0.0315 0.0338
15:01-16:00, Fri., 24 Jul. 0.0381 0.0322 0.0341
14:01-15:00, Fri., 24 Jul. 0.0361 0.0311 0.0339
13:01-14:00, Fri., 24 Jul. 0.0364 0.0319 0.0340
12:01-13:00, Fri., 24 Jul. 0.0367 0.0320 0.0340
11:01-12:00, Fri., 24 Jul. 0.0363 0.0323 0.0341
10:01-11:00, Fri., 24 Jul. 0.0362 0.0322 0.0340
09:01-10:00, Fri., 24 Jul. 0.0361 0.0316 0.0341
08:01-09:00, Fri., 24 Jul. 0.0367 0.0320 0.0340
07:01-08:00, Fri., 24 Jul. 0.0374 0.0323 0.0347
06:01-07:00, Fri., 24 Jul. 0.0371 0.0329 0.0349
05:01-06:00, Fri., 24 Jul. 0.0370 0.0312 0.0347
04:01-05:00, Fri., 24 Jul. 0.0372 0.0322 0.0350
03:01-04:00, Fri., 24 Jul. 0.0374 0.0316 0.0347
02:01-03:00, Fri., 24 Jul. 0.0377 0.0322 0.0345
01:01-02:00, Fri., 24 Jul. 0.0375 0.0319 0.0343
00:01-01:00, Fri., 24 Jul. 0.0363 0.0310 0.0342
23:01-24:00, Thu., 23 Jul. 0.0366 0.0324 0.0345
22:01-23:00, Thu., 23 Jul. 0.0364 0.0308 0.0341
21:01-22:00, Thu., 23 Jul. 0.0363 0.0317 0.0341
20:01-21:00, Thu., 23 Jul. 0.0375 0.0320 0.0340
19:01-20:00, Thu., 23 Jul. 0.0366 0.0323 0.0341
18:01-19:00, Thu., 23 Jul. 0.0363 0.0313 0.0340
17:01-18:00, Thu., 23 Jul. 0.0360 0.0320 0.0340
16:01-17:00, Thu., 23 Jul. 0.0360 0.0318 0.0338
15:01-16:00, Thu., 23 Jul. 0.0368 0.0311 0.0339
14:01-15:00, Thu., 23 Jul. 0.0369 0.0315 0.0342
13:01-14:00, Thu., 23 Jul. 0.0371 0.0322 0.0346
12:01-13:00, Thu., 23 Jul. 0.0371 0.0326 0.0347
11:01-12:00, Thu., 23 Jul. 0.0371 0.0319 0.0348
10:01-11:00, Thu., 23 Jul. 0.0368 0.0324 0.0346
09:01-10:00, Thu., 23 Jul. 0.0367 0.0320 0.0347
08:01-09:00, Thu., 23 Jul. 0.0370 0.0320 0.0345
07:01-08:00, Thu., 23 Jul. 0.0388 0.0326 0.0354
06:01-07:00, Thu., 23 Jul. 0.0373 0.0322 0.0352
05:01-06:00, Thu., 23 Jul. 0.0376 0.0323 0.0347
04:01-05:00, Thu., 23 Jul. 0.0367 0.0319 0.0345
03:01-04:00, Thu., 23 Jul. 0.0376 0.0317 0.0346
02:01-03:00, Thu., 23 Jul. 0.0364 0.0326 0.0346
01:01-02:00, Thu., 23 Jul. 0.0367 0.0319 0.0344
00:01-01:00, Thu., 23 Jul. 0.0368 0.0322 0.0346
23:01-24:00, Wed., 22 Jul. 0.0374 0.0319 0.0345
22:01-23:00, Wed., 22 Jul. 0.0376 0.0329 0.0348
21:01-22:00, Wed., 22 Jul. 0.0379 0.0318 0.0347
20:01-21:00, Wed., 22 Jul. 0.0374 0.0325 0.0350