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
22:01-23:00, Sat., 29 Mar. 0.0395 0.0347 0.0375
21:01-22:00, Sat., 29 Mar. 0.0399 0.0358 0.0376
20:01-21:00, Sat., 29 Mar. 0.0395 0.0353 0.0377
19:01-20:00, Sat., 29 Mar. 0.0416 0.0358 0.0387
18:01-19:00, Sat., 29 Mar. 0.0439 0.0375 0.0406
17:01-18:00, Sat., 29 Mar. 0.0435 0.0375 0.0403
16:01-17:00, Sat., 29 Mar. 0.0417 0.0382 0.0398
15:01-16:00, Sat., 29 Mar. 0.0447 0.0388 0.0417
14:01-15:00, Sat., 29 Mar. 0.0482 0.0421 0.0456
13:01-14:00, Sat., 29 Mar. 0.0491 0.0444 0.0468
12:01-13:00, Sat., 29 Mar. 0.0532 0.0455 0.0489
11:01-12:00, Sat., 29 Mar. 0.0588 0.0506 0.0554
10:01-11:00, Sat., 29 Mar. 0.0596 0.0429 0.0512
09:01-10:00, Sat., 29 Mar. 0.0569 0.0438 0.0507
08:01-09:00, Sat., 29 Mar. 0.0627 0.0551 0.0587
07:01-08:00, Sat., 29 Mar. 0.0597 0.0505 0.0561
06:01-07:00, Sat., 29 Mar. 0.0532 0.0404 0.0443
05:01-06:00, Sat., 29 Mar. 0.0432 0.0365 0.0397
04:01-05:00, Sat., 29 Mar. 0.0412 0.0358 0.0386
03:01-04:00, Sat., 29 Mar. 0.0414 0.0364 0.0382
02:01-03:00, Sat., 29 Mar. 0.0422 0.0362 0.0394
01:01-02:00, Sat., 29 Mar. 0.0490 0.0398 0.0442
00:01-01:00, Sat., 29 Mar. 0.0579 0.0475 0.0533
23:01-24:00, Fri., 28 Mar. 0.0560 0.0435 0.0483
22:01-23:00, Fri., 28 Mar. 0.0436 0.0374 0.0402
21:01-22:00, Fri., 28 Mar. 0.0418 0.0363 0.0391
20:01-21:00, Fri., 28 Mar. 0.0421 0.0372 0.0396
19:01-20:00, Fri., 28 Mar. 0.0412 0.0375 0.0394
18:01-19:00, Fri., 28 Mar. 0.0416 0.0375 0.0394
17:01-18:00, Fri., 28 Mar. 0.0417 0.0372 0.0393
16:01-17:00, Fri., 28 Mar. 0.0409 0.0367 0.0392
15:01-16:00, Fri., 28 Mar. 0.0416 0.0369 0.0387
14:01-15:00, Fri., 28 Mar. 0.0413 0.0367 0.0389
13:01-14:00, Fri., 28 Mar. 0.0423 0.0371 0.0393
12:01-13:00, Fri., 28 Mar. 0.0417 0.0369 0.0393
11:01-12:00, Fri., 28 Mar. 0.0424 0.0366 0.0394
10:01-11:00, Fri., 28 Mar. 0.0446 0.0395 0.0417
09:01-10:00, Fri., 28 Mar. 0.0565 0.0419 0.0484
08:01-09:00, Fri., 28 Mar. 0.0608 0.0531 0.0575
07:01-08:00, Fri., 28 Mar. 0.0574 0.0510 0.0541
06:01-07:00, Fri., 28 Mar. 0.0530 0.0386 0.0470
05:01-06:00, Fri., 28 Mar. 0.0416 0.0365 0.0390
04:01-05:00, Fri., 28 Mar. 0.0415 0.0372 0.0393
03:01-04:00, Fri., 28 Mar. 0.0409 0.0374 0.0390
02:01-03:00, Fri., 28 Mar. 0.0408 0.0365 0.0387
01:01-02:00, Fri., 28 Mar. 0.0415 0.0367 0.0389
00:01-01:00, Fri., 28 Mar. 0.0405 0.0362 0.0386
23:01-24:00, Thu., 27 Mar. 0.0418 0.0359 0.0386
22:01-23:00, Thu., 27 Mar. 0.0409 0.0355 0.0387
21:01-22:00, Thu., 27 Mar. 0.0409 0.0357 0.0384
20:01-21:00, Thu., 27 Mar. 0.0409 0.0363 0.0386
19:01-20:00, Thu., 27 Mar. 0.0416 0.0363 0.0387
18:01-19:00, Thu., 27 Mar. 0.0415 0.0366 0.0392
17:01-18:00, Thu., 27 Mar. 0.0421 0.0371 0.0395
16:01-17:00, Thu., 27 Mar. 0.0422 0.0367 0.0398
15:01-16:00, Thu., 27 Mar. 0.0425 0.0376 0.0399
14:01-15:00, Thu., 27 Mar. 0.0427 0.0385 0.0403
13:01-14:00, Thu., 27 Mar. 0.0421 0.0378 0.0400
12:01-13:00, Thu., 27 Mar. 0.0434 0.0373 0.0401
11:01-12:00, Thu., 27 Mar. 0.0424 0.0371 0.0400
10:01-11:00, Thu., 27 Mar. 0.0423 0.0377 0.0401
09:01-10:00, Thu., 27 Mar. 0.0419 0.0362 0.0397
08:01-09:00, Thu., 27 Mar. 0.0411 0.0375 0.0395
07:01-08:00, Thu., 27 Mar. 0.0419 0.0361 0.0392
06:01-07:00, Thu., 27 Mar. 0.0417 0.0363 0.0391
05:01-06:00, Thu., 27 Mar. 0.0411 0.0368 0.0389
04:01-05:00, Thu., 27 Mar. 0.0409 0.0368 0.0390
03:01-04:00, Thu., 27 Mar. 0.0410 0.0356 0.0388
02:01-03:00, Thu., 27 Mar. 0.0409 0.0369 0.0389
01:01-02:00, Thu., 27 Mar. 0.0411 0.0370 0.0388
00:01-01:00, Thu., 27 Mar. 0.0416 0.0366 0.0391
23:01-24:00, Wed., 26 Mar. 0.0416 0.0373 0.0390
22:01-23:00, Wed., 26 Mar. 0.0415 0.0370 0.0394
21:01-22:00, Wed., 26 Mar. 0.0423 0.0368 0.0394
20:01-21:00, Wed., 26 Mar. 0.0416 0.0377 0.0398
19:01-20:00, Wed., 26 Mar. 0.0419 0.0372 0.0396
18:01-19:00, Wed., 26 Mar. 0.0424 0.0378 0.0399
17:01-18:00, Wed., 26 Mar. 0.0419 0.0377 0.0399
16:01-17:00, Wed., 26 Mar. 0.0426 0.0381 0.0403
15:01-16:00, Wed., 26 Mar. 0.0429 0.0377 0.0405
14:01-15:00, Wed., 26 Mar. 0.0435 0.0389 0.0407
13:01-14:00, Wed., 26 Mar. 0.0425 0.0384 0.0409
12:01-13:00, Wed., 26 Mar. 0.0436 0.0384 0.0408
11:01-12:00, Wed., 26 Mar. 0.0437 0.0391 0.0409
10:01-11:00, Wed., 26 Mar. 0.0428 0.0381 0.0409
09:01-10:00, Wed., 26 Mar. 0.0424 0.0367 0.0399
08:01-09:00, Wed., 26 Mar. 0.0422 0.0376 0.0398
07:01-08:00, Wed., 26 Mar. 0.0409 0.0377 0.0394
06:01-07:00, Wed., 26 Mar. 0.0419 0.0363 0.0391
05:01-06:00, Wed., 26 Mar. 0.0408 0.0360 0.0387
04:01-05:00, Wed., 26 Mar. 0.0417 0.0366 0.0393
03:01-04:00, Wed., 26 Mar. 0.0416 0.0366 0.0391
02:01-03:00, Wed., 26 Mar. 0.0412 0.0357 0.0389
01:01-02:00, Wed., 26 Mar. 0.0419 0.0364 0.0387
00:01-01:00, Wed., 26 Mar. 0.0409 0.0373 0.0391
23:01-24:00, Tue., 25 Mar. 0.0423 0.0365 0.0397
22:01-23:00, Tue., 25 Mar. 0.0419 0.0366 0.0391
21:01-22:00, Tue., 25 Mar. 0.0426 0.0374 0.0390
20:01-21:00, Tue., 25 Mar. 0.0413 0.0371 0.0390
19:01-20:00, Tue., 25 Mar. 0.0429 0.0367 0.0389
18:01-19:00, Tue., 25 Mar. 0.0419 0.0367 0.0392
17:01-18:00, Tue., 25 Mar. 0.0416 0.0369 0.0397
16:01-17:00, Tue., 25 Mar. 0.0418 0.0372 0.0395
15:01-16:00, Tue., 25 Mar. 0.0414 0.0371 0.0393
14:01-15:00, Tue., 25 Mar. 0.0418 0.0377 0.0397
13:01-14:00, Tue., 25 Mar. 0.0434 0.0371 0.0399
12:01-13:00, Tue., 25 Mar. 0.0436 0.0377 0.0399
11:01-12:00, Tue., 25 Mar. 0.0424 0.0374 0.0396
10:01-11:00, Tue., 25 Mar. 0.0412 0.0379 0.0395
09:01-10:00, Tue., 25 Mar. 0.0413 0.0370 0.0392
08:01-09:00, Tue., 25 Mar. 0.0410 0.0368 0.0389
07:01-08:00, Tue., 25 Mar. 0.0418 0.0358 0.0389
06:01-07:00, Tue., 25 Mar. 0.0412 0.0367 0.0390
05:01-06:00, Tue., 25 Mar. 0.0410 0.0363 0.0389
04:01-05:00, Tue., 25 Mar. 0.0413 0.0363 0.0387
03:01-04:00, Tue., 25 Mar. 0.0404 0.0368 0.0386
02:01-03:00, Tue., 25 Mar. 0.0407 0.0366 0.0386
01:01-02:00, Tue., 25 Mar. 0.0412 0.0368 0.0386
00:01-01:00, Tue., 25 Mar. 0.0416 0.0365 0.0387
23:01-24:00, Mon., 24 Mar. 0.0409 0.0363 0.0387
22:01-23:00, Mon., 24 Mar. 0.0409 0.0366 0.0388
21:01-22:00, Mon., 24 Mar. 0.0415 0.0369 0.0387
20:01-21:00, Mon., 24 Mar. 0.0412 0.0364 0.0388
19:01-20:00, Mon., 24 Mar. 0.0415 0.0369 0.0385
18:01-19:00, Mon., 24 Mar. 0.0406 0.0368 0.0384
17:01-18:00, Mon., 24 Mar. 0.0412 0.0366 0.0385
16:01-17:00, Mon., 24 Mar. 0.0419 0.0370 0.0393
15:01-16:00, Mon., 24 Mar. 0.0421 0.0372 0.0392
14:01-15:00, Mon., 24 Mar. 0.0415 0.0371 0.0393
13:01-14:00, Mon., 24 Mar. 0.0409 0.0365 0.0391
12:01-13:00, Mon., 24 Mar. 0.0410 0.0374 0.0393
11:01-12:00, Mon., 24 Mar. 0.0409 0.0366 0.0392
10:01-11:00, Mon., 24 Mar. 0.0420 0.0362 0.0388
09:01-10:00, Mon., 24 Mar. 0.0405 0.0367 0.0385
08:01-09:00, Mon., 24 Mar. 0.0402 0.0358 0.0382
07:01-08:00, Mon., 24 Mar. 0.0412 0.0363 0.0385
06:01-07:00, Mon., 24 Mar. 0.0414 0.0367 0.0387
05:01-06:00, Mon., 24 Mar. 0.0413 0.0372 0.0388
04:01-05:00, Mon., 24 Mar. 0.0408 0.0366 0.0386
03:01-04:00, Mon., 24 Mar. 0.0412 0.0369 0.0387
02:01-03:00, Mon., 24 Mar. 0.0405 0.0362 0.0386
01:01-02:00, Mon., 24 Mar. 0.0410 0.0363 0.0385
00:01-01:00, Mon., 24 Mar. 0.0405 0.0360 0.0381
23:01-24:00, Sun., 23 Mar. 0.0407 0.0365 0.0383
22:01-23:00, Sun., 23 Mar. 0.0396 0.0361 0.0381
21:01-22:00, Sun., 23 Mar. 0.0401 0.0363 0.0382
20:01-21:00, Sun., 23 Mar. 0.0399 0.0359 0.0380
19:01-20:00, Sun., 23 Mar. 0.0401 0.0362 0.0383
18:01-19:00, Sun., 23 Mar. 0.0412 0.0356 0.0388
17:01-18:00, Sun., 23 Mar. 0.0404 0.0364 0.0388
16:01-17:00, Sun., 23 Mar. 0.0409 0.0360 0.0387
15:01-16:00, Sun., 23 Mar. 0.0415 0.0356 0.0395
14:01-15:00, Sun., 23 Mar. 0.0416 0.0381 0.0399
13:01-14:00, Sun., 23 Mar. 0.0419 0.0374 0.0393
12:01-13:00, Sun., 23 Mar. 0.0417 0.0370 0.0392
11:01-12:00, Sun., 23 Mar. 0.0410 0.0371 0.0389
10:01-11:00, Sun., 23 Mar. 0.0404 0.0363 0.0385
09:01-10:00, Sun., 23 Mar. 0.0413 0.0363 0.0387
08:01-09:00, Sun., 23 Mar. 0.0405 0.0369 0.0386
07:01-08:00, Sun., 23 Mar. 0.0404 0.0363 0.0385
06:01-07:00, Sun., 23 Mar. 0.0415 0.0354 0.0388
05:01-06:00, Sun., 23 Mar. 0.0405 0.0360 0.0384
04:01-05:00, Sun., 23 Mar. 0.0409 0.0358 0.0383
03:01-04:00, Sun., 23 Mar. 0.0414 0.0358 0.0385
02:01-03:00, Sun., 23 Mar. 0.0403 0.0355 0.0382
01:01-02:00, Sun., 23 Mar. 0.0401 0.0362 0.0381
00:01-01:00, Sun., 23 Mar. 0.0402 0.0353 0.0381
23:01-24:00, Sat., 22 Mar. 0.0405 0.0363 0.0381
22:01-23:00, Sat., 22 Mar. 0.0405 0.0358 0.0385
21:01-22:00, Sat., 22 Mar. 0.0405 0.0349 0.0384
20:01-21:00, Sat., 22 Mar. 0.0419 0.0370 0.0388
19:01-20:00, Sat., 22 Mar. 0.0412 0.0364 0.0388
18:01-19:00, Sat., 22 Mar. 0.0405 0.0361 0.0388
17:01-18:00, Sat., 22 Mar. 0.0419 0.0368 0.0391
16:01-17:00, Sat., 22 Mar. 0.0418 0.0374 0.0394
15:01-16:00, Sat., 22 Mar. 0.0424 0.0373 0.0396
14:01-15:00, Sat., 22 Mar. 0.0407 0.0374 0.0391
13:01-14:00, Sat., 22 Mar. 0.0419 0.0371 0.0392
12:01-13:00, Sat., 22 Mar. 0.0416 0.0365 0.0391
11:01-12:00, Sat., 22 Mar. 0.0421 0.0368 0.0393
10:01-11:00, Sat., 22 Mar. 0.0408 0.0370 0.0389
09:01-10:00, Sat., 22 Mar. 0.0412 0.0359 0.0386
08:01-09:00, Sat., 22 Mar. 0.0416 0.0352 0.0386
07:01-08:00, Sat., 22 Mar. 0.0412 0.0356 0.0389
06:01-07:00, Sat., 22 Mar. 0.0412 0.0368 0.0389
05:01-06:00, Sat., 22 Mar. 0.0412 0.0372 0.0389
04:01-05:00, Sat., 22 Mar. 0.0413 0.0363 0.0389
03:01-04:00, Sat., 22 Mar. 0.0412 0.0365 0.0388
02:01-03:00, Sat., 22 Mar. 0.0411 0.0362 0.0386
01:01-02:00, Sat., 22 Mar. 0.0408 0.0365 0.0388
00:01-01:00, Sat., 22 Mar. 0.0407 0.0353 0.0387
23:01-24:00, Fri., 21 Mar. 0.0408 0.0358 0.0384
22:01-23:00, Fri., 21 Mar. 0.0408 0.0366 0.0384
21:01-22:00, Fri., 21 Mar. 0.0407 0.0362 0.0383
20:01-21:00, Fri., 21 Mar. 0.0402 0.0367 0.0384
19:01-20:00, Fri., 21 Mar. 0.0402 0.0361 0.0380
18:01-19:00, Fri., 21 Mar. 0.0404 0.0360 0.0383
17:01-18:00, Fri., 21 Mar. 0.0401 0.0354 0.0381
16:01-17:00, Fri., 21 Mar. 0.0399 0.0366 0.0383
15:01-16:00, Fri., 21 Mar. 0.0418 0.0365 0.0386
14:01-15:00, Fri., 21 Mar. 0.0419 0.0362 0.0388
13:01-14:00, Fri., 21 Mar. 0.0410 0.0364 0.0385
12:01-13:00, Fri., 21 Mar. 0.0405 0.0360 0.0382
11:01-12:00, Fri., 21 Mar. 0.0398 0.0358 0.0380
10:01-11:00, Fri., 21 Mar. 0.0404 0.0354 0.0381
09:01-10:00, Fri., 21 Mar. 0.0405 0.0360 0.0380
08:01-09:00, Fri., 21 Mar. 0.0409 0.0360 0.0388
07:01-08:00, Fri., 21 Mar. 0.0404 0.0363 0.0385
06:01-07:00, Fri., 21 Mar. 0.0404 0.0360 0.0386
05:01-06:00, Fri., 21 Mar. 0.0408 0.0364 0.0385
04:01-05:00, Fri., 21 Mar. 0.0411 0.0356 0.0385
03:01-04:00, Fri., 21 Mar. 0.0405 0.0364 0.0381
02:01-03:00, Fri., 21 Mar. 0.0409 0.0359 0.0382
01:01-02:00, Fri., 21 Mar. 0.0409 0.0353 0.0381
00:01-01:00, Fri., 21 Mar. 0.0396 0.0358 0.0377
23:01-24:00, Thu., 20 Mar. 0.0399 0.0360 0.0378
22:01-23:00, Thu., 20 Mar. 0.0398 0.0361 0.0377
21:01-22:00, Thu., 20 Mar. 0.0399 0.0354 0.0378
20:01-21:00, Thu., 20 Mar. 0.0406 0.0356 0.0381
19:01-20:00, Thu., 20 Mar. 0.0395 0.0354 0.0377
18:01-19:00, Thu., 20 Mar. 0.0401 0.0354 0.0379
17:01-18:00, Thu., 20 Mar. 0.0397 0.0357 0.0374
16:01-17:00, Thu., 20 Mar. 0.0402 0.0347 0.0372
15:01-16:00, Thu., 20 Mar. 0.0405 0.0351 0.0372
14:01-15:00, Thu., 20 Mar. 0.0396 0.0350 0.0376
13:01-14:00, Thu., 20 Mar. 0.0403 0.0360 0.0379
12:01-13:00, Thu., 20 Mar. 0.0407 0.0352 0.0375
11:01-12:00, Thu., 20 Mar. 0.0395 0.0353 0.0377
10:01-11:00, Thu., 20 Mar. 0.0402 0.0337 0.0375
09:01-10:00, Thu., 20 Mar. 0.0397 0.0360 0.0381
08:01-09:00, Thu., 20 Mar. 0.0402 0.0353 0.0381
07:01-08:00, Thu., 20 Mar. 0.0398 0.0353 0.0380
06:01-07:00, Thu., 20 Mar. 0.0407 0.0360 0.0381
05:01-06:00, Thu., 20 Mar. 0.0402 0.0355 0.0380
04:01-05:00, Thu., 20 Mar. 0.0404 0.0356 0.0378
03:01-04:00, Thu., 20 Mar. 0.0403 0.0358 0.0378
02:01-03:00, Thu., 20 Mar. 0.0398 0.0353 0.0378
01:01-02:00, Thu., 20 Mar. 0.0405 0.0358 0.0378
00:01-01:00, Thu., 20 Mar. 0.0409 0.0351 0.0380
23:01-24:00, Wed., 19 Mar. 0.0402 0.0356 0.0377