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

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
10:01-11:00, Sun., 06 Jul. 0.0397 0.0347 0.0377
09:01-10:00, Sun., 06 Jul. 0.0395 0.0354 0.0377
08:01-09:00, Sun., 06 Jul. 0.0393 0.0356 0.0376
07:01-08:00, Sun., 06 Jul. 0.0404 0.0348 0.0376
06:01-07:00, Sun., 06 Jul. 0.0401 0.0359 0.0377
05:01-06:00, Sun., 06 Jul. 0.0411 0.0357 0.0379
04:01-05:00, Sun., 06 Jul. 0.0397 0.0359 0.0375
03:01-04:00, Sun., 06 Jul. 0.0407 0.0353 0.0376
02:01-03:00, Sun., 06 Jul. 0.0398 0.0356 0.0375
01:01-02:00, Sun., 06 Jul. 0.0410 0.0364 0.0384
00:01-01:00, Sun., 06 Jul. 0.0419 0.0359 0.0390
23:01-24:00, Sat., 05 Jul. 0.0404 0.0355 0.0379
22:01-23:00, Sat., 05 Jul. 0.0411 0.0363 0.0389
21:01-22:00, Sat., 05 Jul. 0.0419 0.0359 0.0393
20:01-21:00, Sat., 05 Jul. 0.0394 0.0357 0.0375
19:01-20:00, Sat., 05 Jul. 0.0396 0.0356 0.0372
18:01-19:00, Sat., 05 Jul. 0.0392 0.0356 0.0374
17:01-18:00, Sat., 05 Jul. 0.0391 0.0355 0.0372
16:01-17:00, Sat., 05 Jul. 0.0405 0.0349 0.0375
15:01-16:00, Sat., 05 Jul. 0.0395 0.0356 0.0375
14:01-15:00, Sat., 05 Jul. 0.0402 0.0355 0.0376
13:01-14:00, Sat., 05 Jul. 0.0397 0.0360 0.0379
12:01-13:00, Sat., 05 Jul. 0.0400 0.0361 0.0380
11:01-12:00, Sat., 05 Jul. 0.0402 0.0360 0.0377
10:01-11:00, Sat., 05 Jul. 0.0399 0.0357 0.0377
09:01-10:00, Sat., 05 Jul. 0.0389 0.0354 0.0374
08:01-09:00, Sat., 05 Jul. 0.0402 0.0357 0.0376
07:01-08:00, Sat., 05 Jul. 0.0396 0.0353 0.0375
06:01-07:00, Sat., 05 Jul. 0.0402 0.0353 0.0372
05:01-06:00, Sat., 05 Jul. 0.0398 0.0355 0.0373
04:01-05:00, Sat., 05 Jul. 0.0395 0.0357 0.0372
03:01-04:00, Sat., 05 Jul. 0.0397 0.0348 0.0372
02:01-03:00, Sat., 05 Jul. 0.0400 0.0356 0.0373
01:01-02:00, Sat., 05 Jul. 0.0388 0.0351 0.0370
00:01-01:00, Sat., 05 Jul. 0.0394 0.0355 0.0372
23:01-24:00, Fri., 04 Jul. 0.0402 0.0360 0.0380
22:01-23:00, Fri., 04 Jul. 0.0415 0.0372 0.0392
21:01-22:00, Fri., 04 Jul. 0.0450 0.0371 0.0416
20:01-21:00, Fri., 04 Jul. 0.0435 0.0354 0.0391
19:01-20:00, Fri., 04 Jul. 0.0405 0.0352 0.0372
18:01-19:00, Fri., 04 Jul. 0.0391 0.0350 0.0374
17:01-18:00, Fri., 04 Jul. 0.0396 0.0354 0.0372
16:01-17:00, Fri., 04 Jul. 0.0388 0.0343 0.0372
15:01-16:00, Fri., 04 Jul. 0.0395 0.0356 0.0374
14:01-15:00, Fri., 04 Jul. 0.0399 0.0352 0.0375
13:01-14:00, Fri., 04 Jul. 0.0395 0.0347 0.0373
12:01-13:00, Fri., 04 Jul. 0.0399 0.0353 0.0370
11:01-12:00, Fri., 04 Jul. 0.0390 0.0351 0.0371
10:01-11:00, Fri., 04 Jul. 0.0398 0.0352 0.0370
09:01-10:00, Fri., 04 Jul. 0.0391 0.0344 0.0369
08:01-09:00, Fri., 04 Jul. 0.0388 0.0350 0.0369
07:01-08:00, Fri., 04 Jul. 0.0391 0.0345 0.0369
06:01-07:00, Fri., 04 Jul. 0.0395 0.0352 0.0370
05:01-06:00, Fri., 04 Jul. 0.0401 0.0350 0.0370
04:01-05:00, Fri., 04 Jul. 0.0394 0.0340 0.0367
03:01-04:00, Fri., 04 Jul. 0.0390 0.0351 0.0368
02:01-03:00, Fri., 04 Jul. 0.0390 0.0348 0.0368
01:01-02:00, Fri., 04 Jul. 0.0386 0.0347 0.0367
00:01-01:00, Fri., 04 Jul. 0.0392 0.0346 0.0367
23:01-24:00, Thu., 03 Jul. 0.0391 0.0356 0.0369
22:01-23:00, Thu., 03 Jul. 0.0390 0.0351 0.0370
21:01-22:00, Thu., 03 Jul. 0.0391 0.0357 0.0370
20:01-21:00, Thu., 03 Jul. 0.0400 0.0349 0.0372
19:01-20:00, Thu., 03 Jul. 0.0398 0.0346 0.0371
18:01-19:00, Thu., 03 Jul. 0.0391 0.0349 0.0373
17:01-18:00, Thu., 03 Jul. 0.0392 0.0347 0.0368
16:01-17:00, Thu., 03 Jul. 0.0395 0.0356 0.0372
15:01-16:00, Thu., 03 Jul. 0.0406 0.0350 0.0374
14:01-15:00, Thu., 03 Jul. 0.0397 0.0356 0.0374
13:01-14:00, Thu., 03 Jul. 0.0391 0.0357 0.0374
12:01-13:00, Thu., 03 Jul. 0.0396 0.0347 0.0373
11:01-12:00, Thu., 03 Jul. 0.0403 0.0350 0.0372
10:01-11:00, Thu., 03 Jul. 0.0391 0.0343 0.0369
09:01-10:00, Thu., 03 Jul. 0.0395 0.0343 0.0370
08:01-09:00, Thu., 03 Jul. 0.0394 0.0348 0.0368
07:01-08:00, Thu., 03 Jul. 0.0396 0.0345 0.0369
06:01-07:00, Thu., 03 Jul. 0.0391 0.0347 0.0368
05:01-06:00, Thu., 03 Jul. 0.0389 0.0345 0.0368
04:01-05:00, Thu., 03 Jul. 0.0391 0.0348 0.0368
03:01-04:00, Thu., 03 Jul. 0.0388 0.0345 0.0368
02:01-03:00, Thu., 03 Jul. 0.0398 0.0347 0.0369
01:01-02:00, Thu., 03 Jul. 0.0383 0.0344 0.0367
00:01-01:00, Thu., 03 Jul. 0.0388 0.0349 0.0370
23:01-24:00, Wed., 02 Jul. 0.0389 0.0350 0.0369
22:01-23:00, Wed., 02 Jul. 0.0385 0.0348 0.0369
21:01-22:00, Wed., 02 Jul. 0.0391 0.0353 0.0371
20:01-21:00, Wed., 02 Jul. 0.0387 0.0353 0.0371
19:01-20:00, Wed., 02 Jul. 0.0391 0.0343 0.0369
18:01-19:00, Wed., 02 Jul. 0.0388 0.0350 0.0371
17:01-18:00, Wed., 02 Jul. 0.0389 0.0345 0.0370
16:01-17:00, Wed., 02 Jul. 0.0393 0.0357 0.0373
15:01-16:00, Wed., 02 Jul. 0.0393 0.0352 0.0373
14:01-15:00, Wed., 02 Jul. 0.0395 0.0353 0.0372
13:01-14:00, Wed., 02 Jul. 0.0402 0.0349 0.0375
12:01-13:00, Wed., 02 Jul. 0.0391 0.0351 0.0371
11:01-12:00, Wed., 02 Jul. 0.0391 0.0350 0.0371
10:01-11:00, Wed., 02 Jul. 0.0400 0.0353 0.0374
09:01-10:00, Wed., 02 Jul. 0.0388 0.0350 0.0370
08:01-09:00, Wed., 02 Jul. 0.0394 0.0349 0.0370
07:01-08:00, Wed., 02 Jul. 0.0398 0.0351 0.0372
06:01-07:00, Wed., 02 Jul. 0.0398 0.0336 0.0366
05:01-06:00, Wed., 02 Jul. 0.0394 0.0349 0.0373
04:01-05:00, Wed., 02 Jul. 0.0392 0.0347 0.0371
03:01-04:00, Wed., 02 Jul. 0.0412 0.0346 0.0372
02:01-03:00, Wed., 02 Jul. 0.0402 0.0349 0.0371
01:01-02:00, Wed., 02 Jul. 0.0388 0.0344 0.0369
00:01-01:00, Wed., 02 Jul. 0.0393 0.0352 0.0368
23:01-24:00, Tue., 01 Jul. 0.0387 0.0344 0.0370
22:01-23:00, Tue., 01 Jul. 0.0399 0.0347 0.0374
21:01-22:00, Tue., 01 Jul. 0.0410 0.0353 0.0385
20:01-21:00, Tue., 01 Jul. 0.0457 0.0389 0.0424
19:01-20:00, Tue., 01 Jul. 0.0440 0.0350 0.0394
18:01-19:00, Tue., 01 Jul. 0.0388 0.0349 0.0369
17:01-18:00, Tue., 01 Jul. 0.0394 0.0347 0.0369
16:01-17:00, Tue., 01 Jul. 0.0399 0.0351 0.0370
15:01-16:00, Tue., 01 Jul. 0.0395 0.0350 0.0373
14:01-15:00, Tue., 01 Jul. 0.0388 0.0347 0.0368
13:01-14:00, Tue., 01 Jul. 0.0385 0.0350 0.0368
12:01-13:00, Tue., 01 Jul. 0.0396 0.0341 0.0372
11:01-12:00, Tue., 01 Jul. 0.0395 0.0349 0.0370
10:01-11:00, Tue., 01 Jul. 0.0390 0.0351 0.0369
09:01-10:00, Tue., 01 Jul. 0.0393 0.0347 0.0370
08:01-09:00, Tue., 01 Jul. 0.0391 0.0352 0.0368
07:01-08:00, Tue., 01 Jul. 0.0384 0.0347 0.0368
06:01-07:00, Tue., 01 Jul. 0.0399 0.0350 0.0367
05:01-06:00, Tue., 01 Jul. 0.0391 0.0347 0.0368
04:01-05:00, Tue., 01 Jul. 0.0392 0.0349 0.0369
03:01-04:00, Tue., 01 Jul. 0.0384 0.0350 0.0369
02:01-03:00, Tue., 01 Jul. 0.0384 0.0345 0.0367
01:01-02:00, Tue., 01 Jul. 0.0385 0.0344 0.0369
00:01-01:00, Tue., 01 Jul. 0.0387 0.0343 0.0369
23:01-24:00, Mon., 30 Jun. 0.0389 0.0353 0.0369
22:01-23:00, Mon., 30 Jun. 0.0394 0.0345 0.0366
21:01-22:00, Mon., 30 Jun. 0.0396 0.0348 0.0369
20:01-21:00, Mon., 30 Jun. 0.0394 0.0345 0.0369
19:01-20:00, Mon., 30 Jun. 0.0390 0.0342 0.0370
18:01-19:00, Mon., 30 Jun. 0.0389 0.0351 0.0371
17:01-18:00, Mon., 30 Jun. 0.0400 0.0351 0.0371
16:01-17:00, Mon., 30 Jun. 0.0395 0.0348 0.0371
15:01-16:00, Mon., 30 Jun. 0.0398 0.0351 0.0373
14:01-15:00, Mon., 30 Jun. 0.0391 0.0339 0.0372
13:01-14:00, Mon., 30 Jun. 0.0388 0.0352 0.0370
12:01-13:00, Mon., 30 Jun. 0.0391 0.0343 0.0370
11:01-12:00, Mon., 30 Jun. 0.0398 0.0350 0.0371
10:01-11:00, Mon., 30 Jun. 0.0391 0.0351 0.0370
09:01-10:00, Mon., 30 Jun. 0.0405 0.0345 0.0369
08:01-09:00, Mon., 30 Jun. 0.0384 0.0350 0.0368
07:01-08:00, Mon., 30 Jun. 0.0384 0.0350 0.0371
06:01-07:00, Mon., 30 Jun. 0.0387 0.0349 0.0369
05:01-06:00, Mon., 30 Jun. 0.0388 0.0342 0.0368
04:01-05:00, Mon., 30 Jun. 0.0392 0.0339 0.0369
03:01-04:00, Mon., 30 Jun. 0.0385 0.0350 0.0369
02:01-03:00, Mon., 30 Jun. 0.0388 0.0347 0.0370
01:01-02:00, Mon., 30 Jun. 0.0399 0.0350 0.0369
00:01-01:00, Mon., 30 Jun. 0.0381 0.0347 0.0366
23:01-24:00, Sun., 29 Jun. 0.0394 0.0350 0.0370
22:01-23:00, Sun., 29 Jun. 0.0391 0.0346 0.0371
21:01-22:00, Sun., 29 Jun. 0.0395 0.0342 0.0370
20:01-21:00, Sun., 29 Jun. 0.0389 0.0347 0.0370
19:01-20:00, Sun., 29 Jun. 0.0391 0.0341 0.0370
18:01-19:00, Sun., 29 Jun. 0.0389 0.0343 0.0369
17:01-18:00, Sun., 29 Jun. 0.0396 0.0350 0.0370
16:01-17:00, Sun., 29 Jun. 0.0399 0.0347 0.0371
15:01-16:00, Sun., 29 Jun. 0.0396 0.0350 0.0372
14:01-15:00, Sun., 29 Jun. 0.0391 0.0358 0.0372
13:01-14:00, Sun., 29 Jun. 0.0393 0.0341 0.0374
12:01-13:00, Sun., 29 Jun. 0.0391 0.0356 0.0373
11:01-12:00, Sun., 29 Jun. 0.0392 0.0347 0.0371
10:01-11:00, Sun., 29 Jun. 0.0386 0.0340 0.0369
09:01-10:00, Sun., 29 Jun. 0.0394 0.0336 0.0369
08:01-09:00, Sun., 29 Jun. 0.0390 0.0343 0.0371
07:01-08:00, Sun., 29 Jun. 0.0389 0.0350 0.0370
06:01-07:00, Sun., 29 Jun. 0.0391 0.0343 0.0368
05:01-06:00, Sun., 29 Jun. 0.0393 0.0350 0.0370
04:01-05:00, Sun., 29 Jun. 0.0391 0.0345 0.0369
03:01-04:00, Sun., 29 Jun. 0.0386 0.0347 0.0369
02:01-03:00, Sun., 29 Jun. 0.0394 0.0347 0.0369
01:01-02:00, Sun., 29 Jun. 0.0385 0.0354 0.0370
00:01-01:00, Sun., 29 Jun. 0.0398 0.0347 0.0371
23:01-24:00, Sat., 28 Jun. 0.0392 0.0347 0.0370
22:01-23:00, Sat., 28 Jun. 0.0395 0.0347 0.0371
21:01-22:00, Sat., 28 Jun. 0.0394 0.0352 0.0374
20:01-21:00, Sat., 28 Jun. 0.0394 0.0341 0.0370
19:01-20:00, Sat., 28 Jun. 0.0388 0.0349 0.0369
18:01-19:00, Sat., 28 Jun. 0.0388 0.0350 0.0369
17:01-18:00, Sat., 28 Jun. 0.0393 0.0352 0.0368
16:01-17:00, Sat., 28 Jun. 0.0395 0.0349 0.0370
15:01-16:00, Sat., 28 Jun. 0.0385 0.0347 0.0370
14:01-15:00, Sat., 28 Jun. 0.0395 0.0346 0.0372
13:01-14:00, Sat., 28 Jun. 0.0402 0.0352 0.0374
12:01-13:00, Sat., 28 Jun. 0.0396 0.0349 0.0371
11:01-12:00, Sat., 28 Jun. 0.0397 0.0344 0.0369
10:01-11:00, Sat., 28 Jun. 0.0395 0.0352 0.0373
09:01-10:00, Sat., 28 Jun. 0.0398 0.0338 0.0371
08:01-09:00, Sat., 28 Jun. 0.0393 0.0331 0.0369
07:01-08:00, Sat., 28 Jun. 0.0388 0.0348 0.0369
06:01-07:00, Sat., 28 Jun. 0.0391 0.0338 0.0368
05:01-06:00, Sat., 28 Jun. 0.0388 0.0343 0.0366
04:01-05:00, Sat., 28 Jun. 0.0386 0.0343 0.0365
03:01-04:00, Sat., 28 Jun. 0.0388 0.0340 0.0366
02:01-03:00, Sat., 28 Jun. 0.0388 0.0341 0.0368
01:01-02:00, Sat., 28 Jun. 0.0390 0.0347 0.0370
00:01-01:00, Sat., 28 Jun. 0.0388 0.0347 0.0367
23:01-24:00, Fri., 27 Jun. 0.0387 0.0346 0.0366
22:01-23:00, Fri., 27 Jun. 0.0391 0.0342 0.0371
21:01-22:00, Fri., 27 Jun. 0.0391 0.0345 0.0368
20:01-21:00, Fri., 27 Jun. 0.0404 0.0356 0.0376
19:01-20:00, Fri., 27 Jun. 0.0393 0.0351 0.0370
18:01-19:00, Fri., 27 Jun. 0.0393 0.0334 0.0369
17:01-18:00, Fri., 27 Jun. 0.0393 0.0344 0.0367
16:01-17:00, Fri., 27 Jun. 0.0395 0.0347 0.0366
15:01-16:00, Fri., 27 Jun. 0.0388 0.0352 0.0370
14:01-15:00, Fri., 27 Jun. 0.0396 0.0344 0.0371
13:01-14:00, Fri., 27 Jun. 0.0388 0.0351 0.0369
12:01-13:00, Fri., 27 Jun. 0.0389 0.0347 0.0371
11:01-12:00, Fri., 27 Jun. 0.0394 0.0349 0.0368
10:01-11:00, Fri., 27 Jun. 0.0387 0.0345 0.0369
09:01-10:00, Fri., 27 Jun. 0.0397 0.0347 0.0365
08:01-09:00, Fri., 27 Jun. 0.0393 0.0351 0.0366
07:01-08:00, Fri., 27 Jun. 0.0378 0.0348 0.0365
06:01-07:00, Fri., 27 Jun. 0.0391 0.0349 0.0365
05:01-06:00, Fri., 27 Jun. 0.0387 0.0343 0.0364
04:01-05:00, Fri., 27 Jun. 0.0395 0.0343 0.0367
03:01-04:00, Fri., 27 Jun. 0.0383 0.0338 0.0363
02:01-03:00, Fri., 27 Jun. 0.0381 0.0343 0.0364
01:01-02:00, Fri., 27 Jun. 0.0394 0.0348 0.0367
00:01-01:00, Fri., 27 Jun. 0.0398 0.0351 0.0375
23:01-24:00, Thu., 26 Jun. 0.0428 0.0362 0.0395
22:01-23:00, Thu., 26 Jun. 0.0420 0.0368 0.0391
21:01-22:00, Thu., 26 Jun. 0.0422 0.0359 0.0392
20:01-21:00, Thu., 26 Jun. 0.0419 0.0378 0.0399
19:01-20:00, Thu., 26 Jun. 0.0419 0.0348 0.0379
18:01-19:00, Thu., 26 Jun. 0.0388 0.0348 0.0366
17:01-18:00, Thu., 26 Jun. 0.0395 0.0344 0.0367
16:01-17:00, Thu., 26 Jun. 0.0380 0.0333 0.0364
15:01-16:00, Thu., 26 Jun. 0.0382 0.0341 0.0362
14:01-15:00, Thu., 26 Jun. 0.0384 0.0343 0.0365
13:01-14:00, Thu., 26 Jun. 0.0391 0.0343 0.0367
12:01-13:00, Thu., 26 Jun. 0.0382 0.0343 0.0363
11:01-12:00, Thu., 26 Jun. 0.0393 0.0338 0.0364