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
17:01-18:00, Sat., 13 Dec. 0.0404 0.0367 0.0383
16:01-17:00, Sat., 13 Dec. 0.0410 0.0358 0.0380
15:01-16:00, Sat., 13 Dec. 0.0400 0.0362 0.0382
14:01-15:00, Sat., 13 Dec. 0.0407 0.0358 0.0383
13:01-14:00, Sat., 13 Dec. 0.0400 0.0362 0.0383
12:01-13:00, Sat., 13 Dec. 0.0401 0.0356 0.0381
11:01-12:00, Sat., 13 Dec. 0.0405 0.0366 0.0383
10:01-11:00, Sat., 13 Dec. 0.0403 0.0361 0.0383
09:01-10:00, Sat., 13 Dec. 0.0401 0.0358 0.0383
08:01-09:00, Sat., 13 Dec. 0.0418 0.0367 0.0386
07:01-08:00, Sat., 13 Dec. 0.0415 0.0363 0.0390
06:01-07:00, Sat., 13 Dec. 0.0412 0.0373 0.0391
05:01-06:00, Sat., 13 Dec. 0.0418 0.0368 0.0387
04:01-05:00, Sat., 13 Dec. 0.0409 0.0360 0.0390
03:01-04:00, Sat., 13 Dec. 0.0415 0.0367 0.0391
02:01-03:00, Sat., 13 Dec. 0.0409 0.0361 0.0388
01:01-02:00, Sat., 13 Dec. 0.0412 0.0370 0.0389
00:01-01:00, Sat., 13 Dec. 0.0412 0.0361 0.0391
23:01-24:00, Fri., 12 Dec. 0.0415 0.0370 0.0388
22:01-23:00, Fri., 12 Dec. 0.0412 0.0370 0.0390
21:01-22:00, Fri., 12 Dec. 0.0407 0.0363 0.0389
20:01-21:00, Fri., 12 Dec. 0.0405 0.0354 0.0386
19:01-20:00, Fri., 12 Dec. 0.0404 0.0368 0.0388
18:01-19:00, Fri., 12 Dec. 0.0405 0.0363 0.0385
17:01-18:00, Fri., 12 Dec. 0.0407 0.0363 0.0385
16:01-17:00, Fri., 12 Dec. 0.0412 0.0364 0.0386
15:01-16:00, Fri., 12 Dec. 0.0412 0.0362 0.0387
14:01-15:00, Fri., 12 Dec. 0.0403 0.0367 0.0383
13:01-14:00, Fri., 12 Dec. 0.0405 0.0364 0.0385
12:01-13:00, Fri., 12 Dec. 0.0408 0.0363 0.0386
11:01-12:00, Fri., 12 Dec. 0.0412 0.0368 0.0388
10:01-11:00, Fri., 12 Dec. 0.0413 0.0364 0.0389
09:01-10:00, Fri., 12 Dec. 0.0415 0.0369 0.0392
08:01-09:00, Fri., 12 Dec. 0.0413 0.0374 0.0395
07:01-08:00, Fri., 12 Dec. 0.0419 0.0374 0.0395
06:01-07:00, Fri., 12 Dec. 0.0423 0.0372 0.0398
05:01-06:00, Fri., 12 Dec. 0.0425 0.0377 0.0401
04:01-05:00, Fri., 12 Dec. 0.0423 0.0371 0.0403
03:01-04:00, Fri., 12 Dec. 0.0420 0.0379 0.0401
02:01-03:00, Fri., 12 Dec. 0.0420 0.0378 0.0401
01:01-02:00, Fri., 12 Dec. 0.0437 0.0370 0.0397
00:01-01:00, Fri., 12 Dec. 0.0414 0.0360 0.0393
23:01-24:00, Thu., 11 Dec. 0.0415 0.0366 0.0391
22:01-23:00, Thu., 11 Dec. 0.0407 0.0366 0.0387
21:01-22:00, Thu., 11 Dec. 0.0416 0.0363 0.0383
20:01-21:00, Thu., 11 Dec. 0.0412 0.0360 0.0383
19:01-20:00, Thu., 11 Dec. 0.0406 0.0358 0.0383
18:01-19:00, Thu., 11 Dec. 0.0406 0.0358 0.0383
17:01-18:00, Thu., 11 Dec. 0.0410 0.0360 0.0383
16:01-17:00, Thu., 11 Dec. 0.0401 0.0367 0.0385
15:01-16:00, Thu., 11 Dec. 0.0409 0.0361 0.0383
14:01-15:00, Thu., 11 Dec. 0.0404 0.0368 0.0387
13:01-14:00, Thu., 11 Dec. 0.0422 0.0363 0.0392
12:01-13:00, Thu., 11 Dec. 0.0415 0.0368 0.0394
11:01-12:00, Thu., 11 Dec. 0.0431 0.0384 0.0403
10:01-11:00, Thu., 11 Dec. 0.0423 0.0379 0.0402
09:01-10:00, Thu., 11 Dec. 0.0422 0.0373 0.0398
08:01-09:00, Thu., 11 Dec. 0.0417 0.0383 0.0399
07:01-08:00, Thu., 11 Dec. 0.0416 0.0371 0.0399
06:01-07:00, Thu., 11 Dec. 0.0424 0.0381 0.0403
05:01-06:00, Thu., 11 Dec. 0.0429 0.0377 0.0401
04:01-05:00, Thu., 11 Dec. 0.0436 0.0374 0.0399
03:01-04:00, Thu., 11 Dec. 0.0417 0.0369 0.0394
02:01-03:00, Thu., 11 Dec. 0.0416 0.0362 0.0393
01:01-02:00, Thu., 11 Dec. 0.0416 0.0363 0.0391
00:01-01:00, Thu., 11 Dec. 0.0409 0.0370 0.0390
23:01-24:00, Wed., 10 Dec. 0.0413 0.0366 0.0390
22:01-23:00, Wed., 10 Dec. 0.0416 0.0367 0.0390
21:01-22:00, Wed., 10 Dec. 0.0408 0.0360 0.0388
20:01-21:00, Wed., 10 Dec. 0.0409 0.0363 0.0387
19:01-20:00, Wed., 10 Dec. 0.0410 0.0363 0.0388
18:01-19:00, Wed., 10 Dec. 0.0412 0.0361 0.0389
17:01-18:00, Wed., 10 Dec. 0.0401 0.0362 0.0385
16:01-17:00, Wed., 10 Dec. 0.0412 0.0361 0.0385
15:01-16:00, Wed., 10 Dec. 0.0403 0.0360 0.0382
14:01-15:00, Wed., 10 Dec. 0.0411 0.0362 0.0384
13:01-14:00, Wed., 10 Dec. 0.0405 0.0363 0.0384
12:01-13:00, Wed., 10 Dec. 0.0416 0.0368 0.0393
11:01-12:00, Wed., 10 Dec. 0.0426 0.0371 0.0400
10:01-11:00, Wed., 10 Dec. 0.0423 0.0378 0.0402
09:01-10:00, Wed., 10 Dec. 0.0434 0.0382 0.0404
08:01-09:00, Wed., 10 Dec. 0.0430 0.0367 0.0404
07:01-08:00, Wed., 10 Dec. 0.0432 0.0382 0.0405
06:01-07:00, Wed., 10 Dec. 0.0426 0.0384 0.0403
05:01-06:00, Wed., 10 Dec. 0.0426 0.0378 0.0401
04:01-05:00, Wed., 10 Dec. 0.0422 0.0369 0.0397
03:01-04:00, Wed., 10 Dec. 0.0419 0.0367 0.0394
02:01-03:00, Wed., 10 Dec. 0.0412 0.0373 0.0392
01:01-02:00, Wed., 10 Dec. 0.0415 0.0367 0.0392
00:01-01:00, Wed., 10 Dec. 0.0412 0.0363 0.0392
23:01-24:00, Tue., 09 Dec. 0.0412 0.0369 0.0391
22:01-23:00, Tue., 09 Dec. 0.0412 0.0378 0.0393
21:01-22:00, Tue., 09 Dec. 0.0423 0.0369 0.0393
20:01-21:00, Tue., 09 Dec. 0.0409 0.0373 0.0391
19:01-20:00, Tue., 09 Dec. 0.0406 0.0360 0.0387
18:01-19:00, Tue., 09 Dec. 0.0416 0.0361 0.0389
17:01-18:00, Tue., 09 Dec. 0.0415 0.0374 0.0390
16:01-17:00, Tue., 09 Dec. 0.0413 0.0360 0.0388
15:01-16:00, Tue., 09 Dec. 0.0419 0.0366 0.0393
14:01-15:00, Tue., 09 Dec. 0.0412 0.0363 0.0391
13:01-14:00, Tue., 09 Dec. 0.0418 0.0367 0.0392
12:01-13:00, Tue., 09 Dec. 0.0416 0.0359 0.0392
11:01-12:00, Tue., 09 Dec. 0.0418 0.0374 0.0392
10:01-11:00, Tue., 09 Dec. 0.0417 0.0360 0.0394
09:01-10:00, Tue., 09 Dec. 0.0416 0.0375 0.0395
08:01-09:00, Tue., 09 Dec. 0.0419 0.0363 0.0397
07:01-08:00, Tue., 09 Dec. 0.0416 0.0372 0.0394
06:01-07:00, Tue., 09 Dec. 0.0419 0.0374 0.0393
05:01-06:00, Tue., 09 Dec. 0.0417 0.0371 0.0396
04:01-05:00, Tue., 09 Dec. 0.0420 0.0378 0.0398
03:01-04:00, Tue., 09 Dec. 0.0417 0.0380 0.0397
02:01-03:00, Tue., 09 Dec. 0.0412 0.0376 0.0394
01:01-02:00, Tue., 09 Dec. 0.0419 0.0374 0.0394
00:01-01:00, Tue., 09 Dec. 0.0422 0.0373 0.0396
23:01-24:00, Mon., 08 Dec. 0.0419 0.0367 0.0392
22:01-23:00, Mon., 08 Dec. 0.0419 0.0374 0.0394
21:01-22:00, Mon., 08 Dec. 0.0410 0.0362 0.0388
20:01-21:00, Mon., 08 Dec. 0.0405 0.0363 0.0386
19:01-20:00, Mon., 08 Dec. 0.0412 0.0360 0.0385
18:01-19:00, Mon., 08 Dec. 0.0407 0.0367 0.0386
17:01-18:00, Mon., 08 Dec. 0.0402 0.0346 0.0383
16:01-17:00, Mon., 08 Dec. 0.0419 0.0364 0.0390
15:01-16:00, Mon., 08 Dec. 0.0412 0.0362 0.0391
14:01-15:00, Mon., 08 Dec. 0.0409 0.0360 0.0390
13:01-14:00, Mon., 08 Dec. 0.0412 0.0373 0.0389
12:01-13:00, Mon., 08 Dec. 0.0419 0.0369 0.0396
11:01-12:00, Mon., 08 Dec. 0.0424 0.0372 0.0394
10:01-11:00, Mon., 08 Dec. 0.0422 0.0375 0.0399
09:01-10:00, Mon., 08 Dec. 0.0426 0.0381 0.0403
08:01-09:00, Mon., 08 Dec. 0.0438 0.0378 0.0402
07:01-08:00, Mon., 08 Dec. 0.0429 0.0379 0.0405
06:01-07:00, Mon., 08 Dec. 0.0434 0.0384 0.0408
05:01-06:00, Mon., 08 Dec. 0.0425 0.0375 0.0405
04:01-05:00, Mon., 08 Dec. 0.0441 0.0385 0.0406
03:01-04:00, Mon., 08 Dec. 0.0423 0.0388 0.0406
02:01-03:00, Mon., 08 Dec. 0.0423 0.0384 0.0403
01:01-02:00, Mon., 08 Dec. 0.0429 0.0372 0.0399
00:01-01:00, Mon., 08 Dec. 0.0417 0.0365 0.0396
23:01-24:00, Sun., 07 Dec. 0.0416 0.0372 0.0393
22:01-23:00, Sun., 07 Dec. 0.0409 0.0366 0.0392
21:01-22:00, Sun., 07 Dec. 0.0409 0.0356 0.0388
20:01-21:00, Sun., 07 Dec. 0.0410 0.0358 0.0388
19:01-20:00, Sun., 07 Dec. 0.0419 0.0366 0.0392
18:01-19:00, Sun., 07 Dec. 0.0410 0.0366 0.0388
17:01-18:00, Sun., 07 Dec. 0.0414 0.0356 0.0384
16:01-17:00, Sun., 07 Dec. 0.0403 0.0365 0.0384
15:01-16:00, Sun., 07 Dec. 0.0409 0.0365 0.0387
14:01-15:00, Sun., 07 Dec. 0.0412 0.0363 0.0388
13:01-14:00, Sun., 07 Dec. 0.0416 0.0359 0.0394
12:01-13:00, Sun., 07 Dec. 0.0408 0.0371 0.0391
11:01-12:00, Sun., 07 Dec. 0.0422 0.0370 0.0390
10:01-11:00, Sun., 07 Dec. 0.0423 0.0374 0.0397
09:01-10:00, Sun., 07 Dec. 0.0433 0.0374 0.0401
08:01-09:00, Sun., 07 Dec. 0.0436 0.0374 0.0408
07:01-08:00, Sun., 07 Dec. 0.0428 0.0387 0.0406
06:01-07:00, Sun., 07 Dec. 0.0433 0.0383 0.0409
05:01-06:00, Sun., 07 Dec. 0.0436 0.0388 0.0408
04:01-05:00, Sun., 07 Dec. 0.0430 0.0389 0.0407
03:01-04:00, Sun., 07 Dec. 0.0425 0.0376 0.0402
02:01-03:00, Sun., 07 Dec. 0.0416 0.0370 0.0398
01:01-02:00, Sun., 07 Dec. 0.0420 0.0371 0.0396
00:01-01:00, Sun., 07 Dec. 0.0433 0.0381 0.0398
23:01-24:00, Sat., 06 Dec. 0.0419 0.0371 0.0396
22:01-23:00, Sat., 06 Dec. 0.0410 0.0367 0.0389
21:01-22:00, Sat., 06 Dec. 0.0424 0.0367 0.0392
20:01-21:00, Sat., 06 Dec. 0.0414 0.0369 0.0389
19:01-20:00, Sat., 06 Dec. 0.0412 0.0362 0.0388
18:01-19:00, Sat., 06 Dec. 0.0407 0.0367 0.0387
17:01-18:00, Sat., 06 Dec. 0.0402 0.0364 0.0385
16:01-17:00, Sat., 06 Dec. 0.0400 0.0354 0.0381
15:01-16:00, Sat., 06 Dec. 0.0399 0.0354 0.0382
14:01-15:00, Sat., 06 Dec. 0.0415 0.0365 0.0385
13:01-14:00, Sat., 06 Dec. 0.0404 0.0362 0.0378
12:01-13:00, Sat., 06 Dec. 0.0401 0.0355 0.0380
11:01-12:00, Sat., 06 Dec. 0.0413 0.0347 0.0387
10:01-11:00, Sat., 06 Dec. 0.0417 0.0365 0.0391
09:01-10:00, Sat., 06 Dec. 0.0414 0.0374 0.0395
08:01-09:00, Sat., 06 Dec. 0.0424 0.0369 0.0397
07:01-08:00, Sat., 06 Dec. 0.0424 0.0366 0.0396
06:01-07:00, Sat., 06 Dec. 0.0419 0.0377 0.0397
05:01-06:00, Sat., 06 Dec. 0.0415 0.0377 0.0396
04:01-05:00, Sat., 06 Dec. 0.0421 0.0367 0.0394
03:01-04:00, Sat., 06 Dec. 0.0414 0.0370 0.0391
02:01-03:00, Sat., 06 Dec. 0.0418 0.0369 0.0390
01:01-02:00, Sat., 06 Dec. 0.0414 0.0356 0.0391
00:01-01:00, Sat., 06 Dec. 0.0416 0.0363 0.0391
23:01-24:00, Fri., 05 Dec. 0.0410 0.0362 0.0388
22:01-23:00, Fri., 05 Dec. 0.0412 0.0372 0.0388
21:01-22:00, Fri., 05 Dec. 0.0414 0.0357 0.0387
20:01-21:00, Fri., 05 Dec. 0.0412 0.0357 0.0387
19:01-20:00, Fri., 05 Dec. 0.0411 0.0369 0.0389
18:01-19:00, Fri., 05 Dec. 0.0418 0.0361 0.0388
17:01-18:00, Fri., 05 Dec. 0.0407 0.0370 0.0391
16:01-17:00, Fri., 05 Dec. 0.0417 0.0367 0.0389
15:01-16:00, Fri., 05 Dec. 0.0411 0.0366 0.0390
14:01-15:00, Fri., 05 Dec. 0.0412 0.0364 0.0389
13:01-14:00, Fri., 05 Dec. 0.0413 0.0370 0.0389
12:01-13:00, Fri., 05 Dec. 0.0419 0.0368 0.0390
11:01-12:00, Fri., 05 Dec. 0.0420 0.0372 0.0392
10:01-11:00, Fri., 05 Dec. 0.0417 0.0364 0.0393
09:01-10:00, Fri., 05 Dec. 0.0415 0.0374 0.0395
08:01-09:00, Fri., 05 Dec. 0.0422 0.0374 0.0400
07:01-08:00, Fri., 05 Dec. 0.0419 0.0366 0.0397
06:01-07:00, Fri., 05 Dec. 0.0419 0.0373 0.0398
05:01-06:00, Fri., 05 Dec. 0.0427 0.0374 0.0399
04:01-05:00, Fri., 05 Dec. 0.0422 0.0375 0.0398
03:01-04:00, Fri., 05 Dec. 0.0413 0.0370 0.0393
02:01-03:00, Fri., 05 Dec. 0.0413 0.0371 0.0393
01:01-02:00, Fri., 05 Dec. 0.0412 0.0362 0.0389
00:01-01:00, Fri., 05 Dec. 0.0416 0.0367 0.0391
23:01-24:00, Thu., 04 Dec. 0.0409 0.0363 0.0384
22:01-23:00, Thu., 04 Dec. 0.0405 0.0367 0.0384
21:01-22:00, Thu., 04 Dec. 0.0415 0.0358 0.0383
20:01-21:00, Thu., 04 Dec. 0.0405 0.0356 0.0382
19:01-20:00, Thu., 04 Dec. 0.0411 0.0355 0.0385
18:01-19:00, Thu., 04 Dec. 0.0407 0.0357 0.0381
17:01-18:00, Thu., 04 Dec. 0.0418 0.0363 0.0385
16:01-17:00, Thu., 04 Dec. 0.0418 0.0365 0.0385
15:01-16:00, Thu., 04 Dec. 0.0409 0.0366 0.0388
14:01-15:00, Thu., 04 Dec. 0.0408 0.0363 0.0384
13:01-14:00, Thu., 04 Dec. 0.0402 0.0087 0.0368
12:01-13:00, Thu., 04 Dec. 0.0407 0.0368 0.0387
11:01-12:00, Thu., 04 Dec. 0.0407 0.0368 0.0388
10:01-11:00, Thu., 04 Dec. 0.0416 0.0368 0.0391
09:01-10:00, Thu., 04 Dec. 0.0407 0.0367 0.0388
08:01-09:00, Thu., 04 Dec. 0.0423 0.0366 0.0388
07:01-08:00, Thu., 04 Dec. 0.0408 0.0365 0.0388
06:01-07:00, Thu., 04 Dec. 0.0408 0.0362 0.0387
05:01-06:00, Thu., 04 Dec. 0.0401 0.0370 0.0385
04:01-05:00, Thu., 04 Dec. 0.0407 0.0363 0.0385
03:01-04:00, Thu., 04 Dec. 0.0407 0.0371 0.0385
02:01-03:00, Thu., 04 Dec. 0.0404 0.0357 0.0386
01:01-02:00, Thu., 04 Dec. 0.0408 0.0369 0.0387
00:01-01:00, Thu., 04 Dec. 0.0406 0.0367 0.0390
23:01-24:00, Wed., 03 Dec. 0.0416 0.0374 0.0395
22:01-23:00, Wed., 03 Dec. 0.0430 0.0388 0.0406
21:01-22:00, Wed., 03 Dec. 0.0450 0.0398 0.0423
20:01-21:00, Wed., 03 Dec. 0.0457 0.0377 0.0410
19:01-20:00, Wed., 03 Dec. 0.0420 0.0376 0.0394
18:01-19:00, Wed., 03 Dec. 0.0415 0.0356 0.0396