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
11:01-12:00, Sat., 26 Apr. 0.0416 0.0370 0.0387
10:01-11:00, Sat., 26 Apr. 0.0419 0.0363 0.0386
09:01-10:00, Sat., 26 Apr. 0.0405 0.0362 0.0385
08:01-09:00, Sat., 26 Apr. 0.0411 0.0359 0.0383
07:01-08:00, Sat., 26 Apr. 0.0406 0.0366 0.0383
06:01-07:00, Sat., 26 Apr. 0.0401 0.0349 0.0378
05:01-06:00, Sat., 26 Apr. 0.0398 0.0355 0.0380
04:01-05:00, Sat., 26 Apr. 0.0408 0.0360 0.0383
03:01-04:00, Sat., 26 Apr. 0.0400 0.0351 0.0381
02:01-03:00, Sat., 26 Apr. 0.0404 0.0361 0.0380
01:01-02:00, Sat., 26 Apr. 0.0406 0.0361 0.0382
00:01-01:00, Sat., 26 Apr. 0.0413 0.0364 0.0384
23:01-24:00, Fri., 25 Apr. 0.0402 0.0363 0.0384
22:01-23:00, Fri., 25 Apr. 0.0409 0.0367 0.0387
21:01-22:00, Fri., 25 Apr. 0.0417 0.0365 0.0388
20:01-21:00, Fri., 25 Apr. 0.0409 0.0373 0.0386
19:01-20:00, Fri., 25 Apr. 0.0402 0.0365 0.0385
18:01-19:00, Fri., 25 Apr. 0.0402 0.0365 0.0385
17:01-18:00, Fri., 25 Apr. 0.0411 0.0360 0.0387
16:01-17:00, Fri., 25 Apr. 0.0411 0.0360 0.0390
15:01-16:00, Fri., 25 Apr. 0.0412 0.0360 0.0389
14:01-15:00, Fri., 25 Apr. 0.0411 0.0367 0.0392
13:01-14:00, Fri., 25 Apr. 0.0419 0.0362 0.0389
12:01-13:00, Fri., 25 Apr. 0.0418 0.0371 0.0391
11:01-12:00, Fri., 25 Apr. 0.0410 0.0370 0.0385
10:01-11:00, Fri., 25 Apr. 0.0411 0.0363 0.0386
09:01-10:00, Fri., 25 Apr. 0.0409 0.0362 0.0385
08:01-09:00, Fri., 25 Apr. 0.0418 0.0365 0.0387
07:01-08:00, Fri., 25 Apr. 0.0409 0.0368 0.0387
06:01-07:00, Fri., 25 Apr. 0.0399 0.0358 0.0382
05:01-06:00, Fri., 25 Apr. 0.0405 0.0367 0.0385
04:01-05:00, Fri., 25 Apr. 0.0401 0.0363 0.0385
03:01-04:00, Fri., 25 Apr. 0.0414 0.0362 0.0384
02:01-03:00, Fri., 25 Apr. 0.0412 0.0363 0.0387
01:01-02:00, Fri., 25 Apr. 0.0406 0.0357 0.0384
00:01-01:00, Fri., 25 Apr. 0.0409 0.0348 0.0380
23:01-24:00, Thu., 24 Apr. 0.0403 0.0361 0.0380
22:01-23:00, Thu., 24 Apr. 0.0403 0.0361 0.0383
21:01-22:00, Thu., 24 Apr. 0.0412 0.0367 0.0385
20:01-21:00, Thu., 24 Apr. 0.0405 0.0360 0.0385
19:01-20:00, Thu., 24 Apr. 0.0412 0.0356 0.0384
18:01-19:00, Thu., 24 Apr. 0.0402 0.0363 0.0383
17:01-18:00, Thu., 24 Apr. 0.0416 0.0368 0.0387
16:01-17:00, Thu., 24 Apr. 0.0407 0.0365 0.0387
15:01-16:00, Thu., 24 Apr. 0.0413 0.0373 0.0392
14:01-15:00, Thu., 24 Apr. 0.0415 0.0372 0.0394
13:01-14:00, Thu., 24 Apr. 0.0425 0.0367 0.0393
12:01-13:00, Thu., 24 Apr. 0.0415 0.0357 0.0391
11:01-12:00, Thu., 24 Apr. 0.0419 0.0356 0.0390
10:01-11:00, Thu., 24 Apr. 0.0409 0.0347 0.0387
09:01-10:00, Thu., 24 Apr. 0.0418 0.0367 0.0384
08:01-09:00, Thu., 24 Apr. 0.0409 0.0363 0.0386
07:01-08:00, Thu., 24 Apr. 0.0406 0.0363 0.0384
06:01-07:00, Thu., 24 Apr. 0.0408 0.0352 0.0381
05:01-06:00, Thu., 24 Apr. 0.0402 0.0361 0.0380
04:01-05:00, Thu., 24 Apr. 0.0395 0.0354 0.0378
03:01-04:00, Thu., 24 Apr. 0.0416 0.0353 0.0380
02:01-03:00, Thu., 24 Apr. 0.0402 0.0363 0.0382
01:01-02:00, Thu., 24 Apr. 0.0402 0.0359 0.0379
00:01-01:00, Thu., 24 Apr. 0.0402 0.0360 0.0379
23:01-24:00, Wed., 23 Apr. 0.0405 0.0350 0.0376
22:01-23:00, Wed., 23 Apr. 0.0395 0.0356 0.0374
21:01-22:00, Wed., 23 Apr. 0.0409 0.0355 0.0379
20:01-21:00, Wed., 23 Apr. 0.0402 0.0349 0.0376
19:01-20:00, Wed., 23 Apr. 0.0392 0.0360 0.0377
18:01-19:00, Wed., 23 Apr. 0.0397 0.0358 0.0381
17:01-18:00, Wed., 23 Apr. 0.0427 0.0371 0.0397
16:01-17:00, Wed., 23 Apr. 0.0448 0.0390 0.0418
15:01-16:00, Wed., 23 Apr. 0.0438 0.0384 0.0415
14:01-15:00, Wed., 23 Apr. 0.0472 0.0411 0.0435
13:01-14:00, Wed., 23 Apr. 0.0461 0.0405 0.0439
12:01-13:00, Wed., 23 Apr. 0.0463 0.0410 0.0431
11:01-12:00, Wed., 23 Apr. 0.0441 0.0392 0.0422
10:01-11:00, Wed., 23 Apr. 0.0449 0.0394 0.0417
09:01-10:00, Wed., 23 Apr. 0.0431 0.0378 0.0401
08:01-09:00, Wed., 23 Apr. 0.0418 0.0369 0.0390
07:01-08:00, Wed., 23 Apr. 0.0426 0.0367 0.0399
06:01-07:00, Wed., 23 Apr. 0.0439 0.0388 0.0416
05:01-06:00, Wed., 23 Apr. 0.0513 0.0420 0.0463
04:01-05:00, Wed., 23 Apr. 0.0540 0.0466 0.0497
03:01-04:00, Wed., 23 Apr. 0.0516 0.0468 0.0487
02:01-03:00, Wed., 23 Apr. 0.0499 0.0416 0.0464
01:01-02:00, Wed., 23 Apr. 0.0447 0.0373 0.0399
00:01-01:00, Wed., 23 Apr. 0.0423 0.0364 0.0389
23:01-24:00, Tue., 22 Apr. 0.0411 0.0363 0.0387
22:01-23:00, Tue., 22 Apr. 0.0415 0.0362 0.0389
21:01-22:00, Tue., 22 Apr. 0.0412 0.0363 0.0389
20:01-21:00, Tue., 22 Apr. 0.0408 0.0369 0.0390
19:01-20:00, Tue., 22 Apr. 0.0418 0.0373 0.0393
18:01-19:00, Tue., 22 Apr. 0.0409 0.0369 0.0389
17:01-18:00, Tue., 22 Apr. 0.0433 0.0370 0.0393
16:01-17:00, Tue., 22 Apr. 0.0412 0.0371 0.0391
15:01-16:00, Tue., 22 Apr. 0.0417 0.0372 0.0394
14:01-15:00, Tue., 22 Apr. 0.0417 0.0374 0.0396
13:01-14:00, Tue., 22 Apr. 0.0421 0.0375 0.0394
12:01-13:00, Tue., 22 Apr. 0.0412 0.0374 0.0396
11:01-12:00, Tue., 22 Apr. 0.0415 0.0372 0.0394
10:01-11:00, Tue., 22 Apr. 0.0423 0.0377 0.0398
09:01-10:00, Tue., 22 Apr. 0.0417 0.0377 0.0397
08:01-09:00, Tue., 22 Apr. 0.0420 0.0370 0.0398
07:01-08:00, Tue., 22 Apr. 0.0418 0.0370 0.0394
06:01-07:00, Tue., 22 Apr. 0.0424 0.0374 0.0393
05:01-06:00, Tue., 22 Apr. 0.0405 0.0370 0.0387
04:01-05:00, Tue., 22 Apr. 0.0413 0.0368 0.0390
03:01-04:00, Tue., 22 Apr. 0.0412 0.0361 0.0384
02:01-03:00, Tue., 22 Apr. 0.0409 0.0359 0.0383
01:01-02:00, Tue., 22 Apr. 0.0403 0.0363 0.0384
00:01-01:00, Tue., 22 Apr. 0.0409 0.0360 0.0383
23:01-24:00, Mon., 21 Apr. 0.0411 0.0357 0.0388
22:01-23:00, Mon., 21 Apr. 0.0412 0.0369 0.0389
21:01-22:00, Mon., 21 Apr. 0.0411 0.0360 0.0387
20:01-21:00, Mon., 21 Apr. 0.0410 0.0365 0.0388
19:01-20:00, Mon., 21 Apr. 0.0409 0.0365 0.0388
18:01-19:00, Mon., 21 Apr. 0.0419 0.0371 0.0393
17:01-18:00, Mon., 21 Apr. 0.0424 0.0372 0.0393
16:01-17:00, Mon., 21 Apr. 0.0419 0.0372 0.0394
15:01-16:00, Mon., 21 Apr. 0.0433 0.0375 0.0399
14:01-15:00, Mon., 21 Apr. 0.0431 0.0378 0.0401
13:01-14:00, Mon., 21 Apr. 0.0424 0.0377 0.0402
12:01-13:00, Mon., 21 Apr. 0.0430 0.0381 0.0405
11:01-12:00, Mon., 21 Apr. 0.0429 0.0376 0.0400
10:01-11:00, Mon., 21 Apr. 0.0419 0.0369 0.0397
09:01-10:00, Mon., 21 Apr. 0.0419 0.0375 0.0398
08:01-09:00, Mon., 21 Apr. 0.0418 0.0368 0.0396
07:01-08:00, Mon., 21 Apr. 0.0410 0.0367 0.0391
06:01-07:00, Mon., 21 Apr. 0.0415 0.0367 0.0388
05:01-06:00, Mon., 21 Apr. 0.0405 0.0370 0.0388
04:01-05:00, Mon., 21 Apr. 0.0410 0.0364 0.0390
03:01-04:00, Mon., 21 Apr. 0.0426 0.0360 0.0391
02:01-03:00, Mon., 21 Apr. 0.0412 0.0372 0.0392
01:01-02:00, Mon., 21 Apr. 0.0422 0.0374 0.0395
00:01-01:00, Mon., 21 Apr. 0.0423 0.0369 0.0392
23:01-24:00, Sun., 20 Apr. 0.0415 0.0368 0.0390
22:01-23:00, Sun., 20 Apr. 0.0424 0.0365 0.0393
21:01-22:00, Sun., 20 Apr. 0.0411 0.0368 0.0389
20:01-21:00, Sun., 20 Apr. 0.0412 0.0370 0.0387
19:01-20:00, Sun., 20 Apr. 0.0409 0.0371 0.0389
18:01-19:00, Sun., 20 Apr. 0.0413 0.0365 0.0388
17:01-18:00, Sun., 20 Apr. 0.0401 0.0369 0.0388
16:01-17:00, Sun., 20 Apr. 0.0418 0.0367 0.0387
15:01-16:00, Sun., 20 Apr. 0.0419 0.0363 0.0386
14:01-15:00, Sun., 20 Apr. 0.0416 0.0363 0.0388
13:01-14:00, Sun., 20 Apr. 0.0419 0.0362 0.0388
12:01-13:00, Sun., 20 Apr. 0.0401 0.0367 0.0385
11:01-12:00, Sun., 20 Apr. 0.0419 0.0357 0.0385
10:01-11:00, Sun., 20 Apr. 0.0405 0.0362 0.0383
09:01-10:00, Sun., 20 Apr. 0.0406 0.0363 0.0388
08:01-09:00, Sun., 20 Apr. 0.0405 0.0363 0.0386
07:01-08:00, Sun., 20 Apr. 0.0409 0.0366 0.0389
06:01-07:00, Sun., 20 Apr. 0.0410 0.0362 0.0380
05:01-06:00, Sun., 20 Apr. 0.0408 0.0363 0.0383
04:01-05:00, Sun., 20 Apr. 0.0408 0.0361 0.0382
03:01-04:00, Sun., 20 Apr. 0.0403 0.0360 0.0381
02:01-03:00, Sun., 20 Apr. 0.0407 0.0363 0.0384
01:01-02:00, Sun., 20 Apr. 0.0406 0.0362 0.0381
00:01-01:00, Sun., 20 Apr. 0.0408 0.0360 0.0383
23:01-24:00, Sat., 19 Apr. 0.0406 0.0365 0.0383
22:01-23:00, Sat., 19 Apr. 0.0419 0.0364 0.0385
21:01-22:00, Sat., 19 Apr. 0.0412 0.0368 0.0387
20:01-21:00, Sat., 19 Apr. 0.0422 0.0368 0.0390
19:01-20:00, Sat., 19 Apr. 0.0414 0.0356 0.0391
18:01-19:00, Sat., 19 Apr. 0.0416 0.0361 0.0390
17:01-18:00, Sat., 19 Apr. 0.0412 0.0367 0.0391
16:01-17:00, Sat., 19 Apr. 0.0417 0.0360 0.0392
15:01-16:00, Sat., 19 Apr. 0.0428 0.0370 0.0396
14:01-15:00, Sat., 19 Apr. 0.0416 0.0372 0.0397
13:01-14:00, Sat., 19 Apr. 0.0415 0.0366 0.0395
12:01-13:00, Sat., 19 Apr. 0.0419 0.0378 0.0397
11:01-12:00, Sat., 19 Apr. 0.0412 0.0371 0.0393
10:01-11:00, Sat., 19 Apr. 0.0423 0.0381 0.0399
09:01-10:00, Sat., 19 Apr. 0.0424 0.0375 0.0400
08:01-09:00, Sat., 19 Apr. 0.0444 0.0381 0.0403
07:01-08:00, Sat., 19 Apr. 0.0419 0.0363 0.0393
06:01-07:00, Sat., 19 Apr. 0.0416 0.0360 0.0384
05:01-06:00, Sat., 19 Apr. 0.0406 0.0360 0.0384
04:01-05:00, Sat., 19 Apr. 0.0402 0.0363 0.0383
03:01-04:00, Sat., 19 Apr. 0.0401 0.0363 0.0383
02:01-03:00, Sat., 19 Apr. 0.0403 0.0363 0.0383
01:01-02:00, Sat., 19 Apr. 0.0416 0.0365 0.0385
00:01-01:00, Sat., 19 Apr. 0.0416 0.0363 0.0391
23:01-24:00, Fri., 18 Apr. 0.0423 0.0364 0.0389
22:01-23:00, Fri., 18 Apr. 0.0411 0.0369 0.0386
21:01-22:00, Fri., 18 Apr. 0.0408 0.0360 0.0385
20:01-21:00, Fri., 18 Apr. 0.0405 0.0363 0.0385
19:01-20:00, Fri., 18 Apr. 0.0409 0.0369 0.0387
18:01-19:00, Fri., 18 Apr. 0.0419 0.0367 0.0387
17:01-18:00, Fri., 18 Apr. 0.0410 0.0359 0.0386
16:01-17:00, Fri., 18 Apr. 0.0419 0.0367 0.0387
15:01-16:00, Fri., 18 Apr. 0.0411 0.0367 0.0388
14:01-15:00, Fri., 18 Apr. 0.0418 0.0374 0.0395
13:01-14:00, Fri., 18 Apr. 0.0411 0.0367 0.0391
12:01-13:00, Fri., 18 Apr. 0.0419 0.0379 0.0394
11:01-12:00, Fri., 18 Apr. 0.0419 0.0377 0.0395
10:01-11:00, Fri., 18 Apr. 0.0419 0.0374 0.0400
09:01-10:00, Fri., 18 Apr. 0.0428 0.0382 0.0401
08:01-09:00, Fri., 18 Apr. 0.0427 0.0380 0.0403
07:01-08:00, Fri., 18 Apr. 0.0420 0.0372 0.0397
06:01-07:00, Fri., 18 Apr. 0.0427 0.0375 0.0400
05:01-06:00, Fri., 18 Apr. 0.0412 0.0369 0.0393
04:01-05:00, Fri., 18 Apr. 0.0415 0.0364 0.0392
03:01-04:00, Fri., 18 Apr. 0.0418 0.0361 0.0389
02:01-03:00, Fri., 18 Apr. 0.0410 0.0355 0.0383
01:01-02:00, Fri., 18 Apr. 0.0416 0.0360 0.0385
00:01-01:00, Fri., 18 Apr. 0.0405 0.0363 0.0386
23:01-24:00, Thu., 17 Apr. 0.0402 0.0369 0.0386
22:01-23:00, Thu., 17 Apr. 0.0410 0.0363 0.0388
21:01-22:00, Thu., 17 Apr. 0.0413 0.0367 0.0388
20:01-21:00, Thu., 17 Apr. 0.0410 0.0360 0.0386
19:01-20:00, Thu., 17 Apr. 0.0410 0.0365 0.0390
18:01-19:00, Thu., 17 Apr. 0.0413 0.0363 0.0392
17:01-18:00, Thu., 17 Apr. 0.0414 0.0360 0.0391
16:01-17:00, Thu., 17 Apr. 0.0423 0.0367 0.0390
15:01-16:00, Thu., 17 Apr. 0.0421 0.0371 0.0393
14:01-15:00, Thu., 17 Apr. 0.0419 0.0374 0.0395
13:01-14:00, Thu., 17 Apr. 0.0417 0.0363 0.0394
12:01-13:00, Thu., 17 Apr. 0.0423 0.0363 0.0392
11:01-12:00, Thu., 17 Apr. 0.0415 0.0376 0.0394
10:01-11:00, Thu., 17 Apr. 0.0411 0.0376 0.0393
09:01-10:00, Thu., 17 Apr. 0.0416 0.0365 0.0392
08:01-09:00, Thu., 17 Apr. 0.0417 0.0363 0.0392
07:01-08:00, Thu., 17 Apr. 0.0405 0.0358 0.0384
06:01-07:00, Thu., 17 Apr. 0.0416 0.0360 0.0387
05:01-06:00, Thu., 17 Apr. 0.0417 0.0363 0.0386
04:01-05:00, Thu., 17 Apr. 0.0421 0.0363 0.0385
03:01-04:00, Thu., 17 Apr. 0.0409 0.0365 0.0387
02:01-03:00, Thu., 17 Apr. 0.0408 0.0361 0.0381
01:01-02:00, Thu., 17 Apr. 0.0418 0.0361 0.0385
00:01-01:00, Thu., 17 Apr. 0.0403 0.0352 0.0383
23:01-24:00, Wed., 16 Apr. 0.0405 0.0348 0.0378
22:01-23:00, Wed., 16 Apr. 0.0394 0.0356 0.0378
21:01-22:00, Wed., 16 Apr. 0.0408 0.0349 0.0380
20:01-21:00, Wed., 16 Apr. 0.0409 0.0350 0.0383
19:01-20:00, Wed., 16 Apr. 0.0411 0.0360 0.0384
18:01-19:00, Wed., 16 Apr. 0.0426 0.0365 0.0389
17:01-18:00, Wed., 16 Apr. 0.0419 0.0372 0.0392
16:01-17:00, Wed., 16 Apr. 0.0412 0.0377 0.0395
15:01-16:00, Wed., 16 Apr. 0.0418 0.0379 0.0396
14:01-15:00, Wed., 16 Apr. 0.0428 0.0377 0.0395
13:01-14:00, Wed., 16 Apr. 0.0415 0.0363 0.0395
12:01-13:00, Wed., 16 Apr. 0.0409 0.0358 0.0392