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
07:01-08:00, Thu., 23 May. 0.0362 0.0321 0.0341
06:01-07:00, Thu., 23 May. 0.0366 0.0316 0.0340
05:01-06:00, Thu., 23 May. 0.0376 0.0319 0.0344
04:01-05:00, Thu., 23 May. 0.0374 0.0318 0.0347
03:01-04:00, Thu., 23 May. 0.0377 0.0322 0.0346
02:01-03:00, Thu., 23 May. 0.0364 0.0320 0.0343
01:01-02:00, Thu., 23 May. 0.0373 0.0315 0.0339
00:01-01:00, Thu., 23 May. 0.0360 0.0313 0.0333
23:01-24:00, Wed., 22 May. 0.0360 0.0309 0.0331
22:01-23:00, Wed., 22 May. 0.0353 0.0309 0.0333
21:01-22:00, Wed., 22 May. 0.0354 0.0312 0.0330
20:01-21:00, Wed., 22 May. 0.0359 0.0300 0.0331
19:01-20:00, Wed., 22 May. 0.0365 0.0307 0.0327
18:01-19:00, Wed., 22 May. 0.0346 0.0303 0.0327
17:01-18:00, Wed., 22 May. 0.0355 0.0313 0.0329
16:01-17:00, Wed., 22 May. 0.0359 0.0315 0.0332
15:01-16:00, Wed., 22 May. 0.0361 0.0304 0.0334
14:01-15:00, Wed., 22 May. 0.0353 0.0303 0.0331
13:01-14:00, Wed., 22 May. 0.0352 0.0313 0.0333
12:01-13:00, Wed., 22 May. 0.0363 0.0316 0.0332
11:01-12:00, Wed., 22 May. 0.0353 0.0307 0.0332
10:01-11:00, Wed., 22 May. 0.0363 0.0301 0.0331
09:01-10:00, Wed., 22 May. 0.0345 0.0308 0.0330
08:01-09:00, Wed., 22 May. 0.0352 0.0311 0.0331
07:01-08:00, Wed., 22 May. 0.0356 0.0297 0.0333
06:01-07:00, Wed., 22 May. 0.0353 0.0303 0.0329
05:01-06:00, Wed., 22 May. 0.0363 0.0304 0.0334
04:01-05:00, Wed., 22 May. 0.0366 0.0315 0.0336
03:01-04:00, Wed., 22 May. 0.0378 0.0317 0.0342
02:01-03:00, Wed., 22 May. 0.0388 0.0331 0.0363
01:01-02:00, Wed., 22 May. 0.0419 0.0347 0.0388
00:01-01:00, Wed., 22 May. 0.0455 0.0354 0.0402
23:01-24:00, Tue., 21 May. 0.0464 0.0388 0.0419
22:01-23:00, Tue., 21 May. 0.0462 0.0388 0.0430
21:01-22:00, Tue., 21 May. 0.0440 0.0305 0.0361
20:01-21:00, Tue., 21 May. 0.0361 0.0308 0.0333
19:01-20:00, Tue., 21 May. 0.0356 0.0307 0.0331
18:01-19:00, Tue., 21 May. 0.0359 0.0308 0.0329
17:01-18:00, Tue., 21 May. 0.0360 0.0315 0.0333
16:01-17:00, Tue., 21 May. 0.0359 0.0310 0.0337
15:01-16:00, Tue., 21 May. 0.0354 0.0304 0.0338
14:01-15:00, Tue., 21 May. 0.0368 0.0310 0.0339
13:01-14:00, Tue., 21 May. 0.0373 0.0317 0.0341
12:01-13:00, Tue., 21 May. 0.0362 0.0321 0.0341
11:01-12:00, Tue., 21 May. 0.0370 0.0315 0.0344
10:01-11:00, Tue., 21 May. 0.0361 0.0326 0.0343
09:01-10:00, Tue., 21 May. 0.0370 0.0318 0.0343
08:01-09:00, Tue., 21 May. 0.0368 0.0313 0.0345
07:01-08:00, Tue., 21 May. 0.0378 0.0328 0.0351
06:01-07:00, Tue., 21 May. 0.0377 0.0327 0.0357
05:01-06:00, Tue., 21 May. 0.0384 0.0332 0.0356
04:01-05:00, Tue., 21 May. 0.0375 0.0332 0.0353
03:01-04:00, Tue., 21 May. 0.0379 0.0322 0.0353
02:01-03:00, Tue., 21 May. 0.0381 0.0325 0.0354
01:01-02:00, Tue., 21 May. 0.0374 0.0327 0.0351
00:01-01:00, Tue., 21 May. 0.0374 0.0328 0.0351
23:01-24:00, Mon., 20 May. 0.0370 0.0322 0.0348
22:01-23:00, Mon., 20 May. 0.0377 0.0324 0.0352
21:01-22:00, Mon., 20 May. 0.0369 0.0319 0.0344
20:01-21:00, Mon., 20 May. 0.0370 0.0316 0.0337
19:01-20:00, Mon., 20 May. 0.0360 0.0301 0.0337
18:01-19:00, Mon., 20 May. 0.0359 0.0304 0.0333
17:01-18:00, Mon., 20 May. 0.0360 0.0308 0.0333
16:01-17:00, Mon., 20 May. 0.0349 0.0308 0.0331
15:01-16:00, Mon., 20 May. 0.0359 0.0313 0.0330
14:01-15:00, Mon., 20 May. 0.0363 0.0308 0.0333
13:01-14:00, Mon., 20 May. 0.0355 0.0311 0.0331
12:01-13:00, Mon., 20 May. 0.0360 0.0310 0.0332
11:01-12:00, Mon., 20 May. 0.0359 0.0311 0.0333
10:01-11:00, Mon., 20 May. 0.0365 0.0311 0.0337
09:01-10:00, Mon., 20 May. 0.0374 0.0318 0.0349
08:01-09:00, Mon., 20 May. 0.0375 0.0332 0.0355
07:01-08:00, Mon., 20 May. 0.0388 0.0339 0.0368
06:01-07:00, Mon., 20 May. 0.0402 0.0353 0.0376
05:01-06:00, Mon., 20 May. 0.0398 0.0356 0.0374
04:01-05:00, Mon., 20 May. 0.0394 0.0343 0.0371
03:01-04:00, Mon., 20 May. 0.0391 0.0336 0.0361
02:01-03:00, Mon., 20 May. 0.0374 0.0328 0.0352
01:01-02:00, Mon., 20 May. 0.0374 0.0315 0.0349
00:01-01:00, Mon., 20 May. 0.0369 0.0325 0.0345
23:01-24:00, Sun., 19 May. 0.0384 0.0318 0.0343
22:01-23:00, Sun., 19 May. 0.0366 0.0325 0.0340
21:01-22:00, Sun., 19 May. 0.0365 0.0316 0.0338
20:01-21:00, Sun., 19 May. 0.0360 0.0318 0.0339
19:01-20:00, Sun., 19 May. 0.0364 0.0316 0.0339
18:01-19:00, Sun., 19 May. 0.0360 0.0321 0.0341
17:01-18:00, Sun., 19 May. 0.0372 0.0318 0.0341
16:01-17:00, Sun., 19 May. 0.0365 0.0322 0.0341
15:01-16:00, Sun., 19 May. 0.0376 0.0314 0.0341
14:01-15:00, Sun., 19 May. 0.0364 0.0329 0.0345
13:01-14:00, Sun., 19 May. 0.0365 0.0319 0.0342
12:01-13:00, Sun., 19 May. 0.0363 0.0318 0.0342
11:01-12:00, Sun., 19 May. 0.0362 0.0315 0.0340
10:01-11:00, Sun., 19 May. 0.0372 0.0315 0.0342
09:01-10:00, Sun., 19 May. 0.0375 0.0331 0.0350
08:01-09:00, Sun., 19 May. 0.0377 0.0325 0.0351
07:01-08:00, Sun., 19 May. 0.0378 0.0323 0.0350
06:01-07:00, Sun., 19 May. 0.0380 0.0334 0.0348
05:01-06:00, Sun., 19 May. 0.0377 0.0329 0.0350
04:01-05:00, Sun., 19 May. 0.0366 0.0322 0.0347
03:01-04:00, Sun., 19 May. 0.0363 0.0328 0.0345
02:01-03:00, Sun., 19 May. 0.0365 0.0318 0.0346
01:01-02:00, Sun., 19 May. 0.0371 0.0317 0.0343
00:01-01:00, Sun., 19 May. 0.0364 0.0311 0.0337
23:01-24:00, Sat., 18 May. 0.0361 0.0314 0.0336
22:01-23:00, Sat., 18 May. 0.0356 0.0306 0.0333
21:01-22:00, Sat., 18 May. 0.0359 0.0309 0.0333
20:01-21:00, Sat., 18 May. 0.0363 0.0309 0.0335
19:01-20:00, Sat., 18 May. 0.0357 0.0304 0.0332
18:01-19:00, Sat., 18 May. 0.0360 0.0307 0.0334
17:01-18:00, Sat., 18 May. 0.0356 0.0319 0.0336
16:01-17:00, Sat., 18 May. 0.0361 0.0314 0.0337
15:01-16:00, Sat., 18 May. 0.0354 0.0304 0.0334
14:01-15:00, Sat., 18 May. 0.0356 0.0308 0.0335
13:01-14:00, Sat., 18 May. 0.0361 0.0306 0.0337
12:01-13:00, Sat., 18 May. 0.0365 0.0315 0.0341
11:01-12:00, Sat., 18 May. 0.0354 0.0306 0.0339
10:01-11:00, Sat., 18 May. 0.0376 0.0315 0.0337
09:01-10:00, Sat., 18 May. 0.0370 0.0318 0.0343
08:01-09:00, Sat., 18 May. 0.0373 0.0320 0.0345
07:01-08:00, Sat., 18 May. 0.0367 0.0325 0.0346
06:01-07:00, Sat., 18 May. 0.0370 0.0317 0.0347
05:01-06:00, Sat., 18 May. 0.0370 0.0322 0.0345
04:01-05:00, Sat., 18 May. 0.0376 0.0329 0.0345
03:01-04:00, Sat., 18 May. 0.0362 0.0322 0.0339
02:01-03:00, Sat., 18 May. 0.0372 0.0317 0.0343
01:01-02:00, Sat., 18 May. 0.0367 0.0327 0.0344
00:01-01:00, Sat., 18 May. 0.0352 0.0314 0.0338
23:01-24:00, Fri., 17 May. 0.0372 0.0326 0.0346
22:01-23:00, Fri., 17 May. 0.0364 0.0308 0.0339
21:01-22:00, Fri., 17 May. 0.0363 0.0313 0.0337
20:01-21:00, Fri., 17 May. 0.0352 0.0311 0.0332
19:01-20:00, Fri., 17 May. 0.0371 0.0309 0.0333
18:01-19:00, Fri., 17 May. 0.0365 0.0304 0.0333
17:01-18:00, Fri., 17 May. 0.0356 0.0310 0.0336
16:01-17:00, Fri., 17 May. 0.0374 0.0312 0.0334
15:01-16:00, Fri., 17 May. 0.0363 0.0311 0.0336
14:01-15:00, Fri., 17 May. 0.0357 0.0312 0.0335
13:01-14:00, Fri., 17 May. 0.0365 0.0315 0.0338
12:01-13:00, Fri., 17 May. 0.0354 0.0322 0.0336
11:01-12:00, Fri., 17 May. 0.0364 0.0314 0.0335
10:01-11:00, Fri., 17 May. 0.0356 0.0316 0.0333
09:01-10:00, Fri., 17 May. 0.0367 0.0305 0.0336
08:01-09:00, Fri., 17 May. 0.0360 0.0311 0.0337
07:01-08:00, Fri., 17 May. 0.0356 0.0319 0.0338
06:01-07:00, Fri., 17 May. 0.0356 0.0312 0.0338
05:01-06:00, Fri., 17 May. 0.0361 0.0309 0.0334
04:01-05:00, Fri., 17 May. 0.0359 0.0315 0.0334
03:01-04:00, Fri., 17 May. 0.0356 0.0311 0.0336
02:01-03:00, Fri., 17 May. 0.0366 0.0316 0.0335
01:01-02:00, Fri., 17 May. 0.0356 0.0313 0.0334
00:01-01:00, Fri., 17 May. 0.0362 0.0312 0.0333
23:01-24:00, Thu., 16 May. 0.0356 0.0313 0.0335
22:01-23:00, Thu., 16 May. 0.0367 0.0308 0.0334
21:01-22:00, Thu., 16 May. 0.0358 0.0316 0.0337
20:01-21:00, Thu., 16 May. 0.0352 0.0315 0.0338
19:01-20:00, Thu., 16 May. 0.0359 0.0314 0.0332
18:01-19:00, Thu., 16 May. 0.0355 0.0308 0.0330
17:01-18:00, Thu., 16 May. 0.0356 0.0302 0.0331
16:01-17:00, Thu., 16 May. 0.0358 0.0311 0.0331
15:01-16:00, Thu., 16 May. 0.0363 0.0305 0.0336
14:01-15:00, Thu., 16 May. 0.0350 0.0308 0.0332
13:01-14:00, Thu., 16 May. 0.0359 0.0314 0.0332
12:01-13:00, Thu., 16 May. 0.0367 0.0309 0.0336
11:01-12:00, Thu., 16 May. 0.0355 0.0308 0.0331
10:01-11:00, Thu., 16 May. 0.0360 0.0308 0.0336
09:01-10:00, Thu., 16 May. 0.0360 0.0318 0.0339
08:01-09:00, Thu., 16 May. 0.0380 0.0314 0.0349
07:01-08:00, Thu., 16 May. 0.0382 0.0326 0.0351
06:01-07:00, Thu., 16 May. 0.0395 0.0333 0.0373
05:01-06:00, Thu., 16 May. 0.0401 0.0350 0.0371
04:01-05:00, Thu., 16 May. 0.0392 0.0347 0.0366
03:01-04:00, Thu., 16 May. 0.0409 0.0344 0.0377
02:01-03:00, Thu., 16 May. 0.0442 0.0381 0.0415
01:01-02:00, Thu., 16 May. 0.0489 0.0411 0.0440
00:01-01:00, Thu., 16 May. 0.0441 0.0372 0.0418
23:01-24:00, Wed., 15 May. 0.0435 0.0373 0.0401
22:01-23:00, Wed., 15 May. 0.0457 0.0372 0.0415
21:01-22:00, Wed., 15 May. 0.0439 0.0382 0.0411
20:01-21:00, Wed., 15 May. 0.0409 0.0329 0.0368
19:01-20:00, Wed., 15 May. 0.0357 0.0311 0.0334
18:01-19:00, Wed., 15 May. 0.0357 0.0308 0.0328
17:01-18:00, Wed., 15 May. 0.0350 0.0308 0.0330
16:01-17:00, Wed., 15 May. 0.0350 0.0305 0.0332
15:01-16:00, Wed., 15 May. 0.0350 0.0310 0.0330
14:01-15:00, Wed., 15 May. 0.0353 0.0302 0.0331
13:01-14:00, Wed., 15 May. 0.0350 0.0309 0.0331
12:01-13:00, Wed., 15 May. 0.0356 0.0311 0.0335
11:01-12:00, Wed., 15 May. 0.0356 0.0308 0.0337
10:01-11:00, Wed., 15 May. 0.0362 0.0305 0.0332
09:01-10:00, Wed., 15 May. 0.0355 0.0311 0.0336
08:01-09:00, Wed., 15 May. 0.0364 0.0318 0.0337
07:01-08:00, Wed., 15 May. 0.0368 0.0312 0.0341
06:01-07:00, Wed., 15 May. 0.0361 0.0316 0.0340
05:01-06:00, Wed., 15 May. 0.0362 0.0322 0.0340
04:01-05:00, Wed., 15 May. 0.0367 0.0314 0.0337
03:01-04:00, Wed., 15 May. 0.0363 0.0317 0.0338
02:01-03:00, Wed., 15 May. 0.0374 0.0318 0.0340
01:01-02:00, Wed., 15 May. 0.0363 0.0319 0.0340
00:01-01:00, Wed., 15 May. 0.0363 0.0313 0.0339
23:01-24:00, Tue., 14 May. 0.0360 0.0315 0.0339
22:01-23:00, Tue., 14 May. 0.0360 0.0307 0.0333
21:01-22:00, Tue., 14 May. 0.0355 0.0317 0.0333
20:01-21:00, Tue., 14 May. 0.0351 0.0312 0.0334
19:01-20:00, Tue., 14 May. 0.0359 0.0301 0.0333
18:01-19:00, Tue., 14 May. 0.0349 0.0308 0.0331
17:01-18:00, Tue., 14 May. 0.0363 0.0314 0.0330
16:01-17:00, Tue., 14 May. 0.0349 0.0300 0.0330
15:01-16:00, Tue., 14 May. 0.0363 0.0308 0.0333
14:01-15:00, Tue., 14 May. 0.0356 0.0314 0.0335
13:01-14:00, Tue., 14 May. 0.0357 0.0312 0.0332
12:01-13:00, Tue., 14 May. 0.0354 0.0299 0.0330
11:01-12:00, Tue., 14 May. 0.0362 0.0309 0.0332
10:01-11:00, Tue., 14 May. 0.0356 0.0312 0.0335
09:01-10:00, Tue., 14 May. 0.0357 0.0311 0.0336
08:01-09:00, Tue., 14 May. 0.0361 0.0317 0.0335
07:01-08:00, Tue., 14 May. 0.0356 0.0311 0.0332
06:01-07:00, Tue., 14 May. 0.0349 0.0294 0.0330
05:01-06:00, Tue., 14 May. 0.0353 0.0308 0.0329
04:01-05:00, Tue., 14 May. 0.0359 0.0315 0.0329
03:01-04:00, Tue., 14 May. 0.0351 0.0302 0.0330
02:01-03:00, Tue., 14 May. 0.0354 0.0307 0.0331
01:01-02:00, Tue., 14 May. 0.0358 0.0309 0.0333
00:01-01:00, Tue., 14 May. 0.0360 0.0308 0.0336
23:01-24:00, Mon., 13 May. 0.0375 0.0318 0.0350
22:01-23:00, Mon., 13 May. 0.0380 0.0334 0.0359
21:01-22:00, Mon., 13 May. 0.0394 0.0339 0.0368
20:01-21:00, Mon., 13 May. 0.0468 0.0374 0.0422
19:01-20:00, Mon., 13 May. 0.0485 0.0406 0.0447
18:01-19:00, Mon., 13 May. 0.0464 0.0408 0.0441
17:01-18:00, Mon., 13 May. 0.0534 0.0436 0.0478
16:01-17:00, Mon., 13 May. 0.0568 0.0505 0.0532
15:01-16:00, Mon., 13 May. 0.0603 0.0520 0.0553
14:01-15:00, Mon., 13 May. 0.0607 0.0459 0.0547
13:01-14:00, Mon., 13 May. 0.0484 0.0370 0.0431
12:01-13:00, Mon., 13 May. 0.0397 0.0352 0.0380
11:01-12:00, Mon., 13 May. 0.0398 0.0349 0.0377
10:01-11:00, Mon., 13 May. 0.0385 0.0319 0.0352
09:01-10:00, Mon., 13 May. 0.0379 0.0334 0.0358
08:01-09:00, Mon., 13 May. 0.0423 0.0356 0.0393