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
16:01-17:00, Mon., 18 Aug. 0.0409 0.0331 0.0366
15:01-16:00, Mon., 18 Aug. 0.0372 0.0318 0.0343
14:01-15:00, Mon., 18 Aug. 0.0365 0.0329 0.0348
13:01-14:00, Mon., 18 Aug. 0.0381 0.0326 0.0350
12:01-13:00, Mon., 18 Aug. 0.0372 0.0332 0.0351
11:01-12:00, Mon., 18 Aug. 0.0377 0.0320 0.0349
10:01-11:00, Mon., 18 Aug. 0.0374 0.0318 0.0347
09:01-10:00, Mon., 18 Aug. 0.0377 0.0325 0.0354
08:01-09:00, Mon., 18 Aug. 0.0379 0.0331 0.0359
07:01-08:00, Mon., 18 Aug. 0.0382 0.0343 0.0360
06:01-07:00, Mon., 18 Aug. 0.0382 0.0332 0.0358
05:01-06:00, Mon., 18 Aug. 0.0385 0.0338 0.0359
04:01-05:00, Mon., 18 Aug. 0.0388 0.0339 0.0356
03:01-04:00, Mon., 18 Aug. 0.0396 0.0337 0.0356
02:01-03:00, Mon., 18 Aug. 0.0386 0.0325 0.0353
01:01-02:00, Mon., 18 Aug. 0.0372 0.0339 0.0355
00:01-01:00, Mon., 18 Aug. 0.0370 0.0326 0.0348
23:01-24:00, Sun., 17 Aug. 0.0372 0.0323 0.0348
22:01-23:00, Sun., 17 Aug. 0.0368 0.0318 0.0345
21:01-22:00, Sun., 17 Aug. 0.0367 0.0317 0.0346
20:01-21:00, Sun., 17 Aug. 0.0368 0.0320 0.0345
19:01-20:00, Sun., 17 Aug. 0.0364 0.0311 0.0344
18:01-19:00, Sun., 17 Aug. 0.0368 0.0322 0.0343
17:01-18:00, Sun., 17 Aug. 0.0370 0.0319 0.0346
16:01-17:00, Sun., 17 Aug. 0.0363 0.0315 0.0342
15:01-16:00, Sun., 17 Aug. 0.0372 0.0323 0.0345
14:01-15:00, Sun., 17 Aug. 0.0365 0.0323 0.0346
13:01-14:00, Sun., 17 Aug. 0.0367 0.0325 0.0345
12:01-13:00, Sun., 17 Aug. 0.0365 0.0327 0.0345
11:01-12:00, Sun., 17 Aug. 0.0365 0.0332 0.0346
10:01-11:00, Sun., 17 Aug. 0.0371 0.0317 0.0350
09:01-10:00, Sun., 17 Aug. 0.0381 0.0332 0.0352
08:01-09:00, Sun., 17 Aug. 0.0388 0.0328 0.0359
07:01-08:00, Sun., 17 Aug. 0.0391 0.0325 0.0362
06:01-07:00, Sun., 17 Aug. 0.0399 0.0339 0.0364
05:01-06:00, Sun., 17 Aug. 0.0390 0.0339 0.0359
04:01-05:00, Sun., 17 Aug. 0.0385 0.0338 0.0354
03:01-04:00, Sun., 17 Aug. 0.0377 0.0333 0.0351
02:01-03:00, Sun., 17 Aug. 0.0374 0.0318 0.0348
01:01-02:00, Sun., 17 Aug. 0.0372 0.0321 0.0346
00:01-01:00, Sun., 17 Aug. 0.0373 0.0317 0.0341
23:01-24:00, Sat., 16 Aug. 0.0367 0.0318 0.0340
22:01-23:00, Sat., 16 Aug. 0.0363 0.0327 0.0344
21:01-22:00, Sat., 16 Aug. 0.0365 0.0304 0.0338
20:01-21:00, Sat., 16 Aug. 0.0371 0.0303 0.0343
19:01-20:00, Sat., 16 Aug. 0.0373 0.0318 0.0344
18:01-19:00, Sat., 16 Aug. 0.0377 0.0315 0.0342
17:01-18:00, Sat., 16 Aug. 0.0368 0.0315 0.0338
16:01-17:00, Sat., 16 Aug. 0.0365 0.0315 0.0341
15:01-16:00, Sat., 16 Aug. 0.0378 0.0315 0.0339
14:01-15:00, Sat., 16 Aug. 0.0360 0.0315 0.0335
13:01-14:00, Sat., 16 Aug. 0.0362 0.0315 0.0338
12:01-13:00, Sat., 16 Aug. 0.0361 0.0315 0.0338
11:01-12:00, Sat., 16 Aug. 0.0375 0.0323 0.0343
10:01-11:00, Sat., 16 Aug. 0.0374 0.0322 0.0347
09:01-10:00, Sat., 16 Aug. 0.0370 0.0325 0.0345
08:01-09:00, Sat., 16 Aug. 0.0380 0.0329 0.0353
07:01-08:00, Sat., 16 Aug. 0.0379 0.0327 0.0356
06:01-07:00, Sat., 16 Aug. 0.0376 0.0332 0.0355
05:01-06:00, Sat., 16 Aug. 0.0375 0.0332 0.0351
04:01-05:00, Sat., 16 Aug. 0.0371 0.0329 0.0350
03:01-04:00, Sat., 16 Aug. 0.0378 0.0329 0.0350
02:01-03:00, Sat., 16 Aug. 0.0381 0.0322 0.0349
01:01-02:00, Sat., 16 Aug. 0.0370 0.0325 0.0344
00:01-01:00, Sat., 16 Aug. 0.0360 0.0312 0.0341
23:01-24:00, Fri., 15 Aug. 0.0363 0.0317 0.0342
22:01-23:00, Fri., 15 Aug. 0.0365 0.0322 0.0342
21:01-22:00, Fri., 15 Aug. 0.0358 0.0319 0.0339
20:01-21:00, Fri., 15 Aug. 0.0377 0.0324 0.0341
19:01-20:00, Fri., 15 Aug. 0.0360 0.0316 0.0341
18:01-19:00, Fri., 15 Aug. 0.0362 0.0317 0.0340
17:01-18:00, Fri., 15 Aug. 0.0363 0.0320 0.0342
16:01-17:00, Fri., 15 Aug. 0.0375 0.0315 0.0339
15:01-16:00, Fri., 15 Aug. 0.0364 0.0318 0.0342
14:01-15:00, Fri., 15 Aug. 0.0367 0.0314 0.0343
13:01-14:00, Fri., 15 Aug. 0.0376 0.0317 0.0343
12:01-13:00, Fri., 15 Aug. 0.0366 0.0325 0.0345
11:01-12:00, Fri., 15 Aug. 0.0372 0.0318 0.0342
10:01-11:00, Fri., 15 Aug. 0.0359 0.0323 0.0343
09:01-10:00, Fri., 15 Aug. 0.0373 0.0332 0.0352
08:01-09:00, Fri., 15 Aug. 0.0382 0.0336 0.0357
07:01-08:00, Fri., 15 Aug. 0.0370 0.0330 0.0354
06:01-07:00, Fri., 15 Aug. 0.0364 0.0322 0.0345
05:01-06:00, Fri., 15 Aug. 0.0370 0.0315 0.0339
04:01-05:00, Fri., 15 Aug. 0.0366 0.0322 0.0340
03:01-04:00, Fri., 15 Aug. 0.0372 0.0316 0.0338
02:01-03:00, Fri., 15 Aug. 0.0361 0.0312 0.0335
01:01-02:00, Fri., 15 Aug. 0.0367 0.0320 0.0340
00:01-01:00, Fri., 15 Aug. 0.0368 0.0320 0.0340
23:01-24:00, Thu., 14 Aug. 0.0359 0.0317 0.0338
22:01-23:00, Thu., 14 Aug. 0.0363 0.0297 0.0338
21:01-22:00, Thu., 14 Aug. 0.0368 0.0320 0.0340
20:01-21:00, Thu., 14 Aug. 0.0357 0.0316 0.0339
19:01-20:00, Thu., 14 Aug. 0.0364 0.0323 0.0339
18:01-19:00, Thu., 14 Aug. 0.0368 0.0311 0.0340
17:01-18:00, Thu., 14 Aug. 0.0354 0.0322 0.0339
16:01-17:00, Thu., 14 Aug. 0.0363 0.0317 0.0338
15:01-16:00, Thu., 14 Aug. 0.0366 0.0311 0.0339
14:01-15:00, Thu., 14 Aug. 0.0361 0.0318 0.0339
13:01-14:00, Thu., 14 Aug. 0.0363 0.0313 0.0336
12:01-13:00, Thu., 14 Aug. 0.0363 0.0314 0.0336
11:01-12:00, Thu., 14 Aug. 0.0358 0.0315 0.0338
10:01-11:00, Thu., 14 Aug. 0.0364 0.0308 0.0339
09:01-10:00, Thu., 14 Aug. 0.0367 0.0316 0.0341
08:01-09:00, Thu., 14 Aug. 0.0361 0.0332 0.0345
07:01-08:00, Thu., 14 Aug. 0.0366 0.0316 0.0340
06:01-07:00, Thu., 14 Aug. 0.0363 0.0319 0.0341
05:01-06:00, Thu., 14 Aug. 0.0364 0.0313 0.0343
04:01-05:00, Thu., 14 Aug. 0.0367 0.0322 0.0341
03:01-04:00, Thu., 14 Aug. 0.0366 0.0315 0.0343
02:01-03:00, Thu., 14 Aug. 0.0377 0.0325 0.0349
01:01-02:00, Thu., 14 Aug. 0.0370 0.0327 0.0345
00:01-01:00, Thu., 14 Aug. 0.0368 0.0316 0.0345
23:01-24:00, Wed., 13 Aug. 0.0367 0.0322 0.0346
22:01-23:00, Wed., 13 Aug. 0.0363 0.0317 0.0341
21:01-22:00, Wed., 13 Aug. 0.0367 0.0327 0.0346
20:01-21:00, Wed., 13 Aug. 0.0363 0.0317 0.0343
19:01-20:00, Wed., 13 Aug. 0.0365 0.0322 0.0341
18:01-19:00, Wed., 13 Aug. 0.0369 0.0318 0.0342
17:01-18:00, Wed., 13 Aug. 0.0373 0.0326 0.0344
16:01-17:00, Wed., 13 Aug. 0.0367 0.0322 0.0341
15:01-16:00, Wed., 13 Aug. 0.0372 0.0311 0.0343
14:01-15:00, Wed., 13 Aug. 0.0370 0.0319 0.0344
13:01-14:00, Wed., 13 Aug. 0.0371 0.0322 0.0349
12:01-13:00, Wed., 13 Aug. 0.0384 0.0319 0.0351
11:01-12:00, Wed., 13 Aug. 0.0366 0.0317 0.0339
10:01-11:00, Wed., 13 Aug. 0.0363 0.0304 0.0341
09:01-10:00, Wed., 13 Aug. 0.0371 0.0318 0.0344
08:01-09:00, Wed., 13 Aug. 0.0369 0.0319 0.0346
07:01-08:00, Wed., 13 Aug. 0.0373 0.0318 0.0346
06:01-07:00, Wed., 13 Aug. 0.0366 0.0309 0.0345
05:01-06:00, Wed., 13 Aug. 0.0365 0.0323 0.0344
04:01-05:00, Wed., 13 Aug. 0.0365 0.0316 0.0343
03:01-04:00, Wed., 13 Aug. 0.0366 0.0320 0.0344
02:01-03:00, Wed., 13 Aug. 0.0364 0.0322 0.0346
01:01-02:00, Wed., 13 Aug. 0.0374 0.0330 0.0347
00:01-01:00, Wed., 13 Aug. 0.0363 0.0325 0.0347
23:01-24:00, Tue., 12 Aug. 0.0374 0.0318 0.0347
22:01-23:00, Tue., 12 Aug. 0.0377 0.0336 0.0356
21:01-22:00, Tue., 12 Aug. 0.0406 0.0349 0.0375
20:01-21:00, Tue., 12 Aug. 0.0480 0.0370 0.0424
19:01-20:00, Tue., 12 Aug. 0.0523 0.0459 0.0490
18:01-19:00, Tue., 12 Aug. 0.0543 0.0478 0.0507
17:01-18:00, Tue., 12 Aug. 0.0490 0.0396 0.0439
16:01-17:00, Tue., 12 Aug. 0.0426 0.0362 0.0385
15:01-16:00, Tue., 12 Aug. 0.0414 0.0349 0.0382
14:01-15:00, Tue., 12 Aug. 0.0406 0.0348 0.0376
13:01-14:00, Tue., 12 Aug. 0.0420 0.0357 0.0397
12:01-13:00, Tue., 12 Aug. 0.0436 0.0360 0.0394
11:01-12:00, Tue., 12 Aug. 0.0407 0.0349 0.0376
10:01-11:00, Tue., 12 Aug. 0.0381 0.0335 0.0354
09:01-10:00, Tue., 12 Aug. 0.0377 0.0322 0.0344
08:01-09:00, Tue., 12 Aug. 0.0363 0.0315 0.0343
07:01-08:00, Tue., 12 Aug. 0.0362 0.0317 0.0338
06:01-07:00, Tue., 12 Aug. 0.0360 0.0309 0.0338
05:01-06:00, Tue., 12 Aug. 0.0360 0.0319 0.0338
04:01-05:00, Tue., 12 Aug. 0.0360 0.0318 0.0339
03:01-04:00, Tue., 12 Aug. 0.0370 0.0317 0.0341
02:01-03:00, Tue., 12 Aug. 0.0368 0.0317 0.0344
01:01-02:00, Tue., 12 Aug. 0.0376 0.0329 0.0351
00:01-01:00, Tue., 12 Aug. 0.0372 0.0314 0.0341
23:01-24:00, Mon., 11 Aug. 0.0356 0.0318 0.0337
22:01-23:00, Mon., 11 Aug. 0.0361 0.0318 0.0337
21:01-22:00, Mon., 11 Aug. 0.0358 0.0318 0.0339
20:01-21:00, Mon., 11 Aug. 0.0363 0.0315 0.0340
19:01-20:00, Mon., 11 Aug. 0.0373 0.0318 0.0342
18:01-19:00, Mon., 11 Aug. 0.0405 0.0336 0.0366
17:01-18:00, Mon., 11 Aug. 0.0450 0.0373 0.0414
16:01-17:00, Mon., 11 Aug. 0.0473 0.0358 0.0416
15:01-16:00, Mon., 11 Aug. 0.0380 0.0315 0.0345
14:01-15:00, Mon., 11 Aug. 0.0382 0.0323 0.0352
13:01-14:00, Mon., 11 Aug. 0.0407 0.0343 0.0371
12:01-13:00, Mon., 11 Aug. 0.0377 0.0314 0.0344
11:01-12:00, Mon., 11 Aug. 0.0373 0.0324 0.0346
10:01-11:00, Mon., 11 Aug. 0.0398 0.0327 0.0364
09:01-10:00, Mon., 11 Aug. 0.0440 0.0378 0.0407
08:01-09:00, Mon., 11 Aug. 0.0426 0.0323 0.0361
07:01-08:00, Mon., 11 Aug. 0.0358 0.0308 0.0334
06:01-07:00, Mon., 11 Aug. 0.0352 0.0312 0.0332
05:01-06:00, Mon., 11 Aug. 0.0353 0.0308 0.0333
04:01-05:00, Mon., 11 Aug. 0.0366 0.0311 0.0334
03:01-04:00, Mon., 11 Aug. 0.0352 0.0313 0.0334
02:01-03:00, Mon., 11 Aug. 0.0359 0.0316 0.0341
01:01-02:00, Mon., 11 Aug. 0.0385 0.0322 0.0353
00:01-01:00, Mon., 11 Aug. 0.0381 0.0333 0.0354
23:01-24:00, Sun., 10 Aug. 0.0384 0.0339 0.0362
22:01-23:00, Sun., 10 Aug. 0.0377 0.0326 0.0354
21:01-22:00, Sun., 10 Aug. 0.0390 0.0336 0.0363
20:01-21:00, Sun., 10 Aug. 0.0383 0.0309 0.0346
19:01-20:00, Sun., 10 Aug. 0.0362 0.0319 0.0341
18:01-19:00, Sun., 10 Aug. 0.0370 0.0322 0.0342
17:01-18:00, Sun., 10 Aug. 0.0400 0.0331 0.0358
16:01-17:00, Sun., 10 Aug. 0.0428 0.0367 0.0392
15:01-16:00, Sun., 10 Aug. 0.0443 0.0311 0.0357
14:01-15:00, Sun., 10 Aug. 0.0373 0.0322 0.0343
13:01-14:00, Sun., 10 Aug. 0.0374 0.0315 0.0338
12:01-13:00, Sun., 10 Aug. 0.0362 0.0314 0.0341
11:01-12:00, Sun., 10 Aug. 0.0373 0.0326 0.0350
10:01-11:00, Sun., 10 Aug. 0.0388 0.0339 0.0360
09:01-10:00, Sun., 10 Aug. 0.0418 0.0352 0.0384
08:01-09:00, Sun., 10 Aug. 0.0457 0.0391 0.0431
07:01-08:00, Sun., 10 Aug. 0.0436 0.0345 0.0388
06:01-07:00, Sun., 10 Aug. 0.0390 0.0347 0.0367
05:01-06:00, Sun., 10 Aug. 0.0396 0.0343 0.0366
04:01-05:00, Sun., 10 Aug. 0.0393 0.0346 0.0365
03:01-04:00, Sun., 10 Aug. 0.0406 0.0339 0.0374
02:01-03:00, Sun., 10 Aug. 0.0436 0.0363 0.0395
01:01-02:00, Sun., 10 Aug. 0.0394 0.0335 0.0363
00:01-01:00, Sun., 10 Aug. 0.0388 0.0320 0.0355
23:01-24:00, Sat., 09 Aug. 0.0374 0.0324 0.0347
22:01-23:00, Sat., 09 Aug. 0.0374 0.0325 0.0350
21:01-22:00, Sat., 09 Aug. 0.0370 0.0328 0.0347
20:01-21:00, Sat., 09 Aug. 0.0365 0.0322 0.0347
19:01-20:00, Sat., 09 Aug. 0.0381 0.0328 0.0351
18:01-19:00, Sat., 09 Aug. 0.0377 0.0313 0.0348
17:01-18:00, Sat., 09 Aug. 0.0384 0.0327 0.0348
16:01-17:00, Sat., 09 Aug. 0.0374 0.0320 0.0347
15:01-16:00, Sat., 09 Aug. 0.0376 0.0324 0.0348
14:01-15:00, Sat., 09 Aug. 0.0368 0.0317 0.0341
13:01-14:00, Sat., 09 Aug. 0.0365 0.0322 0.0342
12:01-13:00, Sat., 09 Aug. 0.0366 0.0321 0.0342
11:01-12:00, Sat., 09 Aug. 0.0372 0.0321 0.0345
10:01-11:00, Sat., 09 Aug. 0.0371 0.0325 0.0348
09:01-10:00, Sat., 09 Aug. 0.0381 0.0331 0.0352
08:01-09:00, Sat., 09 Aug. 0.0381 0.0330 0.0352
07:01-08:00, Sat., 09 Aug. 0.0387 0.0334 0.0359
06:01-07:00, Sat., 09 Aug. 0.0387 0.0332 0.0359
05:01-06:00, Sat., 09 Aug. 0.0377 0.0335 0.0356
04:01-05:00, Sat., 09 Aug. 0.0370 0.0327 0.0354
03:01-04:00, Sat., 09 Aug. 0.0381 0.0332 0.0354
02:01-03:00, Sat., 09 Aug. 0.0378 0.0322 0.0351
01:01-02:00, Sat., 09 Aug. 0.0377 0.0326 0.0350
00:01-01:00, Sat., 09 Aug. 0.0367 0.0328 0.0349
23:01-24:00, Fri., 08 Aug. 0.0370 0.0321 0.0349
22:01-23:00, Fri., 08 Aug. 0.0371 0.0327 0.0350
21:01-22:00, Fri., 08 Aug. 0.0384 0.0318 0.0351
20:01-21:00, Fri., 08 Aug. 0.0374 0.0327 0.0348
19:01-20:00, Fri., 08 Aug. 0.0384 0.0326 0.0350
18:01-19:00, Fri., 08 Aug. 0.0380 0.0331 0.0352
17:01-18:00, Fri., 08 Aug. 0.0374 0.0338 0.0356