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
19:01-20:00, Fri., 13 Feb. 0.0400 0.0359 0.0376
18:01-19:00, Fri., 13 Feb. 0.0401 0.0351 0.0375
17:01-18:00, Fri., 13 Feb. 0.0395 0.0353 0.0374
16:01-17:00, Fri., 13 Feb. 0.0393 0.0356 0.0373
15:01-16:00, Fri., 13 Feb. 0.0405 0.0340 0.0374
14:01-15:00, Fri., 13 Feb. 0.0396 0.0355 0.0377
13:01-14:00, Fri., 13 Feb. 0.0400 0.0359 0.0377
12:01-13:00, Fri., 13 Feb. 0.0409 0.0359 0.0381
11:01-12:00, Fri., 13 Feb. 0.0409 0.0357 0.0382
10:01-11:00, Fri., 13 Feb. 0.0407 0.0360 0.0385
09:01-10:00, Fri., 13 Feb. 0.0408 0.0362 0.0384
08:01-09:00, Fri., 13 Feb. 0.0412 0.0361 0.0387
07:01-08:00, Fri., 13 Feb. 0.0414 0.0360 0.0390
06:01-07:00, Fri., 13 Feb. 0.0406 0.0371 0.0392
05:01-06:00, Fri., 13 Feb. 0.0409 0.0364 0.0388
04:01-05:00, Fri., 13 Feb. 0.0408 0.0364 0.0386
03:01-04:00, Fri., 13 Feb. 0.0414 0.0367 0.0385
02:01-03:00, Fri., 13 Feb. 0.0406 0.0354 0.0384
01:01-02:00, Fri., 13 Feb. 0.0401 0.0365 0.0384
00:01-01:00, Fri., 13 Feb. 0.0409 0.0354 0.0385
23:01-24:00, Thu., 12 Feb. 0.0402 0.0362 0.0380
22:01-23:00, Thu., 12 Feb. 0.0404 0.0363 0.0378
21:01-22:00, Thu., 12 Feb. 0.0399 0.0356 0.0377
20:01-21:00, Thu., 12 Feb. 0.0401 0.0358 0.0378
19:01-20:00, Thu., 12 Feb. 0.0401 0.0350 0.0375
18:01-19:00, Thu., 12 Feb. 0.0395 0.0355 0.0375
17:01-18:00, Thu., 12 Feb. 0.0408 0.0346 0.0374
16:01-17:00, Thu., 12 Feb. 0.0403 0.0356 0.0377
15:01-16:00, Thu., 12 Feb. 0.0391 0.0347 0.0373
14:01-15:00, Thu., 12 Feb. 0.0395 0.0353 0.0374
13:01-14:00, Thu., 12 Feb. 0.0406 0.0352 0.0376
12:01-13:00, Thu., 12 Feb. 0.0398 0.0353 0.0378
11:01-12:00, Thu., 12 Feb. 0.0402 0.0357 0.0377
10:01-11:00, Thu., 12 Feb. 0.0397 0.0356 0.0379
09:01-10:00, Thu., 12 Feb. 0.0400 0.0343 0.0374
08:01-09:00, Thu., 12 Feb. 0.0398 0.0360 0.0377
07:01-08:00, Thu., 12 Feb. 0.0409 0.0362 0.0382
06:01-07:00, Thu., 12 Feb. 0.0407 0.0360 0.0379
05:01-06:00, Thu., 12 Feb. 0.0405 0.0363 0.0382
04:01-05:00, Thu., 12 Feb. 0.0402 0.0354 0.0378
03:01-04:00, Thu., 12 Feb. 0.0402 0.0363 0.0381
02:01-03:00, Thu., 12 Feb. 0.0407 0.0354 0.0377
01:01-02:00, Thu., 12 Feb. 0.0398 0.0350 0.0371
00:01-01:00, Thu., 12 Feb. 0.0407 0.0351 0.0373
23:01-24:00, Wed., 11 Feb. 0.0404 0.0350 0.0372
22:01-23:00, Wed., 11 Feb. 0.0401 0.0341 0.0369
21:01-22:00, Wed., 11 Feb. 0.0395 0.0337 0.0369
20:01-21:00, Wed., 11 Feb. 0.0393 0.0353 0.0377
19:01-20:00, Wed., 11 Feb. 0.0419 0.0358 0.0380
18:01-19:00, Wed., 11 Feb. 0.0409 0.0352 0.0380
17:01-18:00, Wed., 11 Feb. 0.0412 0.0358 0.0381
16:01-17:00, Wed., 11 Feb. 0.0412 0.0357 0.0381
15:01-16:00, Wed., 11 Feb. 0.0411 0.0367 0.0386
14:01-15:00, Wed., 11 Feb. 0.0419 0.0374 0.0398
13:01-14:00, Wed., 11 Feb. 0.0499 0.0394 0.0444
12:01-13:00, Wed., 11 Feb. 0.0677 0.0492 0.0583
11:01-12:00, Wed., 11 Feb. 0.0666 0.0604 0.0639
10:01-11:00, Wed., 11 Feb. 0.0675 0.0625 0.0649
09:01-10:00, Wed., 11 Feb. 0.0658 0.0578 0.0623
08:01-09:00, Wed., 11 Feb. 0.0600 0.0512 0.0545
07:01-08:00, Wed., 11 Feb. 0.0554 0.0473 0.0521
06:01-07:00, Wed., 11 Feb. 0.0484 0.0395 0.0442
05:01-06:00, Wed., 11 Feb. 0.0440 0.0371 0.0398
04:01-05:00, Wed., 11 Feb. 0.0402 0.0363 0.0379
03:01-04:00, Wed., 11 Feb. 0.0405 0.0358 0.0381
02:01-03:00, Wed., 11 Feb. 0.0398 0.0354 0.0377
01:01-02:00, Wed., 11 Feb. 0.0403 0.0360 0.0378
00:01-01:00, Wed., 11 Feb. 0.0408 0.0360 0.0381
23:01-24:00, Tue., 10 Feb. 0.0401 0.0359 0.0382
22:01-23:00, Tue., 10 Feb. 0.0406 0.0363 0.0384
21:01-22:00, Tue., 10 Feb. 0.0406 0.0349 0.0380
20:01-21:00, Tue., 10 Feb. 0.0407 0.0364 0.0383
19:01-20:00, Tue., 10 Feb. 0.0403 0.0346 0.0381
18:01-19:00, Tue., 10 Feb. 0.0400 0.0354 0.0379
17:01-18:00, Tue., 10 Feb. 0.0406 0.0360 0.0380
16:01-17:00, Tue., 10 Feb. 0.0398 0.0355 0.0379
15:01-16:00, Tue., 10 Feb. 0.0405 0.0361 0.0379
14:01-15:00, Tue., 10 Feb. 0.0400 0.0360 0.0379
13:01-14:00, Tue., 10 Feb. 0.0401 0.0355 0.0380
12:01-13:00, Tue., 10 Feb. 0.0409 0.0346 0.0379
11:01-12:00, Tue., 10 Feb. 0.0398 0.0354 0.0374
10:01-11:00, Tue., 10 Feb. 0.0397 0.0356 0.0379
09:01-10:00, Tue., 10 Feb. 0.0405 0.0355 0.0379
08:01-09:00, Tue., 10 Feb. 0.0405 0.0368 0.0386
07:01-08:00, Tue., 10 Feb. 0.0425 0.0362 0.0385
06:01-07:00, Tue., 10 Feb. 0.0409 0.0357 0.0381
05:01-06:00, Tue., 10 Feb. 0.0411 0.0360 0.0382
04:01-05:00, Tue., 10 Feb. 0.0402 0.0359 0.0379
03:01-04:00, Tue., 10 Feb. 0.0405 0.0347 0.0379
02:01-03:00, Tue., 10 Feb. 0.0399 0.0353 0.0379
01:01-02:00, Tue., 10 Feb. 0.0401 0.0352 0.0377
00:01-01:00, Tue., 10 Feb. 0.0396 0.0355 0.0378
23:01-24:00, Mon., 09 Feb. 0.0402 0.0361 0.0379
22:01-23:00, Mon., 09 Feb. 0.0395 0.0355 0.0379
21:01-22:00, Mon., 09 Feb. 0.0404 0.0350 0.0375
20:01-21:00, Mon., 09 Feb. 0.0401 0.0350 0.0374
19:01-20:00, Mon., 09 Feb. 0.0395 0.0349 0.0373
18:01-19:00, Mon., 09 Feb. 0.0411 0.0346 0.0377
17:01-18:00, Mon., 09 Feb. 0.0402 0.0360 0.0375
16:01-17:00, Mon., 09 Feb. 0.0398 0.0359 0.0376
15:01-16:00, Mon., 09 Feb. 0.0394 0.0354 0.0378
14:01-15:00, Mon., 09 Feb. 0.0403 0.0352 0.0376
13:01-14:00, Mon., 09 Feb. 0.0400 0.0365 0.0380
12:01-13:00, Mon., 09 Feb. 0.0405 0.0356 0.0380
11:01-12:00, Mon., 09 Feb. 0.0398 0.0356 0.0380
10:01-11:00, Mon., 09 Feb. 0.0393 0.0355 0.0376
09:01-10:00, Mon., 09 Feb. 0.0409 0.0361 0.0383
08:01-09:00, Mon., 09 Feb. 0.0399 0.0358 0.0381
07:01-08:00, Mon., 09 Feb. 0.0410 0.0356 0.0381
06:01-07:00, Mon., 09 Feb. 0.0405 0.0356 0.0380
05:01-06:00, Mon., 09 Feb. 0.0407 0.0362 0.0382
04:01-05:00, Mon., 09 Feb. 0.0401 0.0362 0.0384
03:01-04:00, Mon., 09 Feb. 0.0416 0.0365 0.0383
02:01-03:00, Mon., 09 Feb. 0.0416 0.0363 0.0384
01:01-02:00, Mon., 09 Feb. 0.0409 0.0361 0.0384
00:01-01:00, Mon., 09 Feb. 0.0400 0.0363 0.0383
23:01-24:00, Sun., 08 Feb. 0.0418 0.0366 0.0386
22:01-23:00, Sun., 08 Feb. 0.0413 0.0356 0.0386
21:01-22:00, Sun., 08 Feb. 0.0415 0.0354 0.0384
20:01-21:00, Sun., 08 Feb. 0.0402 0.0356 0.0381
19:01-20:00, Sun., 08 Feb. 0.0409 0.0349 0.0378
18:01-19:00, Sun., 08 Feb. 0.0406 0.0351 0.0380
17:01-18:00, Sun., 08 Feb. 0.0399 0.0356 0.0379
16:01-17:00, Sun., 08 Feb. 0.0402 0.0361 0.0380
15:01-16:00, Sun., 08 Feb. 0.0401 0.0353 0.0379
14:01-15:00, Sun., 08 Feb. 0.0406 0.0342 0.0383
13:01-14:00, Sun., 08 Feb. 0.0435 0.0377 0.0400
12:01-13:00, Sun., 08 Feb. 0.0443 0.0391 0.0414
11:01-12:00, Sun., 08 Feb. 0.0446 0.0402 0.0423
10:01-11:00, Sun., 08 Feb. 0.0437 0.0383 0.0414
09:01-10:00, Sun., 08 Feb. 0.0433 0.0377 0.0411
08:01-09:00, Sun., 08 Feb. 0.0436 0.0382 0.0412
07:01-08:00, Sun., 08 Feb. 0.0469 0.0392 0.0429
06:01-07:00, Sun., 08 Feb. 0.0455 0.0409 0.0436
05:01-06:00, Sun., 08 Feb. 0.0446 0.0391 0.0419
04:01-05:00, Sun., 08 Feb. 0.0468 0.0414 0.0444
03:01-04:00, Sun., 08 Feb. 0.0472 0.0398 0.0424
02:01-03:00, Sun., 08 Feb. 0.0451 0.0392 0.0415
01:01-02:00, Sun., 08 Feb. 0.0429 0.0382 0.0403
00:01-01:00, Sun., 08 Feb. 0.0432 0.0384 0.0401
23:01-24:00, Sat., 07 Feb. 0.0436 0.0383 0.0407
22:01-23:00, Sat., 07 Feb. 0.0444 0.0402 0.0420
21:01-22:00, Sat., 07 Feb. 0.0443 0.0390 0.0419
20:01-21:00, Sat., 07 Feb. 0.0419 0.0370 0.0399
19:01-20:00, Sat., 07 Feb. 0.0420 0.0366 0.0396
18:01-19:00, Sat., 07 Feb. 0.0419 0.0367 0.0394
17:01-18:00, Sat., 07 Feb. 0.0426 0.0380 0.0402
16:01-17:00, Sat., 07 Feb. 0.0466 0.0405 0.0427
15:01-16:00, Sat., 07 Feb. 0.0496 0.0423 0.0457
14:01-15:00, Sat., 07 Feb. 0.0455 0.0392 0.0427
13:01-14:00, Sat., 07 Feb. 0.0460 0.0401 0.0431
12:01-13:00, Sat., 07 Feb. 0.0428 0.0387 0.0407
11:01-12:00, Sat., 07 Feb. 0.0419 0.0369 0.0402
10:01-11:00, Sat., 07 Feb. 0.0423 0.0382 0.0404
09:01-10:00, Sat., 07 Feb. 0.0436 0.0375 0.0404
08:01-09:00, Sat., 07 Feb. 0.0418 0.0370 0.0396
07:01-08:00, Sat., 07 Feb. 0.0419 0.0377 0.0396
06:01-07:00, Sat., 07 Feb. 0.0419 0.0370 0.0394
05:01-06:00, Sat., 07 Feb. 0.0412 0.0374 0.0395
04:01-05:00, Sat., 07 Feb. 0.0425 0.0372 0.0396
03:01-04:00, Sat., 07 Feb. 0.0415 0.0378 0.0397
02:01-03:00, Sat., 07 Feb. 0.0418 0.0375 0.0396
01:01-02:00, Sat., 07 Feb. 0.0419 0.0371 0.0392
00:01-01:00, Sat., 07 Feb. 0.0421 0.0371 0.0393
23:01-24:00, Fri., 06 Feb. 0.0422 0.0373 0.0393
22:01-23:00, Fri., 06 Feb. 0.0426 0.0363 0.0398
21:01-22:00, Fri., 06 Feb. 0.0420 0.0381 0.0398
20:01-21:00, Fri., 06 Feb. 0.0413 0.0372 0.0392
19:01-20:00, Fri., 06 Feb. 0.0411 0.0372 0.0391
18:01-19:00, Fri., 06 Feb. 0.0419 0.0367 0.0386
17:01-18:00, Fri., 06 Feb. 0.0405 0.0370 0.0386
16:01-17:00, Fri., 06 Feb. 0.0416 0.0366 0.0390
15:01-16:00, Fri., 06 Feb. 0.0416 0.0370 0.0394
14:01-15:00, Fri., 06 Feb. 0.0413 0.0373 0.0392
13:01-14:00, Fri., 06 Feb. 0.0415 0.0370 0.0396
12:01-13:00, Fri., 06 Feb. 0.0426 0.0377 0.0398
11:01-12:00, Fri., 06 Feb. 0.0419 0.0378 0.0399
10:01-11:00, Fri., 06 Feb. 0.0426 0.0383 0.0405
09:01-10:00, Fri., 06 Feb. 0.0443 0.0383 0.0408
08:01-09:00, Fri., 06 Feb. 0.0437 0.0389 0.0409
07:01-08:00, Fri., 06 Feb. 0.0426 0.0383 0.0405
06:01-07:00, Fri., 06 Feb. 0.0429 0.0378 0.0409
05:01-06:00, Fri., 06 Feb. 0.0429 0.0370 0.0402
04:01-05:00, Fri., 06 Feb. 0.0422 0.0382 0.0402
03:01-04:00, Fri., 06 Feb. 0.0421 0.0375 0.0400
02:01-03:00, Fri., 06 Feb. 0.0430 0.0371 0.0400
01:01-02:00, Fri., 06 Feb. 0.0433 0.0370 0.0400
00:01-01:00, Fri., 06 Feb. 0.0426 0.0367 0.0396
23:01-24:00, Thu., 05 Feb. 0.0427 0.0373 0.0393
22:01-23:00, Thu., 05 Feb. 0.0409 0.0370 0.0389
21:01-22:00, Thu., 05 Feb. 0.0415 0.0362 0.0391
20:01-21:00, Thu., 05 Feb. 0.0421 0.0364 0.0390
19:01-20:00, Thu., 05 Feb. 0.0408 0.0365 0.0388
18:01-19:00, Thu., 05 Feb. 0.0409 0.0372 0.0388
17:01-18:00, Thu., 05 Feb. 0.0405 0.0362 0.0385
16:01-17:00, Thu., 05 Feb. 0.0401 0.0359 0.0381
15:01-16:00, Thu., 05 Feb. 0.0407 0.0363 0.0386
14:01-15:00, Thu., 05 Feb. 0.0415 0.0366 0.0386
13:01-14:00, Thu., 05 Feb. 0.0417 0.0366 0.0390
12:01-13:00, Thu., 05 Feb. 0.0416 0.0363 0.0389
11:01-12:00, Thu., 05 Feb. 0.0416 0.0366 0.0392
10:01-11:00, Thu., 05 Feb. 0.0423 0.0377 0.0399
09:01-10:00, Thu., 05 Feb. 0.0429 0.0381 0.0399
08:01-09:00, Thu., 05 Feb. 0.0437 0.0376 0.0401
07:01-08:00, Thu., 05 Feb. 0.0429 0.0376 0.0403
06:01-07:00, Thu., 05 Feb. 0.0430 0.0385 0.0406
05:01-06:00, Thu., 05 Feb. 0.0429 0.0372 0.0402
04:01-05:00, Thu., 05 Feb. 0.0423 0.0385 0.0403
03:01-04:00, Thu., 05 Feb. 0.0429 0.0370 0.0395
02:01-03:00, Thu., 05 Feb. 0.0421 0.0374 0.0394
01:01-02:00, Thu., 05 Feb. 0.0425 0.0374 0.0395
00:01-01:00, Thu., 05 Feb. 0.0412 0.0363 0.0392
23:01-24:00, Wed., 04 Feb. 0.0416 0.0371 0.0392
22:01-23:00, Wed., 04 Feb. 0.0412 0.0371 0.0391
21:01-22:00, Wed., 04 Feb. 0.0411 0.0365 0.0389
20:01-21:00, Wed., 04 Feb. 0.0414 0.0365 0.0390
19:01-20:00, Wed., 04 Feb. 0.0412 0.0365 0.0389
18:01-19:00, Wed., 04 Feb. 0.0411 0.0363 0.0388
17:01-18:00, Wed., 04 Feb. 0.0413 0.0364 0.0387
16:01-17:00, Wed., 04 Feb. 0.0405 0.0363 0.0386
15:01-16:00, Wed., 04 Feb. 0.0408 0.0364 0.0386
14:01-15:00, Wed., 04 Feb. 0.0405 0.0363 0.0388
13:01-14:00, Wed., 04 Feb. 0.0412 0.0357 0.0387
12:01-13:00, Wed., 04 Feb. 0.0412 0.0372 0.0387
11:01-12:00, Wed., 04 Feb. 0.0419 0.0360 0.0395
10:01-11:00, Wed., 04 Feb. 0.0419 0.0371 0.0395
09:01-10:00, Wed., 04 Feb. 0.0422 0.0377 0.0398
08:01-09:00, Wed., 04 Feb. 0.0419 0.0377 0.0399
07:01-08:00, Wed., 04 Feb. 0.0425 0.0376 0.0402
06:01-07:00, Wed., 04 Feb. 0.0422 0.0378 0.0402
05:01-06:00, Wed., 04 Feb. 0.0423 0.0369 0.0402
04:01-05:00, Wed., 04 Feb. 0.0421 0.0381 0.0400
03:01-04:00, Wed., 04 Feb. 0.0416 0.0369 0.0394
02:01-03:00, Wed., 04 Feb. 0.0418 0.0368 0.0391
01:01-02:00, Wed., 04 Feb. 0.0416 0.0346 0.0389
00:01-01:00, Wed., 04 Feb. 0.0416 0.0367 0.0389
23:01-24:00, Tue., 03 Feb. 0.0415 0.0361 0.0389
22:01-23:00, Tue., 03 Feb. 0.0408 0.0365 0.0386
21:01-22:00, Tue., 03 Feb. 0.0412 0.0367 0.0389
20:01-21:00, Tue., 03 Feb. 0.0409 0.0358 0.0385