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
01:01-02:00, Fri., 26 Apr. 0.0403 0.0365 0.0388
00:01-01:00, Fri., 26 Apr. 0.0416 0.0367 0.0391
23:01-24:00, Thu., 25 Apr. 0.0411 0.0371 0.0391
22:01-23:00, Thu., 25 Apr. 0.0403 0.0360 0.0388
21:01-22:00, Thu., 25 Apr. 0.0412 0.0374 0.0388
20:01-21:00, Thu., 25 Apr. 0.0419 0.0369 0.0392
19:01-20:00, Thu., 25 Apr. 0.0423 0.0368 0.0392
18:01-19:00, Thu., 25 Apr. 0.0410 0.0367 0.0389
17:01-18:00, Thu., 25 Apr. 0.0410 0.0365 0.0393
16:01-17:00, Thu., 25 Apr. 0.0420 0.0360 0.0390
15:01-16:00, Thu., 25 Apr. 0.0418 0.0369 0.0392
14:01-15:00, Thu., 25 Apr. 0.0419 0.0374 0.0396
13:01-14:00, Thu., 25 Apr. 0.0426 0.0370 0.0392
12:01-13:00, Thu., 25 Apr. 0.0413 0.0368 0.0390
11:01-12:00, Thu., 25 Apr. 0.0405 0.0358 0.0387
10:01-11:00, Thu., 25 Apr. 0.0407 0.0370 0.0389
09:01-10:00, Thu., 25 Apr. 0.0419 0.0365 0.0387
08:01-09:00, Thu., 25 Apr. 0.0406 0.0361 0.0380
07:01-08:00, Thu., 25 Apr. 0.0412 0.0349 0.0384
06:01-07:00, Thu., 25 Apr. 0.0398 0.0361 0.0381
05:01-06:00, Thu., 25 Apr. 0.0408 0.0360 0.0382
04:01-05:00, Thu., 25 Apr. 0.0402 0.0363 0.0382
03:01-04:00, Thu., 25 Apr. 0.0402 0.0361 0.0382
02:01-03:00, Thu., 25 Apr. 0.0405 0.0363 0.0385
01:01-02:00, Thu., 25 Apr. 0.0423 0.0367 0.0390
00:01-01:00, Thu., 25 Apr. 0.0434 0.0382 0.0406
23:01-24:00, Wed., 24 Apr. 0.0446 0.0394 0.0422
22:01-23:00, Wed., 24 Apr. 0.0456 0.0416 0.0432
21:01-22:00, Wed., 24 Apr. 0.0476 0.0426 0.0450
20:01-21:00, Wed., 24 Apr. 0.0469 0.0409 0.0445
19:01-20:00, Wed., 24 Apr. 0.0461 0.0409 0.0434
18:01-19:00, Wed., 24 Apr. 0.0458 0.0403 0.0426
17:01-18:00, Wed., 24 Apr. 0.0445 0.0403 0.0423
16:01-17:00, Wed., 24 Apr. 0.0442 0.0377 0.0411
15:01-16:00, Wed., 24 Apr. 0.0433 0.0378 0.0403
14:01-15:00, Wed., 24 Apr. 0.0445 0.0389 0.0413
13:01-14:00, Wed., 24 Apr. 0.0447 0.0394 0.0419
12:01-13:00, Wed., 24 Apr. 0.0453 0.0395 0.0424
11:01-12:00, Wed., 24 Apr. 0.0439 0.0386 0.0417
10:01-11:00, Wed., 24 Apr. 0.0439 0.0398 0.0419
09:01-10:00, Wed., 24 Apr. 0.0444 0.0398 0.0418
08:01-09:00, Wed., 24 Apr. 0.0429 0.0377 0.0406
07:01-08:00, Wed., 24 Apr. 0.0455 0.0389 0.0421
06:01-07:00, Wed., 24 Apr. 0.0457 0.0409 0.0435
05:01-06:00, Wed., 24 Apr. 0.0445 0.0392 0.0415
04:01-05:00, Wed., 24 Apr. 0.0410 0.0372 0.0390
03:01-04:00, Wed., 24 Apr. 0.0416 0.0363 0.0391
02:01-03:00, Wed., 24 Apr. 0.0419 0.0356 0.0390
01:01-02:00, Wed., 24 Apr. 0.0407 0.0366 0.0388
00:01-01:00, Wed., 24 Apr. 0.0407 0.0360 0.0388
23:01-24:00, Tue., 23 Apr. 0.0407 0.0370 0.0388
22:01-23:00, Tue., 23 Apr. 0.0423 0.0367 0.0389
21:01-22:00, Tue., 23 Apr. 0.0412 0.0363 0.0387
20:01-21:00, Tue., 23 Apr. 0.0415 0.0354 0.0389
19:01-20:00, Tue., 23 Apr. 0.0413 0.0370 0.0389
18:01-19:00, Tue., 23 Apr. 0.0419 0.0356 0.0388
17:01-18:00, Tue., 23 Apr. 0.0409 0.0362 0.0387
16:01-17:00, Tue., 23 Apr. 0.0416 0.0363 0.0386
15:01-16:00, Tue., 23 Apr. 0.0409 0.0362 0.0388
14:01-15:00, Tue., 23 Apr. 0.0791 0.0370 0.0398
13:01-14:00, Tue., 23 Apr. 0.0408 0.0369 0.0388
12:01-13:00, Tue., 23 Apr. 0.0409 0.0364 0.0388
11:01-12:00, Tue., 23 Apr. 0.0415 0.0370 0.0389
10:01-11:00, Tue., 23 Apr. 0.0406 0.0366 0.0385
09:01-10:00, Tue., 23 Apr. 0.0418 0.0370 0.0390
08:01-09:00, Tue., 23 Apr. 0.0405 0.0362 0.0385
07:01-08:00, Tue., 23 Apr. 0.0416 0.0363 0.0387
06:01-07:00, Tue., 23 Apr. 0.0406 0.0360 0.0386
05:01-06:00, Tue., 23 Apr. 0.0416 0.0370 0.0390
04:01-05:00, Tue., 23 Apr. 0.0414 0.0356 0.0388
03:01-04:00, Tue., 23 Apr. 0.0409 0.0366 0.0389
02:01-03:00, Tue., 23 Apr. 0.0406 0.0364 0.0387
01:01-02:00, Tue., 23 Apr. 0.0403 0.0360 0.0386
00:01-01:00, Tue., 23 Apr. 0.0407 0.0367 0.0385
23:01-24:00, Mon., 22 Apr. 0.0401 0.0357 0.0383
22:01-23:00, Mon., 22 Apr. 0.0405 0.0366 0.0383
21:01-22:00, Mon., 22 Apr. 0.0405 0.0363 0.0384
20:01-21:00, Mon., 22 Apr. 0.0417 0.0367 0.0385
19:01-20:00, Mon., 22 Apr. 0.0412 0.0359 0.0383
18:01-19:00, Mon., 22 Apr. 0.0400 0.0360 0.0381
17:01-18:00, Mon., 22 Apr. 0.0409 0.0360 0.0385
16:01-17:00, Mon., 22 Apr. 0.0408 0.0360 0.0388
15:01-16:00, Mon., 22 Apr. 0.0407 0.0369 0.0386
14:01-15:00, Mon., 22 Apr. 0.0406 0.0363 0.0387
13:01-14:00, Mon., 22 Apr. 0.0403 0.0363 0.0384
12:01-13:00, Mon., 22 Apr. 0.0406 0.0368 0.0387
11:01-12:00, Mon., 22 Apr. 0.0415 0.0369 0.0390
10:01-11:00, Mon., 22 Apr. 0.0449 0.0385 0.0417
09:01-10:00, Mon., 22 Apr. 0.0472 0.0395 0.0427
08:01-09:00, Mon., 22 Apr. 0.0456 0.0410 0.0433
07:01-08:00, Mon., 22 Apr. 0.0467 0.0406 0.0440
06:01-07:00, Mon., 22 Apr. 0.0464 0.0416 0.0441
05:01-06:00, Mon., 22 Apr. 0.0476 0.0421 0.0448
04:01-05:00, Mon., 22 Apr. 0.0474 0.0432 0.0455
03:01-04:00, Mon., 22 Apr. 0.0487 0.0424 0.0454
02:01-03:00, Mon., 22 Apr. 0.0528 0.0457 0.0494
01:01-02:00, Mon., 22 Apr. 0.0529 0.0475 0.0503
00:01-01:00, Mon., 22 Apr. 0.0550 0.0492 0.0520
23:01-24:00, Sun., 21 Apr. 0.0544 0.0472 0.0510
22:01-23:00, Sun., 21 Apr. 0.0527 0.0469 0.0500
21:01-22:00, Sun., 21 Apr. 0.0519 0.0475 0.0498
20:01-21:00, Sun., 21 Apr. 0.0512 0.0458 0.0485
19:01-20:00, Sun., 21 Apr. 0.0516 0.0433 0.0481
18:01-19:00, Sun., 21 Apr. 0.0456 0.0384 0.0418
17:01-18:00, Sun., 21 Apr. 0.0426 0.0383 0.0401
16:01-17:00, Sun., 21 Apr. 0.0429 0.0384 0.0401
15:01-16:00, Sun., 21 Apr. 0.0418 0.0375 0.0400
14:01-15:00, Sun., 21 Apr. 0.0413 0.0374 0.0396
13:01-14:00, Sun., 21 Apr. 0.0424 0.0380 0.0405
12:01-13:00, Sun., 21 Apr. 0.0428 0.0379 0.0401
11:01-12:00, Sun., 21 Apr. 0.0434 0.0384 0.0403
10:01-11:00, Sun., 21 Apr. 0.0428 0.0380 0.0403
09:01-10:00, Sun., 21 Apr. 0.0435 0.0382 0.0403
08:01-09:00, Sun., 21 Apr. 0.0426 0.0380 0.0402
07:01-08:00, Sun., 21 Apr. 0.0436 0.0375 0.0402
06:01-07:00, Sun., 21 Apr. 0.0445 0.0381 0.0402
05:01-06:00, Sun., 21 Apr. 0.0422 0.0382 0.0400
04:01-05:00, Sun., 21 Apr. 0.0429 0.0377 0.0399
03:01-04:00, Sun., 21 Apr. 0.0419 0.0383 0.0402
02:01-03:00, Sun., 21 Apr. 0.0425 0.0382 0.0406
01:01-02:00, Sun., 21 Apr. 0.0435 0.0384 0.0406
00:01-01:00, Sun., 21 Apr. 0.0436 0.0377 0.0403
23:01-24:00, Sat., 20 Apr. 0.0427 0.0374 0.0404
22:01-23:00, Sat., 20 Apr. 0.0426 0.0380 0.0402
21:01-22:00, Sat., 20 Apr. 0.0423 0.0381 0.0401
20:01-21:00, Sat., 20 Apr. 0.0436 0.0381 0.0404
19:01-20:00, Sat., 20 Apr. 0.0427 0.0371 0.0404
18:01-19:00, Sat., 20 Apr. 0.0429 0.0373 0.0405
17:01-18:00, Sat., 20 Apr. 0.0428 0.0384 0.0407
16:01-17:00, Sat., 20 Apr. 0.0438 0.0381 0.0406
15:01-16:00, Sat., 20 Apr. 0.0426 0.0377 0.0408
14:01-15:00, Sat., 20 Apr. 0.0443 0.0391 0.0412
13:01-14:00, Sat., 20 Apr. 0.0447 0.0388 0.0414
12:01-13:00, Sat., 20 Apr. 0.0438 0.0385 0.0409
11:01-12:00, Sat., 20 Apr. 0.0442 0.0388 0.0410
10:01-11:00, Sat., 20 Apr. 0.0440 0.0381 0.0408
09:01-10:00, Sat., 20 Apr. 0.0427 0.0386 0.0408
08:01-09:00, Sat., 20 Apr. 0.0429 0.0386 0.0409
07:01-08:00, Sat., 20 Apr. 0.0424 0.0384 0.0404
06:01-07:00, Sat., 20 Apr. 0.0429 0.0377 0.0402
05:01-06:00, Sat., 20 Apr. 0.0421 0.0380 0.0402
04:01-05:00, Sat., 20 Apr. 0.0428 0.0380 0.0402
03:01-04:00, Sat., 20 Apr. 0.0426 0.0377 0.0403
02:01-03:00, Sat., 20 Apr. 0.0430 0.0377 0.0403
01:01-02:00, Sat., 20 Apr. 0.0423 0.0382 0.0403
00:01-01:00, Sat., 20 Apr. 0.0436 0.0377 0.0401
23:01-24:00, Fri., 19 Apr. 0.0422 0.0376 0.0404
22:01-23:00, Fri., 19 Apr. 0.0429 0.0381 0.0401
21:01-22:00, Fri., 19 Apr. 0.0427 0.0377 0.0398
20:01-21:00, Fri., 19 Apr. 0.0423 0.0381 0.0404
19:01-20:00, Fri., 19 Apr. 0.0435 0.0379 0.0405
18:01-19:00, Fri., 19 Apr. 0.0435 0.0384 0.0404
17:01-18:00, Fri., 19 Apr. 0.0423 0.0378 0.0406
16:01-17:00, Fri., 19 Apr. 0.0430 0.0391 0.0410
15:01-16:00, Fri., 19 Apr. 0.0432 0.0379 0.0411
14:01-15:00, Fri., 19 Apr. 0.0430 0.0388 0.0413
13:01-14:00, Fri., 19 Apr. 0.0430 0.0382 0.0411
12:01-13:00, Fri., 19 Apr. 0.0438 0.0379 0.0413
11:01-12:00, Fri., 19 Apr. 0.0443 0.0390 0.0413
10:01-11:00, Fri., 19 Apr. 0.0434 0.0385 0.0409
09:01-10:00, Fri., 19 Apr. 0.0433 0.0386 0.0408
08:01-09:00, Fri., 19 Apr. 0.0432 0.0387 0.0409
07:01-08:00, Fri., 19 Apr. 0.0426 0.0381 0.0404
06:01-07:00, Fri., 19 Apr. 0.0426 0.0381 0.0405
05:01-06:00, Fri., 19 Apr. 0.0430 0.0382 0.0407
04:01-05:00, Fri., 19 Apr. 0.0427 0.0377 0.0404
03:01-04:00, Fri., 19 Apr. 0.0422 0.0380 0.0403
02:01-03:00, Fri., 19 Apr. 0.0430 0.0381 0.0405
01:01-02:00, Fri., 19 Apr. 0.0429 0.0387 0.0405
00:01-01:00, Fri., 19 Apr. 0.0438 0.0391 0.0410
23:01-24:00, Thu., 18 Apr. 0.0455 0.0388 0.0415
22:01-23:00, Thu., 18 Apr. 0.0449 0.0405 0.0426
21:01-22:00, Thu., 18 Apr. 0.0464 0.0398 0.0435
20:01-21:00, Thu., 18 Apr. 0.0471 0.0423 0.0445
19:01-20:00, Thu., 18 Apr. 0.0472 0.0387 0.0432
18:01-19:00, Thu., 18 Apr. 0.0448 0.0387 0.0414
17:01-18:00, Thu., 18 Apr. 0.0440 0.0381 0.0405
16:01-17:00, Thu., 18 Apr. 0.0428 0.0377 0.0403
15:01-16:00, Thu., 18 Apr. 0.0432 0.0381 0.0407
14:01-15:00, Thu., 18 Apr. 0.0426 0.0382 0.0404
13:01-14:00, Thu., 18 Apr. 0.0429 0.0388 0.0405
12:01-13:00, Thu., 18 Apr. 0.0438 0.0390 0.0407
11:01-12:00, Thu., 18 Apr. 0.0427 0.0392 0.0406
10:01-11:00, Thu., 18 Apr. 0.0431 0.0388 0.0410
09:01-10:00, Thu., 18 Apr. 0.0423 0.0377 0.0406
08:01-09:00, Thu., 18 Apr. 0.0426 0.0378 0.0404
07:01-08:00, Thu., 18 Apr. 0.0433 0.0382 0.0404
06:01-07:00, Thu., 18 Apr. 0.0424 0.0385 0.0406
05:01-06:00, Thu., 18 Apr. 0.0435 0.0381 0.0402
04:01-05:00, Thu., 18 Apr. 0.0429 0.0375 0.0401
03:01-04:00, Thu., 18 Apr. 0.0421 0.0381 0.0399
02:01-03:00, Thu., 18 Apr. 0.0412 0.0369 0.0397
01:01-02:00, Thu., 18 Apr. 0.0418 0.0379 0.0399
00:01-01:00, Thu., 18 Apr. 0.0420 0.0377 0.0397
23:01-24:00, Wed., 17 Apr. 0.0422 0.0377 0.0396
22:01-23:00, Wed., 17 Apr. 0.0420 0.0360 0.0394
21:01-22:00, Wed., 17 Apr. 0.0418 0.0371 0.0396
20:01-21:00, Wed., 17 Apr. 0.0410 0.0375 0.0393
19:01-20:00, Wed., 17 Apr. 0.0417 0.0372 0.0393
18:01-19:00, Wed., 17 Apr. 0.0419 0.0381 0.0397
17:01-18:00, Wed., 17 Apr. 0.0414 0.0370 0.0393
16:01-17:00, Wed., 17 Apr. 0.0420 0.0375 0.0395
15:01-16:00, Wed., 17 Apr. 0.0423 0.0382 0.0401
14:01-15:00, Wed., 17 Apr. 0.0423 0.0385 0.0404
13:01-14:00, Wed., 17 Apr. 0.0419 0.0374 0.0396
12:01-13:00, Wed., 17 Apr. 0.0428 0.0375 0.0397
11:01-12:00, Wed., 17 Apr. 0.0420 0.0372 0.0395
10:01-11:00, Wed., 17 Apr. 0.0419 0.0370 0.0394
09:01-10:00, Wed., 17 Apr. 0.0422 0.0363 0.0394
08:01-09:00, Wed., 17 Apr. 0.0419 0.0370 0.0396
07:01-08:00, Wed., 17 Apr. 0.0429 0.0374 0.0400
06:01-07:00, Wed., 17 Apr. 0.0417 0.0377 0.0397
05:01-06:00, Wed., 17 Apr. 0.0412 0.0372 0.0392
04:01-05:00, Wed., 17 Apr. 0.0413 0.0376 0.0393
03:01-04:00, Wed., 17 Apr. 0.0417 0.0373 0.0395
02:01-03:00, Wed., 17 Apr. 0.0435 0.0370 0.0393
01:01-02:00, Wed., 17 Apr. 0.0418 0.0370 0.0392
00:01-01:00, Wed., 17 Apr. 0.0411 0.0372 0.0392
23:01-24:00, Tue., 16 Apr. 0.0423 0.0373 0.0390
22:01-23:00, Tue., 16 Apr. 0.0412 0.0361 0.0393
21:01-22:00, Tue., 16 Apr. 0.0417 0.0365 0.0392
20:01-21:00, Tue., 16 Apr. 0.0409 0.0355 0.0389
19:01-20:00, Tue., 16 Apr. 0.0419 0.0372 0.0391
18:01-19:00, Tue., 16 Apr. 0.0416 0.0357 0.0390
17:01-18:00, Tue., 16 Apr. 0.0412 0.0373 0.0392
16:01-17:00, Tue., 16 Apr. 0.0413 0.0367 0.0389
15:01-16:00, Tue., 16 Apr. 0.0419 0.0368 0.0393
14:01-15:00, Tue., 16 Apr. 0.0426 0.0367 0.0396
13:01-14:00, Tue., 16 Apr. 0.0416 0.0363 0.0392
12:01-13:00, Tue., 16 Apr. 0.0406 0.0366 0.0391
11:01-12:00, Tue., 16 Apr. 0.0420 0.0368 0.0389
10:01-11:00, Tue., 16 Apr. 0.0415 0.0366 0.0391
09:01-10:00, Tue., 16 Apr. 0.0412 0.0364 0.0389
08:01-09:00, Tue., 16 Apr. 0.0420 0.0364 0.0388
07:01-08:00, Tue., 16 Apr. 0.0409 0.0363 0.0388
06:01-07:00, Tue., 16 Apr. 0.0409 0.0366 0.0389
05:01-06:00, Tue., 16 Apr. 0.0405 0.0365 0.0386
04:01-05:00, Tue., 16 Apr. 0.0406 0.0368 0.0387
03:01-04:00, Tue., 16 Apr. 0.0417 0.0360 0.0389
02:01-03:00, Tue., 16 Apr. 0.0414 0.0362 0.0391