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
03:01-04:00, Sat., 07 Nov. 0.0396 0.0337 0.0368
02:01-03:00, Sat., 07 Nov. 0.0399 0.0347 0.0370
01:01-02:00, Sat., 07 Nov. 0.0396 0.0354 0.0372
00:01-01:00, Sat., 07 Nov. 0.0393 0.0343 0.0369
23:01-24:00, Fri., 06 Nov. 0.0389 0.0345 0.0367
22:01-23:00, Fri., 06 Nov. 0.0387 0.0337 0.0365
21:01-22:00, Fri., 06 Nov. 0.0385 0.0341 0.0367
20:01-21:00, Fri., 06 Nov. 0.0388 0.0347 0.0366
19:01-20:00, Fri., 06 Nov. 0.0390 0.0334 0.0367
18:01-19:00, Fri., 06 Nov. 0.0386 0.0345 0.0366
17:01-18:00, Fri., 06 Nov. 0.0391 0.0339 0.0366
16:01-17:00, Fri., 06 Nov. 0.0395 0.0344 0.0367
15:01-16:00, Fri., 06 Nov. 0.0395 0.0346 0.0368
14:01-15:00, Fri., 06 Nov. 0.0398 0.0354 0.0377
13:01-14:00, Fri., 06 Nov. 0.0400 0.0359 0.0375
12:01-13:00, Fri., 06 Nov. 0.0396 0.0355 0.0374
11:01-12:00, Fri., 06 Nov. 0.0398 0.0354 0.0376
10:01-11:00, Fri., 06 Nov. 0.0391 0.0353 0.0372
09:01-10:00, Fri., 06 Nov. 0.0398 0.0353 0.0372
08:01-09:00, Fri., 06 Nov. 0.0393 0.0339 0.0368
07:01-08:00, Fri., 06 Nov. 0.0389 0.0348 0.0368
06:01-07:00, Fri., 06 Nov. 0.0384 0.0345 0.0364
05:01-06:00, Fri., 06 Nov. 0.0382 0.0341 0.0365
04:01-05:00, Fri., 06 Nov. 0.0381 0.0342 0.0364
03:01-04:00, Fri., 06 Nov. 0.0387 0.0339 0.0364
02:01-03:00, Fri., 06 Nov. 0.0388 0.0344 0.0362
01:01-02:00, Fri., 06 Nov. 0.0378 0.0339 0.0361
00:01-01:00, Fri., 06 Nov. 0.0381 0.0344 0.0362
23:01-24:00, Thu., 05 Nov. 0.0389 0.0336 0.0361
22:01-23:00, Thu., 05 Nov. 0.0378 0.0344 0.0361
21:01-22:00, Thu., 05 Nov. 0.0384 0.0337 0.0359
20:01-21:00, Thu., 05 Nov. 0.0392 0.0334 0.0361
19:01-20:00, Thu., 05 Nov. 0.0379 0.0328 0.0358
18:01-19:00, Thu., 05 Nov. 0.0379 0.0336 0.0361
17:01-18:00, Thu., 05 Nov. 0.0377 0.0336 0.0356
16:01-17:00, Thu., 05 Nov. 0.0392 0.0338 0.0359
15:01-16:00, Thu., 05 Nov. 0.0392 0.0344 0.0364
14:01-15:00, Thu., 05 Nov. 0.0391 0.0351 0.0374
13:01-14:00, Thu., 05 Nov. 0.0409 0.0363 0.0389
12:01-13:00, Thu., 05 Nov. 0.0439 0.0377 0.0400
11:01-12:00, Thu., 05 Nov. 0.0429 0.0387 0.0405
10:01-11:00, Thu., 05 Nov. 0.0426 0.0367 0.0397
09:01-10:00, Thu., 05 Nov. 0.0398 0.0363 0.0383
08:01-09:00, Thu., 05 Nov. 0.0437 0.0365 0.0400
07:01-08:00, Thu., 05 Nov. 0.0534 0.0422 0.0470
06:01-07:00, Thu., 05 Nov. 0.0558 0.0471 0.0528
05:01-06:00, Thu., 05 Nov. 0.0567 0.0498 0.0532
04:01-05:00, Thu., 05 Nov. 0.0585 0.0516 0.0555
03:01-04:00, Thu., 05 Nov. 0.0592 0.0516 0.0553
02:01-03:00, Thu., 05 Nov. 0.0536 0.0450 0.0487
01:01-02:00, Thu., 05 Nov. 0.0581 0.0455 0.0522
00:01-01:00, Thu., 05 Nov. 0.0633 0.0544 0.0580
23:01-24:00, Wed., 04 Nov. 0.0621 0.0459 0.0516
22:01-23:00, Wed., 04 Nov. 0.0654 0.0516 0.0592
21:01-22:00, Wed., 04 Nov. 0.0706 0.0606 0.0648
20:01-21:00, Wed., 04 Nov. 0.0655 0.0499 0.0569
19:01-20:00, Wed., 04 Nov. 0.0582 0.0489 0.0542
18:01-19:00, Wed., 04 Nov. 0.0638 0.0535 0.0589
17:01-18:00, Wed., 04 Nov. 0.0615 0.0463 0.0561
16:01-17:00, Wed., 04 Nov. 0.0500 0.0429 0.0463
15:01-16:00, Wed., 04 Nov. 0.0550 0.0423 0.0484
14:01-15:00, Wed., 04 Nov. 0.0515 0.0412 0.0463
13:01-14:00, Wed., 04 Nov. 0.0450 0.0395 0.0423
12:01-13:00, Wed., 04 Nov. 0.0422 0.0347 0.0374
11:01-12:00, Wed., 04 Nov. 0.0393 0.0354 0.0371
10:01-11:00, Wed., 04 Nov. 0.0402 0.0349 0.0370
09:01-10:00, Wed., 04 Nov. 0.0394 0.0351 0.0369
08:01-09:00, Wed., 04 Nov. 0.0382 0.0340 0.0366
07:01-08:00, Wed., 04 Nov. 0.0394 0.0347 0.0371
06:01-07:00, Wed., 04 Nov. 0.0387 0.0349 0.0370
05:01-06:00, Wed., 04 Nov. 0.0398 0.0351 0.0367
04:01-05:00, Wed., 04 Nov. 0.0388 0.0345 0.0368
03:01-04:00, Wed., 04 Nov. 0.0388 0.0333 0.0367
02:01-03:00, Wed., 04 Nov. 0.0394 0.0342 0.0368
01:01-02:00, Wed., 04 Nov. 0.0391 0.0345 0.0368
00:01-01:00, Wed., 04 Nov. 0.0393 0.0343 0.0365
23:01-24:00, Tue., 03 Nov. 0.0401 0.0349 0.0370
22:01-23:00, Tue., 03 Nov. 0.0387 0.0350 0.0368
21:01-22:00, Tue., 03 Nov. 0.0388 0.0344 0.0365
20:01-21:00, Tue., 03 Nov. 0.0384 0.0347 0.0365
19:01-20:00, Tue., 03 Nov. 0.0386 0.0349 0.0366
18:01-19:00, Tue., 03 Nov. 0.0388 0.0343 0.0366
17:01-18:00, Tue., 03 Nov. 0.0381 0.0344 0.0363
16:01-17:00, Tue., 03 Nov. 0.0398 0.0346 0.0367
15:01-16:00, Tue., 03 Nov. 0.0413 0.0346 0.0372
14:01-15:00, Tue., 03 Nov. 0.0395 0.0343 0.0370
13:01-14:00, Tue., 03 Nov. 0.0394 0.0351 0.0370
12:01-13:00, Tue., 03 Nov. 0.0388 0.0352 0.0371
11:01-12:00, Tue., 03 Nov. 0.0386 0.0348 0.0366
10:01-11:00, Tue., 03 Nov. 0.0381 0.0342 0.0363
09:01-10:00, Tue., 03 Nov. 0.0389 0.0346 0.0362
08:01-09:00, Tue., 03 Nov. 0.0386 0.0343 0.0363
07:01-08:00, Tue., 03 Nov. 0.0384 0.0347 0.0367
06:01-07:00, Tue., 03 Nov. 0.0399 0.0342 0.0366
05:01-06:00, Tue., 03 Nov. 0.0397 0.0343 0.0366
04:01-05:00, Tue., 03 Nov. 0.0388 0.0343 0.0367
03:01-04:00, Tue., 03 Nov. 0.0384 0.0333 0.0363
02:01-03:00, Tue., 03 Nov. 0.0389 0.0336 0.0361
01:01-02:00, Tue., 03 Nov. 0.0383 0.0340 0.0360
00:01-01:00, Tue., 03 Nov. 0.0381 0.0334 0.0360
23:01-24:00, Mon., 02 Nov. 0.0384 0.0339 0.0360
22:01-23:00, Mon., 02 Nov. 0.0384 0.0345 0.0362
21:01-22:00, Mon., 02 Nov. 0.0388 0.0344 0.0366
20:01-21:00, Mon., 02 Nov. 0.0412 0.0358 0.0382
19:01-20:00, Mon., 02 Nov. 0.0529 0.0401 0.0457
18:01-19:00, Mon., 02 Nov. 0.0722 0.0513 0.0640
17:01-18:00, Mon., 02 Nov. 0.0772 0.0685 0.0730
16:01-17:00, Mon., 02 Nov. 0.0729 0.0523 0.0631
15:01-16:00, Mon., 02 Nov. 0.0608 0.0531 0.0561
14:01-15:00, Mon., 02 Nov. 0.0560 0.0475 0.0514
13:01-14:00, Mon., 02 Nov. 0.0523 0.0369 0.0450
12:01-13:00, Mon., 02 Nov. 0.0402 0.0360 0.0382
11:01-12:00, Mon., 02 Nov. 0.0403 0.0351 0.0379
10:01-11:00, Mon., 02 Nov. 0.0397 0.0350 0.0376
09:01-10:00, Mon., 02 Nov. 0.0395 0.0354 0.0380
08:01-09:00, Mon., 02 Nov. 0.0399 0.0357 0.0380
07:01-08:00, Mon., 02 Nov. 0.0393 0.0355 0.0377
06:01-07:00, Mon., 02 Nov. 0.0401 0.0355 0.0377
05:01-06:00, Mon., 02 Nov. 0.0409 0.0353 0.0380
04:01-05:00, Mon., 02 Nov. 0.0398 0.0362 0.0378
03:01-04:00, Mon., 02 Nov. 0.0402 0.0363 0.0380
02:01-03:00, Mon., 02 Nov. 0.0395 0.0349 0.0375
01:01-02:00, Mon., 02 Nov. 0.0397 0.0355 0.0375
00:01-01:00, Mon., 02 Nov. 0.0401 0.0354 0.0376
23:01-24:00, Sun., 01 Nov. 0.0402 0.0359 0.0377
22:01-23:00, Sun., 01 Nov. 0.0407 0.0349 0.0377
21:01-22:00, Sun., 01 Nov. 0.0402 0.0348 0.0376
20:01-21:00, Sun., 01 Nov. 0.0401 0.0353 0.0373
19:01-20:00, Sun., 01 Nov. 0.0394 0.0350 0.0374
18:01-19:00, Sun., 01 Nov. 0.0395 0.0355 0.0373
17:01-18:00, Sun., 01 Nov. 0.0396 0.0348 0.0373
16:01-17:00, Sun., 01 Nov. 0.0394 0.0349 0.0373
15:01-16:00, Sun., 01 Nov. 0.0399 0.0351 0.0374
14:01-15:00, Sun., 01 Nov. 0.0387 0.0340 0.0373
13:01-14:00, Sun., 01 Nov. 0.0411 0.0355 0.0376
12:01-13:00, Sun., 01 Nov. 0.0402 0.0346 0.0374
11:01-12:00, Sun., 01 Nov. 0.0407 0.0346 0.0376
10:01-11:00, Sun., 01 Nov. 0.0403 0.0353 0.0373
09:01-10:00, Sun., 01 Nov. 0.0394 0.0356 0.0375
08:01-09:00, Sun., 01 Nov. 0.0392 0.0338 0.0370
07:01-08:00, Sun., 01 Nov. 0.0393 0.0349 0.0371
06:01-07:00, Sun., 01 Nov. 0.0395 0.0354 0.0370
05:01-06:00, Sun., 01 Nov. 0.0395 0.0348 0.0371
04:01-05:00, Sun., 01 Nov. 0.0388 0.0336 0.0369
03:01-04:00, Sun., 01 Nov. 0.0404 0.0349 0.0371
02:01-03:00, Sun., 01 Nov. 0.0391 0.0349 0.0370
01:01-02:00, Sun., 01 Nov. 0.0395 0.0343 0.0370
00:01-01:00, Sun., 01 Nov. 0.0388 0.0338 0.0366
23:01-24:00, Sat., 31 Oct. 0.0402 0.0349 0.0369
22:01-23:00, Sat., 31 Oct. 0.0404 0.0343 0.0369
21:01-22:00, Sat., 31 Oct. 0.0395 0.0343 0.0370
20:01-21:00, Sat., 31 Oct. 0.0386 0.0346 0.0368
19:01-20:00, Sat., 31 Oct. 0.0391 0.0347 0.0370
18:01-19:00, Sat., 31 Oct. 0.0395 0.0349 0.0372
17:01-18:00, Sat., 31 Oct. 0.0389 0.0351 0.0369
16:01-17:00, Sat., 31 Oct. 0.0398 0.0347 0.0368
15:01-16:00, Sat., 31 Oct. 0.0389 0.0332 0.0370
14:01-15:00, Sat., 31 Oct. 0.0400 0.0343 0.0375
13:01-14:00, Sat., 31 Oct. 0.0401 0.0355 0.0378
12:01-13:00, Sat., 31 Oct. 0.0398 0.0351 0.0379
11:01-12:00, Sat., 31 Oct. 0.0402 0.0356 0.0381
10:01-11:00, Sat., 31 Oct. 0.0404 0.0363 0.0383
09:01-10:00, Sat., 31 Oct. 0.0419 0.0367 0.0386
08:01-09:00, Sat., 31 Oct. 0.0405 0.0360 0.0380
07:01-08:00, Sat., 31 Oct. 0.0401 0.0355 0.0380
06:01-07:00, Sat., 31 Oct. 0.0401 0.0354 0.0377
05:01-06:00, Sat., 31 Oct. 0.0405 0.0360 0.0381
04:01-05:00, Sat., 31 Oct. 0.0399 0.0356 0.0380
03:01-04:00, Sat., 31 Oct. 0.0409 0.0362 0.0382
02:01-03:00, Sat., 31 Oct. 0.0409 0.0356 0.0379
01:01-02:00, Sat., 31 Oct. 0.0412 0.0356 0.0383
00:01-01:00, Sat., 31 Oct. 0.0406 0.0348 0.0378
23:01-24:00, Fri., 30 Oct. 0.0401 0.0357 0.0378
22:01-23:00, Fri., 30 Oct. 0.0408 0.0353 0.0379
21:01-22:00, Fri., 30 Oct. 0.0395 0.0356 0.0380
20:01-21:00, Fri., 30 Oct. 0.0396 0.0349 0.0377
19:01-20:00, Fri., 30 Oct. 0.0391 0.0353 0.0374
18:01-19:00, Fri., 30 Oct. 0.0398 0.0353 0.0376
17:01-18:00, Fri., 30 Oct. 0.0412 0.0352 0.0374
16:01-17:00, Fri., 30 Oct. 0.0404 0.0346 0.0375
15:01-16:00, Fri., 30 Oct. 0.0394 0.0349 0.0373
14:01-15:00, Fri., 30 Oct. 0.0401 0.0347 0.0373
13:01-14:00, Fri., 30 Oct. 0.0395 0.0343 0.0371
12:01-13:00, Fri., 30 Oct. 0.0391 0.0352 0.0371
11:01-12:00, Fri., 30 Oct. 0.0397 0.0352 0.0371
10:01-11:00, Fri., 30 Oct. 0.0392 0.0353 0.0372
09:01-10:00, Fri., 30 Oct. 0.0402 0.0357 0.0375
08:01-09:00, Fri., 30 Oct. 0.0419 0.0360 0.0388
07:01-08:00, Fri., 30 Oct. 0.0504 0.0387 0.0441
06:01-07:00, Fri., 30 Oct. 0.0531 0.0401 0.0490
05:01-06:00, Fri., 30 Oct. 0.0449 0.0388 0.0421
04:01-05:00, Fri., 30 Oct. 0.0427 0.0367 0.0394
03:01-04:00, Fri., 30 Oct. 0.0426 0.0364 0.0390
02:01-03:00, Fri., 30 Oct. 0.0408 0.0353 0.0370
01:01-02:00, Fri., 30 Oct. 0.0389 0.0342 0.0366
00:01-01:00, Fri., 30 Oct. 0.0395 0.0348 0.0369
23:01-24:00, Thu., 29 Oct. 0.0388 0.0346 0.0370
22:01-23:00, Thu., 29 Oct. 0.0384 0.0349 0.0364
21:01-22:00, Thu., 29 Oct. 0.0384 0.0348 0.0365
20:01-21:00, Thu., 29 Oct. 0.0387 0.0339 0.0365
19:01-20:00, Thu., 29 Oct. 0.0391 0.0348 0.0367
18:01-19:00, Thu., 29 Oct. 0.0394 0.0344 0.0367
17:01-18:00, Thu., 29 Oct. 0.0383 0.0337 0.0366
16:01-17:00, Thu., 29 Oct. 0.0386 0.0343 0.0368
15:01-16:00, Thu., 29 Oct. 0.0391 0.0343 0.0371
14:01-15:00, Thu., 29 Oct. 0.0391 0.0351 0.0371
13:01-14:00, Thu., 29 Oct. 0.0406 0.0354 0.0370
12:01-13:00, Thu., 29 Oct. 0.0396 0.0356 0.0371
11:01-12:00, Thu., 29 Oct. 0.0391 0.0340 0.0370
10:01-11:00, Thu., 29 Oct. 0.0395 0.0343 0.0367
09:01-10:00, Thu., 29 Oct. 0.0391 0.0342 0.0362
08:01-09:00, Thu., 29 Oct. 0.0386 0.0339 0.0362
07:01-08:00, Thu., 29 Oct. 0.0382 0.0337 0.0363
06:01-07:00, Thu., 29 Oct. 0.0391 0.0341 0.0362
05:01-06:00, Thu., 29 Oct. 0.0394 0.0339 0.0358
04:01-05:00, Thu., 29 Oct. 0.0386 0.0336 0.0359
03:01-04:00, Thu., 29 Oct. 0.0382 0.0337 0.0360
02:01-03:00, Thu., 29 Oct. 0.0382 0.0338 0.0358
01:01-02:00, Thu., 29 Oct. 0.0386 0.0340 0.0360
00:01-01:00, Thu., 29 Oct. 0.0388 0.0338 0.0359
23:01-24:00, Wed., 28 Oct. 0.0381 0.0329 0.0359
22:01-23:00, Wed., 28 Oct. 0.0393 0.0343 0.0361
21:01-22:00, Wed., 28 Oct. 0.0378 0.0346 0.0363
20:01-21:00, Wed., 28 Oct. 0.0385 0.0337 0.0360
19:01-20:00, Wed., 28 Oct. 0.0391 0.0339 0.0360
18:01-19:00, Wed., 28 Oct. 0.0381 0.0336 0.0362
17:01-18:00, Wed., 28 Oct. 0.0382 0.0342 0.0363
16:01-17:00, Wed., 28 Oct. 0.0387 0.0344 0.0366
15:01-16:00, Wed., 28 Oct. 0.0384 0.0337 0.0365
14:01-15:00, Wed., 28 Oct. 0.0394 0.0347 0.0369
13:01-14:00, Wed., 28 Oct. 0.0393 0.0349 0.0371
12:01-13:00, Wed., 28 Oct. 0.0398 0.0348 0.0372
11:01-12:00, Wed., 28 Oct. 0.0395 0.0356 0.0376
10:01-11:00, Wed., 28 Oct. 0.0393 0.0353 0.0374
09:01-10:00, Wed., 28 Oct. 0.0401 0.0353 0.0373
08:01-09:00, Wed., 28 Oct. 0.0416 0.0352 0.0377
07:01-08:00, Wed., 28 Oct. 0.0408 0.0348 0.0374
06:01-07:00, Wed., 28 Oct. 0.0389 0.0356 0.0369
05:01-06:00, Wed., 28 Oct. 0.0388 0.0349 0.0368
04:01-05:00, Wed., 28 Oct. 0.0385 0.0343 0.0363