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
21:01-22:00, Fri., 06 Mar. 0.0381 0.0339 0.0365
20:01-21:00, Fri., 06 Mar. 0.0385 0.0343 0.0363
19:01-20:00, Fri., 06 Mar. 0.0392 0.0346 0.0366
18:01-19:00, Fri., 06 Mar. 0.0388 0.0343 0.0365
17:01-18:00, Fri., 06 Mar. 0.0389 0.0336 0.0365
16:01-17:00, Fri., 06 Mar. 0.0391 0.0346 0.0366
15:01-16:00, Fri., 06 Mar. 0.0388 0.0346 0.0365
14:01-15:00, Fri., 06 Mar. 0.0390 0.0346 0.0369
13:01-14:00, Fri., 06 Mar. 0.0387 0.0348 0.0368
12:01-13:00, Fri., 06 Mar. 0.0398 0.0353 0.0370
11:01-12:00, Fri., 06 Mar. 0.0392 0.0349 0.0372
10:01-11:00, Fri., 06 Mar. 0.0398 0.0349 0.0372
09:01-10:00, Fri., 06 Mar. 0.0398 0.0355 0.0375
08:01-09:00, Fri., 06 Mar. 0.0393 0.0352 0.0374
07:01-08:00, Fri., 06 Mar. 0.0390 0.0349 0.0371
06:01-07:00, Fri., 06 Mar. 0.0391 0.0346 0.0370
05:01-06:00, Fri., 06 Mar. 0.0403 0.0339 0.0368
04:01-05:00, Fri., 06 Mar. 0.0388 0.0345 0.0365
03:01-04:00, Fri., 06 Mar. 0.0386 0.0345 0.0368
02:01-03:00, Fri., 06 Mar. 0.0383 0.0343 0.0365
01:01-02:00, Fri., 06 Mar. 0.0388 0.0345 0.0364
00:01-01:00, Fri., 06 Mar. 0.0404 0.0345 0.0365
23:01-24:00, Thu., 05 Mar. 0.0395 0.0345 0.0368
22:01-23:00, Thu., 05 Mar. 0.0394 0.0338 0.0367
21:01-22:00, Thu., 05 Mar. 0.0387 0.0348 0.0366
20:01-21:00, Thu., 05 Mar. 0.0389 0.0332 0.0366
19:01-20:00, Thu., 05 Mar. 0.0391 0.0342 0.0366
18:01-19:00, Thu., 05 Mar. 0.0382 0.0339 0.0362
17:01-18:00, Thu., 05 Mar. 0.0392 0.0339 0.0366
16:01-17:00, Thu., 05 Mar. 0.0383 0.0347 0.0363
15:01-16:00, Thu., 05 Mar. 0.0395 0.0345 0.0369
14:01-15:00, Thu., 05 Mar. 0.0395 0.0339 0.0372
13:01-14:00, Thu., 05 Mar. 0.0400 0.0346 0.0369
12:01-13:00, Thu., 05 Mar. 0.0388 0.0345 0.0366
11:01-12:00, Thu., 05 Mar. 0.0388 0.0339 0.0367
10:01-11:00, Thu., 05 Mar. 0.0392 0.0343 0.0369
09:01-10:00, Thu., 05 Mar. 0.0397 0.0353 0.0373
08:01-09:00, Thu., 05 Mar. 0.0408 0.0361 0.0374
07:01-08:00, Thu., 05 Mar. 0.0404 0.0345 0.0371
06:01-07:00, Thu., 05 Mar. 0.0398 0.0349 0.0369
05:01-06:00, Thu., 05 Mar. 0.0398 0.0351 0.0371
04:01-05:00, Thu., 05 Mar. 0.0391 0.0344 0.0372
03:01-04:00, Thu., 05 Mar. 0.0395 0.0352 0.0372
02:01-03:00, Thu., 05 Mar. 0.0399 0.0349 0.0370
01:01-02:00, Thu., 05 Mar. 0.0389 0.0353 0.0370
00:01-01:00, Thu., 05 Mar. 0.0391 0.0344 0.0368
23:01-24:00, Wed., 04 Mar. 0.0401 0.0336 0.0368
22:01-23:00, Wed., 04 Mar. 0.0404 0.0345 0.0370
21:01-22:00, Wed., 04 Mar. 0.0385 0.0346 0.0369
20:01-21:00, Wed., 04 Mar. 0.0390 0.0346 0.0369
19:01-20:00, Wed., 04 Mar. 0.0382 0.0341 0.0364
18:01-19:00, Wed., 04 Mar. 0.0389 0.0346 0.0367
17:01-18:00, Wed., 04 Mar. 0.0386 0.0338 0.0365
16:01-17:00, Wed., 04 Mar. 0.0384 0.0350 0.0363
15:01-16:00, Wed., 04 Mar. 0.0388 0.0341 0.0365
14:01-15:00, Wed., 04 Mar. 0.0384 0.0341 0.0362
13:01-14:00, Wed., 04 Mar. 0.0391 0.0352 0.0366
12:01-13:00, Wed., 04 Mar. 0.0399 0.0347 0.0371
11:01-12:00, Wed., 04 Mar. 0.0397 0.0356 0.0374
10:01-11:00, Wed., 04 Mar. 0.0409 0.0361 0.0384
09:01-10:00, Wed., 04 Mar. 0.0440 0.0383 0.0406
08:01-09:00, Wed., 04 Mar. 0.0437 0.0371 0.0400
07:01-08:00, Wed., 04 Mar. 0.0426 0.0359 0.0391
06:01-07:00, Wed., 04 Mar. 0.0474 0.0388 0.0435
05:01-06:00, Wed., 04 Mar. 0.0556 0.0459 0.0501
04:01-05:00, Wed., 04 Mar. 0.0566 0.0503 0.0534
03:01-04:00, Wed., 04 Mar. 0.0600 0.0521 0.0561
02:01-03:00, Wed., 04 Mar. 0.0603 0.0536 0.0570
01:01-02:00, Wed., 04 Mar. 0.0609 0.0555 0.0576
00:01-01:00, Wed., 04 Mar. 0.0597 0.0476 0.0539
23:01-24:00, Tue., 03 Mar. 0.0526 0.0431 0.0471
22:01-23:00, Tue., 03 Mar. 0.0596 0.0506 0.0562
21:01-22:00, Tue., 03 Mar. 0.0565 0.0447 0.0512
20:01-21:00, Tue., 03 Mar. 0.0531 0.0457 0.0496
19:01-20:00, Tue., 03 Mar. 0.0544 0.0473 0.0511
18:01-19:00, Tue., 03 Mar. 0.0531 0.0462 0.0501
17:01-18:00, Tue., 03 Mar. 0.0541 0.0479 0.0517
16:01-17:00, Tue., 03 Mar. 0.0505 0.0412 0.0450
15:01-16:00, Tue., 03 Mar. 0.0459 0.0407 0.0430
14:01-15:00, Tue., 03 Mar. 0.0502 0.0429 0.0471
13:01-14:00, Tue., 03 Mar. 0.0516 0.0453 0.0485
12:01-13:00, Tue., 03 Mar. 0.0503 0.0450 0.0473
11:01-12:00, Tue., 03 Mar. 0.0498 0.0436 0.0464
10:01-11:00, Tue., 03 Mar. 0.0482 0.0430 0.0455
09:01-10:00, Tue., 03 Mar. 0.0473 0.0426 0.0453
08:01-09:00, Tue., 03 Mar. 0.0460 0.0410 0.0433
07:01-08:00, Tue., 03 Mar. 0.0450 0.0391 0.0422
06:01-07:00, Tue., 03 Mar. 0.0432 0.0377 0.0404
05:01-06:00, Tue., 03 Mar. 0.0429 0.0361 0.0399
04:01-05:00, Tue., 03 Mar. 0.0399 0.0346 0.0373
03:01-04:00, Tue., 03 Mar. 0.0400 0.0358 0.0376
02:01-03:00, Tue., 03 Mar. 0.0395 0.0350 0.0372
01:01-02:00, Tue., 03 Mar. 0.0405 0.0354 0.0375
00:01-01:00, Tue., 03 Mar. 0.0387 0.0351 0.0372
23:01-24:00, Mon., 02 Mar. 0.0388 0.0345 0.0366
22:01-23:00, Mon., 02 Mar. 0.0382 0.0345 0.0366
21:01-22:00, Mon., 02 Mar. 0.0384 0.0345 0.0367
20:01-21:00, Mon., 02 Mar. 0.0394 0.0346 0.0367
19:01-20:00, Mon., 02 Mar. 0.0382 0.0347 0.0367
18:01-19:00, Mon., 02 Mar. 0.0385 0.0336 0.0366
17:01-18:00, Mon., 02 Mar. 0.0388 0.0346 0.0367
16:01-17:00, Mon., 02 Mar. 0.0398 0.0344 0.0370
15:01-16:00, Mon., 02 Mar. 0.0400 0.0349 0.0372
14:01-15:00, Mon., 02 Mar. 0.0391 0.0353 0.0373
13:01-14:00, Mon., 02 Mar. 0.0397 0.0356 0.0374
12:01-13:00, Mon., 02 Mar. 0.0397 0.0358 0.0373
11:01-12:00, Mon., 02 Mar. 0.0402 0.0361 0.0381
10:01-11:00, Mon., 02 Mar. 0.0408 0.0357 0.0384
09:01-10:00, Mon., 02 Mar. 0.0404 0.0361 0.0383
08:01-09:00, Mon., 02 Mar. 0.0398 0.0367 0.0382
07:01-08:00, Mon., 02 Mar. 0.0401 0.0361 0.0384
06:01-07:00, Mon., 02 Mar. 0.0403 0.0353 0.0380
05:01-06:00, Mon., 02 Mar. 0.0402 0.0358 0.0382
04:01-05:00, Mon., 02 Mar. 0.0394 0.0354 0.0377
03:01-04:00, Mon., 02 Mar. 0.0394 0.0349 0.0371
02:01-03:00, Mon., 02 Mar. 0.0402 0.0345 0.0376
01:01-02:00, Mon., 02 Mar. 0.0398 0.0356 0.0374
00:01-01:00, Mon., 02 Mar. 0.0393 0.0350 0.0373
23:01-24:00, Sun., 01 Mar. 0.0399 0.0353 0.0372
22:01-23:00, Sun., 01 Mar. 0.0388 0.0344 0.0369
21:01-22:00, Sun., 01 Mar. 0.0390 0.0345 0.0367
20:01-21:00, Sun., 01 Mar. 0.0394 0.0336 0.0369
19:01-20:00, Sun., 01 Mar. 0.0391 0.0346 0.0370
18:01-19:00, Sun., 01 Mar. 0.0391 0.0350 0.0367
17:01-18:00, Sun., 01 Mar. 0.0405 0.0343 0.0372
16:01-17:00, Sun., 01 Mar. 0.0391 0.0346 0.0368
15:01-16:00, Sun., 01 Mar. 0.0391 0.0343 0.0371
14:01-15:00, Sun., 01 Mar. 0.0395 0.0347 0.0372
13:01-14:00, Sun., 01 Mar. 0.0395 0.0351 0.0372
12:01-13:00, Sun., 01 Mar. 0.0390 0.0343 0.0370
11:01-12:00, Sun., 01 Mar. 0.0391 0.0351 0.0370
10:01-11:00, Sun., 01 Mar. 0.0393 0.0346 0.0366
09:01-10:00, Sun., 01 Mar. 0.0386 0.0346 0.0365
08:01-09:00, Sun., 01 Mar. 0.0399 0.0345 0.0370
07:01-08:00, Sun., 01 Mar. 0.0398 0.0350 0.0373
06:01-07:00, Sun., 01 Mar. 0.0398 0.0349 0.0372
05:01-06:00, Sun., 01 Mar. 0.0395 0.0349 0.0372
04:01-05:00, Sun., 01 Mar. 0.0392 0.0345 0.0371
03:01-04:00, Sun., 01 Mar. 0.0393 0.0343 0.0370
02:01-03:00, Sun., 01 Mar. 0.0388 0.0351 0.0369
01:01-02:00, Sun., 01 Mar. 0.0395 0.0351 0.0373
00:01-01:00, Sun., 01 Mar. 0.0394 0.0349 0.0370
23:01-24:00, Sat., 28 Feb. 0.0390 0.0349 0.0371
22:01-23:00, Sat., 28 Feb. 0.0388 0.0349 0.0369
21:01-22:00, Sat., 28 Feb. 0.0388 0.0345 0.0364
20:01-21:00, Sat., 28 Feb. 0.0386 0.0335 0.0367
19:01-20:00, Sat., 28 Feb. 0.0388 0.0346 0.0366
18:01-19:00, Sat., 28 Feb. 0.0401 0.0354 0.0368
17:01-18:00, Sat., 28 Feb. 0.0385 0.0349 0.0368
16:01-17:00, Sat., 28 Feb. 0.0390 0.0345 0.0369
15:01-16:00, Sat., 28 Feb. 0.0402 0.0352 0.0372
14:01-15:00, Sat., 28 Feb. 0.0401 0.0347 0.0370
13:01-14:00, Sat., 28 Feb. 0.0402 0.0348 0.0372
12:01-13:00, Sat., 28 Feb. 0.0392 0.0332 0.0356
11:01-12:00, Sat., 28 Feb. 0.0377 0.0337 0.0357
10:01-11:00, Sat., 28 Feb. 0.0388 0.0340 0.0363
09:01-10:00, Sat., 28 Feb. 0.0388 0.0340 0.0370
08:01-09:00, Sat., 28 Feb. 0.0394 0.0354 0.0372
07:01-08:00, Sat., 28 Feb. 0.0395 0.0352 0.0373
06:01-07:00, Sat., 28 Feb. 0.0397 0.0347 0.0375
05:01-06:00, Sat., 28 Feb. 0.0388 0.0351 0.0371
04:01-05:00, Sat., 28 Feb. 0.0398 0.0346 0.0368
03:01-04:00, Sat., 28 Feb. 0.0386 0.0342 0.0366
02:01-03:00, Sat., 28 Feb. 0.0385 0.0344 0.0364
01:01-02:00, Sat., 28 Feb. 0.0391 0.0344 0.0364
00:01-01:00, Sat., 28 Feb. 0.0379 0.0341 0.0361
23:01-24:00, Fri., 27 Feb. 0.0380 0.0342 0.0362
22:01-23:00, Fri., 27 Feb. 0.0384 0.0344 0.0363
21:01-22:00, Fri., 27 Feb. 0.0383 0.0337 0.0363
20:01-21:00, Fri., 27 Feb. 0.0381 0.0344 0.0364
19:01-20:00, Fri., 27 Feb. 0.0395 0.0345 0.0366
18:01-19:00, Fri., 27 Feb. 0.0382 0.0331 0.0367
17:01-18:00, Fri., 27 Feb. 0.0387 0.0345 0.0366
16:01-17:00, Fri., 27 Feb. 0.0398 0.0346 0.0370
15:01-16:00, Fri., 27 Feb. 0.0394 0.0348 0.0370
14:01-15:00, Fri., 27 Feb. 0.0402 0.0346 0.0372
13:01-14:00, Fri., 27 Feb. 0.0393 0.0353 0.0371
12:01-13:00, Fri., 27 Feb. 0.0391 0.0349 0.0367
11:01-12:00, Fri., 27 Feb. 0.0391 0.0339 0.0366
10:01-11:00, Fri., 27 Feb. 0.0390 0.0343 0.0367
09:01-10:00, Fri., 27 Feb. 0.0391 0.0352 0.0367
08:01-09:00, Fri., 27 Feb. 0.0385 0.0346 0.0368
07:01-08:00, Fri., 27 Feb. 0.0402 0.0351 0.0369
06:01-07:00, Fri., 27 Feb. 0.0385 0.0349 0.0368
05:01-06:00, Fri., 27 Feb. 0.0398 0.0337 0.0367
04:01-05:00, Fri., 27 Feb. 0.0391 0.0347 0.0367
03:01-04:00, Fri., 27 Feb. 0.0397 0.0346 0.0370
02:01-03:00, Fri., 27 Feb. 0.0403 0.0346 0.0369
01:01-02:00, Fri., 27 Feb. 0.0398 0.0349 0.0368
00:01-01:00, Fri., 27 Feb. 0.0389 0.0353 0.0369
23:01-24:00, Thu., 26 Feb. 0.0390 0.0341 0.0369
22:01-23:00, Thu., 26 Feb. 0.0388 0.0343 0.0368
21:01-22:00, Thu., 26 Feb. 0.0398 0.0346 0.0370
20:01-21:00, Thu., 26 Feb. 0.0402 0.0346 0.0370
19:01-20:00, Thu., 26 Feb. 0.0389 0.0345 0.0369
18:01-19:00, Thu., 26 Feb. 0.0392 0.0348 0.0369
17:01-18:00, Thu., 26 Feb. 0.0397 0.0351 0.0370
16:01-17:00, Thu., 26 Feb. 0.0395 0.0344 0.0368
15:01-16:00, Thu., 26 Feb. 0.0386 0.0347 0.0367
14:01-15:00, Thu., 26 Feb. 0.0398 0.0346 0.0367
13:01-14:00, Thu., 26 Feb. 0.0391 0.0341 0.0365
12:01-13:00, Thu., 26 Feb. 0.0393 0.0348 0.0369
11:01-12:00, Thu., 26 Feb. 0.0395 0.0337 0.0367
10:01-11:00, Thu., 26 Feb. 0.0388 0.0345 0.0366
09:01-10:00, Thu., 26 Feb. 0.0386 0.0343 0.0366
08:01-09:00, Thu., 26 Feb. 0.0384 0.0344 0.0367
07:01-08:00, Thu., 26 Feb. 0.0384 0.0349 0.0368
06:01-07:00, Thu., 26 Feb. 0.0386 0.0339 0.0366
05:01-06:00, Thu., 26 Feb. 0.0392 0.0349 0.0372
04:01-05:00, Thu., 26 Feb. 0.0406 0.0353 0.0380
03:01-04:00, Thu., 26 Feb. 0.0447 0.0381 0.0408
02:01-03:00, Thu., 26 Feb. 0.0457 0.0398 0.0425
01:01-02:00, Thu., 26 Feb. 0.0447 0.0389 0.0421
00:01-01:00, Thu., 26 Feb. 0.0447 0.0405 0.0427
23:01-24:00, Wed., 25 Feb. 0.0446 0.0397 0.0422
22:01-23:00, Wed., 25 Feb. 0.0475 0.0418 0.0441
21:01-22:00, Wed., 25 Feb. 0.0462 0.0412 0.0441
20:01-21:00, Wed., 25 Feb. 0.0456 0.0415 0.0434
19:01-20:00, Wed., 25 Feb. 0.0452 0.0404 0.0425
18:01-19:00, Wed., 25 Feb. 0.0442 0.0388 0.0416
17:01-18:00, Wed., 25 Feb. 0.0427 0.0379 0.0405
16:01-17:00, Wed., 25 Feb. 0.0476 0.0408 0.0443
15:01-16:00, Wed., 25 Feb. 0.0484 0.0419 0.0452
14:01-15:00, Wed., 25 Feb. 0.0489 0.0435 0.0460
13:01-14:00, Wed., 25 Feb. 0.0499 0.0437 0.0475
12:01-13:00, Wed., 25 Feb. 0.0498 0.0440 0.0466
11:01-12:00, Wed., 25 Feb. 0.0483 0.0387 0.0436
10:01-11:00, Wed., 25 Feb. 0.0443 0.0391 0.0419
09:01-10:00, Wed., 25 Feb. 0.0451 0.0402 0.0426
08:01-09:00, Wed., 25 Feb. 0.0436 0.0382 0.0411
07:01-08:00, Wed., 25 Feb. 0.0443 0.0381 0.0405
06:01-07:00, Wed., 25 Feb. 0.0412 0.0362 0.0384
05:01-06:00, Wed., 25 Feb. 0.0401 0.0356 0.0379
04:01-05:00, Wed., 25 Feb. 0.0398 0.0356 0.0378
03:01-04:00, Wed., 25 Feb. 0.0409 0.0350 0.0379
02:01-03:00, Wed., 25 Feb. 0.0403 0.0354 0.0382
01:01-02:00, Wed., 25 Feb. 0.0408 0.0364 0.0390
00:01-01:00, Wed., 25 Feb. 0.0412 0.0353 0.0379
23:01-24:00, Tue., 24 Feb. 0.0400 0.0356 0.0374
22:01-23:00, Tue., 24 Feb. 0.0393 0.0348 0.0369