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

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. 0.0427 0.0381 0.0397
18:01-19:00, Sat., 01 Aug. 0.0419 0.0367 0.0399
17:01-18:00, Sat., 01 Aug. 0.0440 0.0377 0.0402
16:01-17:00, Sat., 01 Aug. 0.0418 0.0375 0.0397
15:01-16:00, Sat., 01 Aug. 0.0419 0.0381 0.0403
14:01-15:00, Sat., 01 Aug. 0.0426 0.0382 0.0403
13:01-14:00, Sat., 01 Aug. 0.0428 0.0379 0.0403
12:01-13:00, Sat., 01 Aug. 0.0428 0.0381 0.0404
11:01-12:00, Sat., 01 Aug. 0.0423 0.0376 0.0404
10:01-11:00, Sat., 01 Aug. 0.0432 0.0383 0.0401
09:01-10:00, Sat., 01 Aug. 0.0426 0.0380 0.0404
08:01-09:00, Sat., 01 Aug. 0.0425 0.0370 0.0403
07:01-08:00, Sat., 01 Aug. 0.0426 0.0385 0.0404
06:01-07:00, Sat., 01 Aug. 0.0423 0.0381 0.0400
05:01-06:00, Sat., 01 Aug. 0.0423 0.0369 0.0402
04:01-05:00, Sat., 01 Aug. 0.0428 0.0374 0.0402
03:01-04:00, Sat., 01 Aug. 0.0421 0.0376 0.0399
02:01-03:00, Sat., 01 Aug. 0.0427 0.0381 0.0403
01:01-02:00, Sat., 01 Aug. 0.0426 0.0378 0.0402
00:01-01:00, Sat., 01 Aug. 0.0423 0.0370 0.0403
23:01-24:00, Fri., 31 Jul. 0.0416 0.0372 0.0399
22:01-23:00, Fri., 31 Jul. 0.0431 0.0375 0.0401
21:01-22:00, Fri., 31 Jul. 0.0437 0.0370 0.0402
20:01-21:00, Fri., 31 Jul. 0.0420 0.0374 0.0398
19:01-20:00, Fri., 31 Jul. 0.0426 0.0384 0.0402
18:01-19:00, Fri., 31 Jul. 0.0418 0.0369 0.0400
17:01-18:00, Fri., 31 Jul. 0.0421 0.0369 0.0396
16:01-17:00, Fri., 31 Jul. 0.0433 0.0380 0.0400
15:01-16:00, Fri., 31 Jul. 0.0420 0.0374 0.0397
14:01-15:00, Fri., 31 Jul. 0.0422 0.0370 0.0398
13:01-14:00, Fri., 31 Jul. 0.0419 0.0365 0.0394
12:01-13:00, Fri., 31 Jul. 0.0419 0.0377 0.0396
11:01-12:00, Fri., 31 Jul. 0.0426 0.0377 0.0397
10:01-11:00, Fri., 31 Jul. 0.0431 0.0381 0.0399
09:01-10:00, Fri., 31 Jul. 0.0427 0.0367 0.0401
08:01-09:00, Fri., 31 Jul. 0.0419 0.0374 0.0397
07:01-08:00, Fri., 31 Jul. 0.0425 0.0370 0.0398
06:01-07:00, Fri., 31 Jul. 0.0428 0.0380 0.0402
05:01-06:00, Fri., 31 Jul. 0.0434 0.0381 0.0400
04:01-05:00, Fri., 31 Jul. 0.0421 0.0379 0.0400
03:01-04:00, Fri., 31 Jul. 0.0436 0.0377 0.0400
02:01-03:00, Fri., 31 Jul. 0.0427 0.0376 0.0398
01:01-02:00, Fri., 31 Jul. 0.0429 0.0376 0.0399
00:01-01:00, Fri., 31 Jul. 0.0423 0.0378 0.0400
23:01-24:00, Thu., 30 Jul. 0.0423 0.0377 0.0402
22:01-23:00, Thu., 30 Jul. 0.0428 0.0377 0.0404
21:01-22:00, Thu., 30 Jul. 0.0429 0.0373 0.0408
20:01-21:00, Thu., 30 Jul. 0.0442 0.0385 0.0417
19:01-20:00, Thu., 30 Jul. 0.0475 0.0416 0.0446
18:01-19:00, Thu., 30 Jul. 0.0461 0.0373 0.0414
17:01-18:00, Thu., 30 Jul. 0.0420 0.0373 0.0397
16:01-17:00, Thu., 30 Jul. 0.0430 0.0373 0.0397
15:01-16:00, Thu., 30 Jul. 0.0433 0.0371 0.0396
14:01-15:00, Thu., 30 Jul. 0.0422 0.0364 0.0393
13:01-14:00, Thu., 30 Jul. 0.0433 0.0374 0.0402
12:01-13:00, Thu., 30 Jul. 0.0412 0.0371 0.0394
11:01-12:00, Thu., 30 Jul. 0.0420 0.0365 0.0389
10:01-11:00, Thu., 30 Jul. 0.0414 0.0363 0.0384
09:01-10:00, Thu., 30 Jul. 0.0418 0.0367 0.0396
08:01-09:00, Thu., 30 Jul. 0.0436 0.0364 0.0396
07:01-08:00, Thu., 30 Jul. 0.0418 0.0381 0.0397
06:01-07:00, Thu., 30 Jul. 0.0416 0.0368 0.0397
05:01-06:00, Thu., 30 Jul. 0.0416 0.0374 0.0397
04:01-05:00, Thu., 30 Jul. 0.0419 0.0374 0.0396
03:01-04:00, Thu., 30 Jul. 0.0419 0.0372 0.0393
02:01-03:00, Thu., 30 Jul. 0.0409 0.0372 0.0393
01:01-02:00, Thu., 30 Jul. 0.0417 0.0365 0.0391
00:01-01:00, Thu., 30 Jul. 0.0419 0.0372 0.0393
23:01-24:00, Wed., 29 Jul. 0.0408 0.0372 0.0392
22:01-23:00, Wed., 29 Jul. 0.0418 0.0365 0.0392
21:01-22:00, Wed., 29 Jul. 0.0414 0.0358 0.0389
20:01-21:00, Wed., 29 Jul. 0.0416 0.0363 0.0392
19:01-20:00, Wed., 29 Jul. 0.0412 0.0366 0.0390
18:01-19:00, Wed., 29 Jul. 0.0424 0.0359 0.0387
17:01-18:00, Wed., 29 Jul. 0.0408 0.0359 0.0383
16:01-17:00, Wed., 29 Jul. 0.0407 0.0363 0.0381
15:01-16:00, Wed., 29 Jul. 0.0411 0.0361 0.0387
14:01-15:00, Wed., 29 Jul. 0.0415 0.0368 0.0392
13:01-14:00, Wed., 29 Jul. 0.0412 0.0364 0.0392
12:01-13:00, Wed., 29 Jul. 0.0423 0.0369 0.0392
11:01-12:00, Wed., 29 Jul. 0.0419 0.0364 0.0389
10:01-11:00, Wed., 29 Jul. 0.0409 0.0365 0.0384
09:01-10:00, Wed., 29 Jul. 0.0409 0.0354 0.0383
08:01-09:00, Wed., 29 Jul. 0.0429 0.0362 0.0391
07:01-08:00, Wed., 29 Jul. 0.0417 0.0364 0.0389
06:01-07:00, Wed., 29 Jul. 0.0412 0.0363 0.0383
05:01-06:00, Wed., 29 Jul. 0.0413 0.0358 0.0382
04:01-05:00, Wed., 29 Jul. 0.0401 0.0360 0.0380
03:01-04:00, Wed., 29 Jul. 0.0405 0.0359 0.0383
02:01-03:00, Wed., 29 Jul. 0.0416 0.0367 0.0392
01:01-02:00, Wed., 29 Jul. 0.0409 0.0367 0.0389
00:01-01:00, Wed., 29 Jul. 0.0414 0.0361 0.0386
23:01-24:00, Tue., 28 Jul. 0.0408 0.0369 0.0386
22:01-23:00, Tue., 28 Jul. 0.0404 0.0361 0.0385
21:01-22:00, Tue., 28 Jul. 0.0410 0.0361 0.0384
20:01-21:00, Tue., 28 Jul. 0.0410 0.0359 0.0389
19:01-20:00, Tue., 28 Jul. 0.0409 0.0368 0.0387
18:01-19:00, Tue., 28 Jul. 0.0426 0.0370 0.0396
17:01-18:00, Tue., 28 Jul. 0.0490 0.0393 0.0436
16:01-17:00, Tue., 28 Jul. 0.0596 0.0474 0.0538
15:01-16:00, Tue., 28 Jul. 0.0551 0.0364 0.0426
14:01-15:00, Tue., 28 Jul. 0.0400 0.0361 0.0381
13:01-14:00, Tue., 28 Jul. 0.0410 0.0355 0.0380
12:01-13:00, Tue., 28 Jul. 0.0405 0.0363 0.0379
11:01-12:00, Tue., 28 Jul. 0.0405 0.0347 0.0376
10:01-11:00, Tue., 28 Jul. 0.0403 0.0355 0.0376
09:01-10:00, Tue., 28 Jul. 0.0401 0.0351 0.0374
08:01-09:00, Tue., 28 Jul. 0.0396 0.0345 0.0368
07:01-08:00, Tue., 28 Jul. 0.0382 0.0347 0.0366
06:01-07:00, Tue., 28 Jul. 0.0392 0.0345 0.0374
05:01-06:00, Tue., 28 Jul. 0.0426 0.0363 0.0392
04:01-05:00, Tue., 28 Jul. 0.0485 0.0409 0.0445
03:01-04:00, Tue., 28 Jul. 0.0509 0.0370 0.0453
02:01-03:00, Tue., 28 Jul. 0.0412 0.0360 0.0382
01:01-02:00, Tue., 28 Jul. 0.0396 0.0353 0.0376
00:01-01:00, Tue., 28 Jul. 0.0401 0.0354 0.0376
23:01-24:00, Mon., 27 Jul. 0.0403 0.0353 0.0377
22:01-23:00, Mon., 27 Jul. 0.0400 0.0347 0.0376
21:01-22:00, Mon., 27 Jul. 0.0406 0.0356 0.0380
20:01-21:00, Mon., 27 Jul. 0.0398 0.0364 0.0382
19:01-20:00, Mon., 27 Jul. 0.0408 0.0360 0.0384
18:01-19:00, Mon., 27 Jul. 0.0410 0.0355 0.0383
17:01-18:00, Mon., 27 Jul. 0.0407 0.0359 0.0383
16:01-17:00, Mon., 27 Jul. 0.0405 0.0350 0.0383
15:01-16:00, Mon., 27 Jul. 0.0423 0.0363 0.0386
14:01-15:00, Mon., 27 Jul. 0.0401 0.0367 0.0384
13:01-14:00, Mon., 27 Jul. 0.0409 0.0355 0.0384
12:01-13:00, Mon., 27 Jul. 0.0413 0.0360 0.0384
11:01-12:00, Mon., 27 Jul. 0.0403 0.0361 0.0381
10:01-11:00, Mon., 27 Jul. 0.0409 0.0353 0.0385
09:01-10:00, Mon., 27 Jul. 0.0413 0.0360 0.0384
08:01-09:00, Mon., 27 Jul. 0.0409 0.0367 0.0389
07:01-08:00, Mon., 27 Jul. 0.0401 0.0350 0.0380
06:01-07:00, Mon., 27 Jul. 0.0404 0.0352 0.0377
05:01-06:00, Mon., 27 Jul. 0.0400 0.0354 0.0376
04:01-05:00, Mon., 27 Jul. 0.0405 0.0353 0.0380
03:01-04:00, Mon., 27 Jul. 0.0401 0.0355 0.0377
02:01-03:00, Mon., 27 Jul. 0.0395 0.0361 0.0377
01:01-02:00, Mon., 27 Jul. 0.0402 0.0355 0.0377
00:01-01:00, Mon., 27 Jul. 0.0394 0.0355 0.0376
23:01-24:00, Sun., 26 Jul. 0.0398 0.0356 0.0377
22:01-23:00, Sun., 26 Jul. 0.0412 0.0346 0.0379
21:01-22:00, Sun., 26 Jul. 0.0435 0.0371 0.0404
20:01-21:00, Sun., 26 Jul. 0.0508 0.0416 0.0459
19:01-20:00, Sun., 26 Jul. 0.0505 0.0436 0.0466
18:01-19:00, Sun., 26 Jul. 0.0479 0.0363 0.0402
17:01-18:00, Sun., 26 Jul. 0.0405 0.0363 0.0382
16:01-17:00, Sun., 26 Jul. 0.0416 0.0374 0.0397
15:01-16:00, Sun., 26 Jul. 0.0472 0.0393 0.0427
14:01-15:00, Sun., 26 Jul. 0.0536 0.0443 0.0488
13:01-14:00, Sun., 26 Jul. 0.0527 0.0441 0.0489
12:01-13:00, Sun., 26 Jul. 0.0455 0.0368 0.0396
11:01-12:00, Sun., 26 Jul. 0.0419 0.0356 0.0389
10:01-11:00, Sun., 26 Jul. 0.0411 0.0367 0.0387
09:01-10:00, Sun., 26 Jul. 0.0411 0.0363 0.0391
08:01-09:00, Sun., 26 Jul. 0.0423 0.0370 0.0388
07:01-08:00, Sun., 26 Jul. 0.0407 0.0369 0.0393
06:01-07:00, Sun., 26 Jul. 0.0420 0.0363 0.0394
05:01-06:00, Sun., 26 Jul. 0.0414 0.0371 0.0394
04:01-05:00, Sun., 26 Jul. 0.0413 0.0373 0.0394
03:01-04:00, Sun., 26 Jul. 0.0411 0.0376 0.0391
02:01-03:00, Sun., 26 Jul. 0.0417 0.0353 0.0392
01:01-02:00, Sun., 26 Jul. 0.0411 0.0370 0.0388
00:01-01:00, Sun., 26 Jul. 0.0419 0.0366 0.0393
23:01-24:00, Sat., 25 Jul. 0.0424 0.0374 0.0397
22:01-23:00, Sat., 25 Jul. 0.0408 0.0364 0.0390
21:01-22:00, Sat., 25 Jul. 0.0416 0.0367 0.0391
20:01-21:00, Sat., 25 Jul. 0.0416 0.0364 0.0392
19:01-20:00, Sat., 25 Jul. 0.0419 0.0356 0.0391
18:01-19:00, Sat., 25 Jul. 0.0411 0.0363 0.0390
17:01-18:00, Sat., 25 Jul. 0.0422 0.0363 0.0392
16:01-17:00, Sat., 25 Jul. 0.0419 0.0363 0.0395
15:01-16:00, Sat., 25 Jul. 0.0416 0.0368 0.0390
14:01-15:00, Sat., 25 Jul. 0.0415 0.0372 0.0394
13:01-14:00, Sat., 25 Jul. 0.0416 0.0374 0.0395
12:01-13:00, Sat., 25 Jul. 0.0424 0.0367 0.0394
11:01-12:00, Sat., 25 Jul. 0.0410 0.0356 0.0384
10:01-11:00, Sat., 25 Jul. 0.0401 0.0354 0.0382
09:01-10:00, Sat., 25 Jul. 0.0409 0.0357 0.0383
08:01-09:00, Sat., 25 Jul. 0.0412 0.0351 0.0381
07:01-08:00, Sat., 25 Jul. 0.0413 0.0367 0.0387
06:01-07:00, Sat., 25 Jul. 0.0412 0.0363 0.0385
05:01-06:00, Sat., 25 Jul. 0.0405 0.0363 0.0384
04:01-05:00, Sat., 25 Jul. 0.0415 0.0364 0.0384
03:01-04:00, Sat., 25 Jul. 0.0415 0.0362 0.0383
02:01-03:00, Sat., 25 Jul. 0.0404 0.0363 0.0383
01:01-02:00, Sat., 25 Jul. 0.0402 0.0359 0.0383
00:01-01:00, Sat., 25 Jul. 0.0416 0.0363 0.0384
23:01-24:00, Fri., 24 Jul. 0.0398 0.0360 0.0382
22:01-23:00, Fri., 24 Jul. 0.0401 0.0363 0.0382
21:01-22:00, Fri., 24 Jul. 0.0413 0.0361 0.0386
20:01-21:00, Fri., 24 Jul. 0.0424 0.0376 0.0399
19:01-20:00, Fri., 24 Jul. 0.0443 0.0384 0.0411
18:01-19:00, Fri., 24 Jul. 0.0483 0.0393 0.0424
17:01-18:00, Fri., 24 Jul. 0.0531 0.0438 0.0491
16:01-17:00, Fri., 24 Jul. 0.0549 0.0384 0.0452
15:01-16:00, Fri., 24 Jul. 0.0419 0.0371 0.0396
14:01-15:00, Fri., 24 Jul. 0.0408 0.0374 0.0391
13:01-14:00, Fri., 24 Jul. 0.0417 0.0361 0.0389
12:01-13:00, Fri., 24 Jul. 0.0420 0.0367 0.0388
11:01-12:00, Fri., 24 Jul. 0.0423 0.0369 0.0395
10:01-11:00, Fri., 24 Jul. 0.0423 0.0366 0.0392
09:01-10:00, Fri., 24 Jul. 0.0416 0.0374 0.0398
08:01-09:00, Fri., 24 Jul. 0.0419 0.0374 0.0398
07:01-08:00, Fri., 24 Jul. 0.0416 0.0374 0.0396
06:01-07:00, Fri., 24 Jul. 0.0423 0.0381 0.0398
05:01-06:00, Fri., 24 Jul. 0.0429 0.0377 0.0398
04:01-05:00, Fri., 24 Jul. 0.0420 0.0373 0.0397
03:01-04:00, Fri., 24 Jul. 0.0423 0.0377 0.0397
02:01-03:00, Fri., 24 Jul. 0.0426 0.0374 0.0399
01:01-02:00, Fri., 24 Jul. 0.0426 0.0378 0.0399
00:01-01:00, Fri., 24 Jul. 0.0417 0.0377 0.0401
23:01-24:00, Thu., 23 Jul. 0.0429 0.0374 0.0398
22:01-23:00, Thu., 23 Jul. 0.0433 0.0377 0.0401
21:01-22:00, Thu., 23 Jul. 0.0419 0.0382 0.0403
20:01-21:00, Thu., 23 Jul. 0.0434 0.0372 0.0399
19:01-20:00, Thu., 23 Jul. 0.0427 0.0377 0.0400
18:01-19:00, Thu., 23 Jul. 0.0416 0.0374 0.0398
17:01-18:00, Thu., 23 Jul. 0.0420 0.0370 0.0398
16:01-17:00, Thu., 23 Jul. 0.0414 0.0370 0.0395
15:01-16:00, Thu., 23 Jul. 0.0408 0.0362 0.0389
14:01-15:00, Thu., 23 Jul. 0.0413 0.0374 0.0394
13:01-14:00, Thu., 23 Jul. 0.0419 0.0363 0.0391
12:01-13:00, Thu., 23 Jul. 0.0423 0.0386 0.0403
11:01-12:00, Thu., 23 Jul. 0.0419 0.0377 0.0399
10:01-11:00, Thu., 23 Jul. 0.0425 0.0379 0.0404
09:01-10:00, Thu., 23 Jul. 0.0416 0.0374 0.0398
08:01-09:00, Thu., 23 Jul. 0.0426 0.0374 0.0398
07:01-08:00, Thu., 23 Jul. 0.0425 0.0379 0.0401
06:01-07:00, Thu., 23 Jul. 0.0416 0.0369 0.0401
05:01-06:00, Thu., 23 Jul. 0.0426 0.0382 0.0403
04:01-05:00, Thu., 23 Jul. 0.0419 0.0368 0.0398
03:01-04:00, Thu., 23 Jul. 0.0423 0.0367 0.0395
02:01-03:00, Thu., 23 Jul. 0.0415 0.0377 0.0395
01:01-02:00, Thu., 23 Jul. 0.0417 0.0367 0.0397
00:01-01:00, Thu., 23 Jul. 0.0419 0.0376 0.0396
23:01-24:00, Wed., 22 Jul. 0.0419 0.0374 0.0396
22:01-23:00, Wed., 22 Jul. 0.0419 0.0374 0.0398
21:01-22:00, Wed., 22 Jul. 0.0428 0.0380 0.0401
20:01-21:00, Wed., 22 Jul. 0.0416 0.0374 0.0398