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
10:01-11:00, Fri., 27 Mar. 0.0387 0.0342 0.0368
09:01-10:00, Fri., 27 Mar. 0.0390 0.0339 0.0369
08:01-09:00, Fri., 27 Mar. 0.0386 0.0339 0.0367
07:01-08:00, Fri., 27 Mar. 0.0387 0.0345 0.0369
06:01-07:00, Fri., 27 Mar. 0.0395 0.0348 0.0367
05:01-06:00, Fri., 27 Mar. 0.0388 0.0344 0.0368
04:01-05:00, Fri., 27 Mar. 0.0398 0.0343 0.0369
03:01-04:00, Fri., 27 Mar. 0.0384 0.0346 0.0367
02:01-03:00, Fri., 27 Mar. 0.0386 0.0343 0.0366
01:01-02:00, Fri., 27 Mar. 0.0387 0.0347 0.0368
00:01-01:00, Fri., 27 Mar. 0.0388 0.0346 0.0367
23:01-24:00, Thu., 26 Mar. 0.0393 0.0343 0.0367
22:01-23:00, Thu., 26 Mar. 0.0389 0.0346 0.0367
21:01-22:00, Thu., 26 Mar. 0.0387 0.0346 0.0364
20:01-21:00, Thu., 26 Mar. 0.0384 0.0338 0.0362
19:01-20:00, Thu., 26 Mar. 0.0386 0.0343 0.0364
18:01-19:00, Thu., 26 Mar. 0.0376 0.0334 0.0358
17:01-18:00, Thu., 26 Mar. 0.0381 0.0342 0.0358
16:01-17:00, Thu., 26 Mar. 0.0384 0.0339 0.0362
15:01-16:00, Thu., 26 Mar. 0.0385 0.0343 0.0366
14:01-15:00, Thu., 26 Mar. 0.0400 0.0353 0.0377
13:01-14:00, Thu., 26 Mar. 0.0427 0.0369 0.0394
12:01-13:00, Thu., 26 Mar. 0.0443 0.0382 0.0417
11:01-12:00, Thu., 26 Mar. 0.0437 0.0383 0.0409
10:01-11:00, Thu., 26 Mar. 0.0436 0.0386 0.0412
09:01-10:00, Thu., 26 Mar. 0.0438 0.0395 0.0416
08:01-09:00, Thu., 26 Mar. 0.0454 0.0394 0.0422
07:01-08:00, Thu., 26 Mar. 0.0466 0.0412 0.0433
06:01-07:00, Thu., 26 Mar. 0.0463 0.0412 0.0437
05:01-06:00, Thu., 26 Mar. 0.0455 0.0406 0.0431
04:01-05:00, Thu., 26 Mar. 0.0449 0.0396 0.0422
03:01-04:00, Thu., 26 Mar. 0.0452 0.0405 0.0431
02:01-03:00, Thu., 26 Mar. 0.0478 0.0423 0.0449
01:01-02:00, Thu., 26 Mar. 0.0485 0.0434 0.0462
00:01-01:00, Thu., 26 Mar. 0.0492 0.0438 0.0469
23:01-24:00, Wed., 25 Mar. 0.0471 0.0421 0.0448
22:01-23:00, Wed., 25 Mar. 0.0465 0.0407 0.0439
21:01-22:00, Wed., 25 Mar. 0.0440 0.0395 0.0415
20:01-21:00, Wed., 25 Mar. 0.0442 0.0391 0.0411
19:01-20:00, Wed., 25 Mar. 0.0466 0.0398 0.0433
18:01-19:00, Wed., 25 Mar. 0.0512 0.0454 0.0482
17:01-18:00, Wed., 25 Mar. 0.0493 0.0443 0.0472
16:01-17:00, Wed., 25 Mar. 0.0499 0.0447 0.0477
15:01-16:00, Wed., 25 Mar. 0.0485 0.0437 0.0459
14:01-15:00, Wed., 25 Mar. 0.0484 0.0419 0.0448
13:01-14:00, Wed., 25 Mar. 0.0468 0.0395 0.0430
12:01-13:00, Wed., 25 Mar. 0.0441 0.0377 0.0405
11:01-12:00, Wed., 25 Mar. 0.0407 0.0358 0.0380
10:01-11:00, Wed., 25 Mar. 0.0401 0.0356 0.0380
09:01-10:00, Wed., 25 Mar. 0.0401 0.0350 0.0381
08:01-09:00, Wed., 25 Mar. 0.0403 0.0357 0.0381
07:01-08:00, Wed., 25 Mar. 0.0407 0.0346 0.0380
06:01-07:00, Wed., 25 Mar. 0.0402 0.0359 0.0382
05:01-06:00, Wed., 25 Mar. 0.0397 0.0348 0.0374
04:01-05:00, Wed., 25 Mar. 0.0410 0.0356 0.0376
03:01-04:00, Wed., 25 Mar. 0.0391 0.0349 0.0373
02:01-03:00, Wed., 25 Mar. 0.0401 0.0355 0.0375
01:01-02:00, Wed., 25 Mar. 0.0398 0.0350 0.0373
00:01-01:00, Wed., 25 Mar. 0.0408 0.0356 0.0375
23:01-24:00, Tue., 24 Mar. 0.0391 0.0356 0.0372
22:01-23:00, Tue., 24 Mar. 0.0401 0.0345 0.0376
21:01-22:00, Tue., 24 Mar. 0.0401 0.0350 0.0376
20:01-21:00, Tue., 24 Mar. 0.0398 0.0350 0.0375
19:01-20:00, Tue., 24 Mar. 0.0395 0.0354 0.0371
18:01-19:00, Tue., 24 Mar. 0.0389 0.0351 0.0367
17:01-18:00, Tue., 24 Mar. 0.0398 0.0348 0.0372
16:01-17:00, Tue., 24 Mar. 0.0400 0.0353 0.0375
15:01-16:00, Tue., 24 Mar. 0.0399 0.0363 0.0380
14:01-15:00, Tue., 24 Mar. 0.0406 0.0354 0.0382
13:01-14:00, Tue., 24 Mar. 0.0410 0.0351 0.0381
12:01-13:00, Tue., 24 Mar. 0.0401 0.0354 0.0378
11:01-12:00, Tue., 24 Mar. 0.0402 0.0358 0.0379
10:01-11:00, Tue., 24 Mar. 0.0401 0.0356 0.0378
09:01-10:00, Tue., 24 Mar. 0.0402 0.0349 0.0376
08:01-09:00, Tue., 24 Mar. 0.0398 0.0353 0.0378
07:01-08:00, Tue., 24 Mar. 0.0401 0.0353 0.0379
06:01-07:00, Tue., 24 Mar. 0.0402 0.0357 0.0378
05:01-06:00, Tue., 24 Mar. 0.0414 0.0353 0.0376
04:01-05:00, Tue., 24 Mar. 0.0401 0.0357 0.0376
03:01-04:00, Tue., 24 Mar. 0.0413 0.0353 0.0381
02:01-03:00, Tue., 24 Mar. 0.0402 0.0360 0.0377
01:01-02:00, Tue., 24 Mar. 0.0405 0.0352 0.0378
00:01-01:00, Tue., 24 Mar. 0.0398 0.0355 0.0378
23:01-24:00, Mon., 23 Mar. 0.0401 0.0356 0.0374
22:01-23:00, Mon., 23 Mar. 0.0395 0.0350 0.0374
21:01-22:00, Mon., 23 Mar. 0.0402 0.0346 0.0375
20:01-21:00, Mon., 23 Mar. 0.0390 0.0353 0.0369
19:01-20:00, Mon., 23 Mar. 0.0391 0.0352 0.0373
18:01-19:00, Mon., 23 Mar. 0.0389 0.0344 0.0370
17:01-18:00, Mon., 23 Mar. 0.0397 0.0352 0.0373
16:01-17:00, Mon., 23 Mar. 0.0395 0.0358 0.0373
15:01-16:00, Mon., 23 Mar. 0.0407 0.0358 0.0377
14:01-15:00, Mon., 23 Mar. 0.0404 0.0351 0.0377
13:01-14:00, Mon., 23 Mar. 0.0400 0.0343 0.0378
12:01-13:00, Mon., 23 Mar. 0.0412 0.0345 0.0383
11:01-12:00, Mon., 23 Mar. 0.0429 0.0373 0.0399
10:01-11:00, Mon., 23 Mar. 0.0449 0.0397 0.0424
09:01-10:00, Mon., 23 Mar. 0.0463 0.0405 0.0432
08:01-09:00, Mon., 23 Mar. 0.0472 0.0397 0.0436
07:01-08:00, Mon., 23 Mar. 0.0443 0.0384 0.0416
06:01-07:00, Mon., 23 Mar. 0.0419 0.0363 0.0388
05:01-06:00, Mon., 23 Mar. 0.0405 0.0360 0.0381
04:01-05:00, Mon., 23 Mar. 0.0398 0.0356 0.0379
03:01-04:00, Mon., 23 Mar. 0.0400 0.0357 0.0380
02:01-03:00, Mon., 23 Mar. 0.0401 0.0357 0.0378
01:01-02:00, Mon., 23 Mar. 0.0402 0.0350 0.0371
00:01-01:00, Mon., 23 Mar. 0.0390 0.0353 0.0371
23:01-24:00, Sun., 22 Mar. 0.0388 0.0348 0.0369
22:01-23:00, Sun., 22 Mar. 0.0395 0.0352 0.0372
21:01-22:00, Sun., 22 Mar. 0.0392 0.0351 0.0373
20:01-21:00, Sun., 22 Mar. 0.0398 0.0351 0.0374
19:01-20:00, Sun., 22 Mar. 0.0398 0.0356 0.0375
18:01-19:00, Sun., 22 Mar. 0.0400 0.0354 0.0375
17:01-18:00, Sun., 22 Mar. 0.0399 0.0354 0.0375
16:01-17:00, Sun., 22 Mar. 0.0401 0.0336 0.0370
15:01-16:00, Sun., 22 Mar. 0.0392 0.0350 0.0373
14:01-15:00, Sun., 22 Mar. 0.0402 0.0346 0.0375
13:01-14:00, Sun., 22 Mar. 0.0400 0.0363 0.0376
12:01-13:00, Sun., 22 Mar. 0.0397 0.0354 0.0375
11:01-12:00, Sun., 22 Mar. 0.0401 0.0351 0.0381
10:01-11:00, Sun., 22 Mar. 0.0407 0.0356 0.0379
09:01-10:00, Sun., 22 Mar. 0.0414 0.0360 0.0382
08:01-09:00, Sun., 22 Mar. 0.0402 0.0362 0.0384
07:01-08:00, Sun., 22 Mar. 0.0407 0.0363 0.0387
06:01-07:00, Sun., 22 Mar. 0.0404 0.0359 0.0383
05:01-06:00, Sun., 22 Mar. 0.0399 0.0360 0.0381
04:01-05:00, Sun., 22 Mar. 0.0410 0.0365 0.0383
03:01-04:00, Sun., 22 Mar. 0.0417 0.0356 0.0381
02:01-03:00, Sun., 22 Mar. 0.0405 0.0363 0.0381
01:01-02:00, Sun., 22 Mar. 0.0410 0.0355 0.0378
00:01-01:00, Sun., 22 Mar. 0.0411 0.0360 0.0379
23:01-24:00, Sat., 21 Mar. 0.0398 0.0354 0.0374
22:01-23:00, Sat., 21 Mar. 0.0401 0.0354 0.0374
21:01-22:00, Sat., 21 Mar. 0.0389 0.0356 0.0374
20:01-21:00, Sat., 21 Mar. 0.0404 0.0353 0.0374
19:01-20:00, Sat., 21 Mar. 0.0400 0.0349 0.0376
18:01-19:00, Sat., 21 Mar. 0.0391 0.0346 0.0370
17:01-18:00, Sat., 21 Mar. 0.0394 0.0350 0.0371
16:01-17:00, Sat., 21 Mar. 0.0392 0.0347 0.0373
15:01-16:00, Sat., 21 Mar. 0.0395 0.0360 0.0377
14:01-15:00, Sat., 21 Mar. 0.0403 0.0356 0.0379
13:01-14:00, Sat., 21 Mar. 0.0398 0.0360 0.0380
12:01-13:00, Sat., 21 Mar. 0.0395 0.0352 0.0376
11:01-12:00, Sat., 21 Mar. 0.0401 0.0349 0.0378
10:01-11:00, Sat., 21 Mar. 0.0395 0.0352 0.0371
09:01-10:00, Sat., 21 Mar. 0.0395 0.0348 0.0376
08:01-09:00, Sat., 21 Mar. 0.0411 0.0360 0.0380
07:01-08:00, Sat., 21 Mar. 0.0400 0.0356 0.0378
06:01-07:00, Sat., 21 Mar. 0.0397 0.0360 0.0376
05:01-06:00, Sat., 21 Mar. 0.0391 0.0356 0.0374
04:01-05:00, Sat., 21 Mar. 0.0395 0.0351 0.0372
03:01-04:00, Sat., 21 Mar. 0.0401 0.0360 0.0378
02:01-03:00, Sat., 21 Mar. 0.0402 0.0353 0.0378
01:01-02:00, Sat., 21 Mar. 0.0391 0.0350 0.0374
00:01-01:00, Sat., 21 Mar. 0.0399 0.0352 0.0373
23:01-24:00, Fri., 20 Mar. 0.0391 0.0356 0.0374
22:01-23:00, Fri., 20 Mar. 0.0398 0.0350 0.0375
21:01-22:00, Fri., 20 Mar. 0.0397 0.0346 0.0376
20:01-21:00, Fri., 20 Mar. 0.0401 0.0353 0.0376
19:01-20:00, Fri., 20 Mar. 0.0402 0.0351 0.0375
18:01-19:00, Fri., 20 Mar. 0.0405 0.0357 0.0381
17:01-18:00, Fri., 20 Mar. 0.0405 0.0360 0.0383
16:01-17:00, Fri., 20 Mar. 0.0391 0.0348 0.0372
15:01-16:00, Fri., 20 Mar. 0.0405 0.0351 0.0375
14:01-15:00, Fri., 20 Mar. 0.0405 0.0360 0.0383
13:01-14:00, Fri., 20 Mar. 0.0409 0.0359 0.0384
12:01-13:00, Fri., 20 Mar. 0.0419 0.0369 0.0396
11:01-12:00, Fri., 20 Mar. 0.0478 0.0396 0.0436
10:01-11:00, Fri., 20 Mar. 0.0486 0.0376 0.0432
09:01-10:00, Fri., 20 Mar. 0.0425 0.0368 0.0396
08:01-09:00, Fri., 20 Mar. 0.0489 0.0408 0.0441
07:01-08:00, Fri., 20 Mar. 0.0475 0.0369 0.0415
06:01-07:00, Fri., 20 Mar. 0.0493 0.0397 0.0443
05:01-06:00, Fri., 20 Mar. 0.0495 0.0367 0.0418
04:01-05:00, Fri., 20 Mar. 0.0417 0.0348 0.0383
03:01-04:00, Fri., 20 Mar. 0.0413 0.0363 0.0381
02:01-03:00, Fri., 20 Mar. 0.0412 0.0363 0.0387
01:01-02:00, Fri., 20 Mar. 0.0426 0.0365 0.0398
00:01-01:00, Fri., 20 Mar. 0.0427 0.0377 0.0396
23:01-24:00, Thu., 19 Mar. 0.0420 0.0363 0.0393
22:01-23:00, Thu., 19 Mar. 0.0402 0.0354 0.0378
21:01-22:00, Thu., 19 Mar. 0.0393 0.0349 0.0375
20:01-21:00, Thu., 19 Mar. 0.0404 0.0349 0.0378
19:01-20:00, Thu., 19 Mar. 0.0400 0.0351 0.0377
18:01-19:00, Thu., 19 Mar. 0.0409 0.0364 0.0382
17:01-18:00, Thu., 19 Mar. 0.0407 0.0363 0.0384
16:01-17:00, Thu., 19 Mar. 0.0402 0.0361 0.0382
15:01-16:00, Thu., 19 Mar. 0.0404 0.0358 0.0383
14:01-15:00, Thu., 19 Mar. 0.0408 0.0366 0.0385
13:01-14:00, Thu., 19 Mar. 0.0411 0.0358 0.0387
12:01-13:00, Thu., 19 Mar. 0.0417 0.0370 0.0388
11:01-12:00, Thu., 19 Mar. 0.0415 0.0363 0.0385
10:01-11:00, Thu., 19 Mar. 0.0409 0.0364 0.0389
09:01-10:00, Thu., 19 Mar. 0.0437 0.0382 0.0410
08:01-09:00, Thu., 19 Mar. 0.0434 0.0388 0.0411
07:01-08:00, Thu., 19 Mar. 0.0474 0.0408 0.0438
06:01-07:00, Thu., 19 Mar. 0.0486 0.0402 0.0451
05:01-06:00, Thu., 19 Mar. 0.0426 0.0357 0.0386
04:01-05:00, Thu., 19 Mar. 0.0398 0.0346 0.0373
03:01-04:00, Thu., 19 Mar. 0.0403 0.0346 0.0376
02:01-03:00, Thu., 19 Mar. 0.0408 0.0343 0.0374
01:01-02:00, Thu., 19 Mar. 0.0388 0.0348 0.0370
00:01-01:00, Thu., 19 Mar. 0.0393 0.0347 0.0370
23:01-24:00, Wed., 18 Mar. 0.0398 0.0354 0.0372
22:01-23:00, Wed., 18 Mar. 0.0392 0.0358 0.0374
21:01-22:00, Wed., 18 Mar. 0.0398 0.0343 0.0373
20:01-21:00, Wed., 18 Mar. 0.0403 0.0353 0.0373
19:01-20:00, Wed., 18 Mar. 0.0395 0.0353 0.0372
18:01-19:00, Wed., 18 Mar. 0.0395 0.0355 0.0376
17:01-18:00, Wed., 18 Mar. 0.0398 0.0352 0.0376
16:01-17:00, Wed., 18 Mar. 0.0399 0.0358 0.0378
15:01-16:00, Wed., 18 Mar. 0.0396 0.0355 0.0376
14:01-15:00, Wed., 18 Mar. 0.0391 0.0353 0.0373
13:01-14:00, Wed., 18 Mar. 0.0405 0.0350 0.0376
12:01-13:00, Wed., 18 Mar. 0.0409 0.0353 0.0376
11:01-12:00, Wed., 18 Mar. 0.0405 0.0356 0.0376
10:01-11:00, Wed., 18 Mar. 0.0397 0.0362 0.0378
09:01-10:00, Wed., 18 Mar. 0.0401 0.0358 0.0379
08:01-09:00, Wed., 18 Mar. 0.0400 0.0363 0.0380
07:01-08:00, Wed., 18 Mar. 0.0410 0.0358 0.0383
06:01-07:00, Wed., 18 Mar. 0.0412 0.0358 0.0383
05:01-06:00, Wed., 18 Mar. 0.0409 0.0363 0.0382
04:01-05:00, Wed., 18 Mar. 0.0402 0.0358 0.0381
03:01-04:00, Wed., 18 Mar. 0.0399 0.0356 0.0380
02:01-03:00, Wed., 18 Mar. 0.0402 0.0356 0.0379
01:01-02:00, Wed., 18 Mar. 0.0402 0.0358 0.0378
00:01-01:00, Wed., 18 Mar. 0.0401 0.0356 0.0376
23:01-24:00, Tue., 17 Mar. 0.0403 0.0354 0.0376
22:01-23:00, Tue., 17 Mar. 0.0393 0.0355 0.0374
21:01-22:00, Tue., 17 Mar. 0.0399 0.0350 0.0376
20:01-21:00, Tue., 17 Mar. 0.0393 0.0352 0.0372
19:01-20:00, Tue., 17 Mar. 0.0409 0.0348 0.0376
18:01-19:00, Tue., 17 Mar. 0.0393 0.0354 0.0371
17:01-18:00, Tue., 17 Mar. 0.0391 0.0348 0.0369
16:01-17:00, Tue., 17 Mar. 0.0398 0.0343 0.0371
15:01-16:00, Tue., 17 Mar. 0.0402 0.0357 0.0379
14:01-15:00, Tue., 17 Mar. 0.0399 0.0357 0.0376
13:01-14:00, Tue., 17 Mar. 0.0398 0.0359 0.0378
12:01-13:00, Tue., 17 Mar. 0.0397 0.0353 0.0378
11:01-12:00, Tue., 17 Mar. 0.0395 0.0351 0.0376