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
04:01-05:00, Fri., 21 Nov. 0.0416 0.0371 0.0392
03:01-04:00, Fri., 21 Nov. 0.0421 0.0371 0.0392
02:01-03:00, Fri., 21 Nov. 0.0411 0.0367 0.0389
01:01-02:00, Fri., 21 Nov. 0.0412 0.0365 0.0388
00:01-01:00, Fri., 21 Nov. 0.0410 0.0363 0.0387
23:01-24:00, Thu., 20 Nov. 0.0404 0.0352 0.0382
22:01-23:00, Thu., 20 Nov. 0.0408 0.0343 0.0380
21:01-22:00, Thu., 20 Nov. 0.0398 0.0363 0.0380
20:01-21:00, Thu., 20 Nov. 0.0406 0.0359 0.0381
19:01-20:00, Thu., 20 Nov. 0.0400 0.0352 0.0379
18:01-19:00, Thu., 20 Nov. 0.0400 0.0345 0.0378
17:01-18:00, Thu., 20 Nov. 0.0399 0.0352 0.0372
16:01-17:00, Thu., 20 Nov. 0.0399 0.0360 0.0376
15:01-16:00, Thu., 20 Nov. 0.0401 0.0362 0.0378
14:01-15:00, Thu., 20 Nov. 0.0396 0.0352 0.0377
13:01-14:00, Thu., 20 Nov. 0.0404 0.0362 0.0382
12:01-13:00, Thu., 20 Nov. 0.0425 0.0363 0.0385
11:01-12:00, Thu., 20 Nov. 0.0405 0.0357 0.0382
10:01-11:00, Thu., 20 Nov. 0.0410 0.0366 0.0390
09:01-10:00, Thu., 20 Nov. 0.0421 0.0373 0.0390
08:01-09:00, Thu., 20 Nov. 0.0410 0.0373 0.0392
07:01-08:00, Thu., 20 Nov. 0.0424 0.0360 0.0395
06:01-07:00, Thu., 20 Nov. 0.0430 0.0376 0.0397
05:01-06:00, Thu., 20 Nov. 0.0446 0.0396 0.0416
04:01-05:00, Thu., 20 Nov. 0.0440 0.0363 0.0407
03:01-04:00, Thu., 20 Nov. 0.0409 0.0364 0.0388
02:01-03:00, Thu., 20 Nov. 0.0414 0.0356 0.0386
01:01-02:00, Thu., 20 Nov. 0.0406 0.0358 0.0387
00:01-01:00, Thu., 20 Nov. 0.0401 0.0352 0.0381
23:01-24:00, Wed., 19 Nov. 0.0415 0.0351 0.0381
22:01-23:00, Wed., 19 Nov. 0.0398 0.0353 0.0378
21:01-22:00, Wed., 19 Nov. 0.0404 0.0360 0.0381
20:01-21:00, Wed., 19 Nov. 0.0398 0.0351 0.0375
19:01-20:00, Wed., 19 Nov. 0.0399 0.0355 0.0375
18:01-19:00, Wed., 19 Nov. 0.0396 0.0341 0.0374
17:01-18:00, Wed., 19 Nov. 0.0405 0.0350 0.0372
16:01-17:00, Wed., 19 Nov. 0.0391 0.0346 0.0371
15:01-16:00, Wed., 19 Nov. 0.0398 0.0356 0.0374
14:01-15:00, Wed., 19 Nov. 0.0402 0.0356 0.0376
13:01-14:00, Wed., 19 Nov. 0.0401 0.0359 0.0381
12:01-13:00, Wed., 19 Nov. 0.0397 0.0360 0.0379
11:01-12:00, Wed., 19 Nov. 0.0414 0.0349 0.0377
10:01-11:00, Wed., 19 Nov. 0.0401 0.0354 0.0377
09:01-10:00, Wed., 19 Nov. 0.0411 0.0351 0.0380
08:01-09:00, Wed., 19 Nov. 0.0405 0.0365 0.0384
07:01-08:00, Wed., 19 Nov. 0.0401 0.0354 0.0381
06:01-07:00, Wed., 19 Nov. 0.0408 0.0363 0.0382
05:01-06:00, Wed., 19 Nov. 0.0405 0.0360 0.0380
04:01-05:00, Wed., 19 Nov. 0.0407 0.0361 0.0381
03:01-04:00, Wed., 19 Nov. 0.0405 0.0361 0.0381
02:01-03:00, Wed., 19 Nov. 0.0415 0.0360 0.0382
01:01-02:00, Wed., 19 Nov. 0.0402 0.0362 0.0383
00:01-01:00, Wed., 19 Nov. 0.0409 0.0353 0.0383
23:01-24:00, Tue., 18 Nov. 0.0403 0.0352 0.0382
22:01-23:00, Tue., 18 Nov. 0.0407 0.0367 0.0385
21:01-22:00, Tue., 18 Nov. 0.0403 0.0361 0.0384
20:01-21:00, Tue., 18 Nov. 0.0404 0.0362 0.0381
19:01-20:00, Tue., 18 Nov. 0.0420 0.0356 0.0387
18:01-19:00, Tue., 18 Nov. 0.0413 0.0361 0.0385
17:01-18:00, Tue., 18 Nov. 0.0423 0.0363 0.0394
16:01-17:00, Tue., 18 Nov. 0.0429 0.0372 0.0405
15:01-16:00, Tue., 18 Nov. 0.0457 0.0385 0.0418
14:01-15:00, Tue., 18 Nov. 0.0420 0.0371 0.0398
13:01-14:00, Tue., 18 Nov. 0.0426 0.0373 0.0392
12:01-13:00, Tue., 18 Nov. 0.0414 0.0366 0.0391
11:01-12:00, Tue., 18 Nov. 0.0409 0.0352 0.0392
10:01-11:00, Tue., 18 Nov. 0.0416 0.0366 0.0387
09:01-10:00, Tue., 18 Nov. 0.0403 0.0356 0.0384
08:01-09:00, Tue., 18 Nov. 0.0407 0.0363 0.0384
07:01-08:00, Tue., 18 Nov. 0.0401 0.0356 0.0380
06:01-07:00, Tue., 18 Nov. 0.0402 0.0360 0.0378
05:01-06:00, Tue., 18 Nov. 0.0396 0.0356 0.0374
04:01-05:00, Tue., 18 Nov. 0.0405 0.0349 0.0375
03:01-04:00, Tue., 18 Nov. 0.0399 0.0349 0.0379
02:01-03:00, Tue., 18 Nov. 0.0402 0.0363 0.0381
01:01-02:00, Tue., 18 Nov. 0.0405 0.0354 0.0379
00:01-01:00, Tue., 18 Nov. 0.0407 0.0353 0.0382
23:01-24:00, Mon., 17 Nov. 0.0404 0.0360 0.0383
22:01-23:00, Mon., 17 Nov. 0.0398 0.0363 0.0382
21:01-22:00, Mon., 17 Nov. 0.0403 0.0359 0.0379
20:01-21:00, Mon., 17 Nov. 0.0402 0.0362 0.0379
19:01-20:00, Mon., 17 Nov. 0.0407 0.0355 0.0375
18:01-19:00, Mon., 17 Nov. 0.0409 0.0336 0.0377
17:01-18:00, Mon., 17 Nov. 0.0397 0.0357 0.0377
16:01-17:00, Mon., 17 Nov. 0.0398 0.0357 0.0378
15:01-16:00, Mon., 17 Nov. 0.0405 0.0350 0.0380
14:01-15:00, Mon., 17 Nov. 0.0402 0.0355 0.0379
13:01-14:00, Mon., 17 Nov. 0.0405 0.0352 0.0378
12:01-13:00, Mon., 17 Nov. 0.0410 0.0363 0.0381
11:01-12:00, Mon., 17 Nov. 0.0409 0.0360 0.0380
10:01-11:00, Mon., 17 Nov. 0.0409 0.0361 0.0382
09:01-10:00, Mon., 17 Nov. 0.0411 0.0358 0.0381
08:01-09:00, Mon., 17 Nov. 0.0402 0.0348 0.0379
07:01-08:00, Mon., 17 Nov. 0.0405 0.0363 0.0384
06:01-07:00, Mon., 17 Nov. 0.0405 0.0360 0.0384
05:01-06:00, Mon., 17 Nov. 0.0399 0.0358 0.0380
04:01-05:00, Mon., 17 Nov. 0.0391 0.0346 0.0377
03:01-04:00, Mon., 17 Nov. 0.0401 0.0358 0.0377
02:01-03:00, Mon., 17 Nov. 0.0400 0.0361 0.0378
01:01-02:00, Mon., 17 Nov. 0.0395 0.0350 0.0375
00:01-01:00, Mon., 17 Nov. 0.0392 0.0343 0.0372
23:01-24:00, Sun., 16 Nov. 0.0385 0.0351 0.0372
22:01-23:00, Sun., 16 Nov. 0.0397 0.0356 0.0372
21:01-22:00, Sun., 16 Nov. 0.0394 0.0356 0.0373
20:01-21:00, Sun., 16 Nov. 0.0395 0.0348 0.0370
19:01-20:00, Sun., 16 Nov. 0.0404 0.0349 0.0372
18:01-19:00, Sun., 16 Nov. 0.0399 0.0339 0.0372
17:01-18:00, Sun., 16 Nov. 0.0397 0.0347 0.0372
16:01-17:00, Sun., 16 Nov. 0.0398 0.0353 0.0375
15:01-16:00, Sun., 16 Nov. 0.0401 0.0357 0.0378
14:01-15:00, Sun., 16 Nov. 0.0405 0.0356 0.0377
13:01-14:00, Sun., 16 Nov. 0.0398 0.0353 0.0375
12:01-13:00, Sun., 16 Nov. 0.0394 0.0344 0.0371
11:01-12:00, Sun., 16 Nov. 0.0388 0.0341 0.0373
10:01-11:00, Sun., 16 Nov. 0.0400 0.0346 0.0376
09:01-10:00, Sun., 16 Nov. 0.0402 0.0356 0.0378
08:01-09:00, Sun., 16 Nov. 0.0398 0.0354 0.0379
07:01-08:00, Sun., 16 Nov. 0.0408 0.0356 0.0381
06:01-07:00, Sun., 16 Nov. 0.0402 0.0355 0.0382
05:01-06:00, Sun., 16 Nov. 0.0406 0.0360 0.0383
04:01-05:00, Sun., 16 Nov. 0.0401 0.0363 0.0381
03:01-04:00, Sun., 16 Nov. 0.0400 0.0362 0.0381
02:01-03:00, Sun., 16 Nov. 0.0403 0.0360 0.0378
01:01-02:00, Sun., 16 Nov. 0.0401 0.0349 0.0376
00:01-01:00, Sun., 16 Nov. 0.0397 0.0351 0.0378
23:01-24:00, Sat., 15 Nov. 0.0393 0.0355 0.0375
22:01-23:00, Sat., 15 Nov. 0.0398 0.0343 0.0368
21:01-22:00, Sat., 15 Nov. 0.0398 0.0342 0.0369
20:01-21:00, Sat., 15 Nov. 0.0391 0.0347 0.0372
19:01-20:00, Sat., 15 Nov. 0.0382 0.0351 0.0369
18:01-19:00, Sat., 15 Nov. 0.0394 0.0343 0.0370
17:01-18:00, Sat., 15 Nov. 0.0395 0.0349 0.0373
16:01-17:00, Sat., 15 Nov. 0.0406 0.0348 0.0373
15:01-16:00, Sat., 15 Nov. 0.0387 0.0352 0.0372
14:01-15:00, Sat., 15 Nov. 0.0402 0.0349 0.0373
13:01-14:00, Sat., 15 Nov. 0.0395 0.0345 0.0375
12:01-13:00, Sat., 15 Nov. 0.0398 0.0362 0.0377
11:01-12:00, Sat., 15 Nov. 0.0401 0.0361 0.0382
10:01-11:00, Sat., 15 Nov. 0.0401 0.0356 0.0376
09:01-10:00, Sat., 15 Nov. 0.0402 0.0355 0.0378
08:01-09:00, Sat., 15 Nov. 0.0400 0.0349 0.0378
07:01-08:00, Sat., 15 Nov. 0.0394 0.0349 0.0374
06:01-07:00, Sat., 15 Nov. 0.0399 0.0341 0.0375
05:01-06:00, Sat., 15 Nov. 0.0395 0.0355 0.0372
04:01-05:00, Sat., 15 Nov. 0.0406 0.0350 0.0375
03:01-04:00, Sat., 15 Nov. 0.0398 0.0354 0.0374
02:01-03:00, Sat., 15 Nov. 0.0389 0.0349 0.0371
01:01-02:00, Sat., 15 Nov. 0.0398 0.0352 0.0374
00:01-01:00, Sat., 15 Nov. 0.0398 0.0355 0.0376
23:01-24:00, Fri., 14 Nov. 0.0395 0.0345 0.0374
22:01-23:00, Fri., 14 Nov. 0.0393 0.0353 0.0372
21:01-22:00, Fri., 14 Nov. 0.0395 0.0352 0.0374
20:01-21:00, Fri., 14 Nov. 0.0399 0.0349 0.0375
19:01-20:00, Fri., 14 Nov. 0.0402 0.0355 0.0373
18:01-19:00, Fri., 14 Nov. 0.0395 0.0349 0.0375
17:01-18:00, Fri., 14 Nov. 0.0398 0.0349 0.0373
16:01-17:00, Fri., 14 Nov. 0.0416 0.0359 0.0379
15:01-16:00, Fri., 14 Nov. 0.0401 0.0357 0.0378
14:01-15:00, Fri., 14 Nov. 0.0405 0.0360 0.0379
13:01-14:00, Fri., 14 Nov. 0.0397 0.0356 0.0379
12:01-13:00, Fri., 14 Nov. 0.0404 0.0359 0.0381
11:01-12:00, Fri., 14 Nov. 0.0409 0.0359 0.0379
10:01-11:00, Fri., 14 Nov. 0.0401 0.0357 0.0380
09:01-10:00, Fri., 14 Nov. 0.0402 0.0357 0.0381
08:01-09:00, Fri., 14 Nov. 0.0408 0.0355 0.0383
07:01-08:00, Fri., 14 Nov. 0.0412 0.0360 0.0387
06:01-07:00, Fri., 14 Nov. 0.0408 0.0362 0.0385
05:01-06:00, Fri., 14 Nov. 0.0412 0.0366 0.0389
04:01-05:00, Fri., 14 Nov. 0.0424 0.0360 0.0388
03:01-04:00, Fri., 14 Nov. 0.0411 0.0375 0.0392
02:01-03:00, Fri., 14 Nov. 0.0413 0.0371 0.0389
01:01-02:00, Fri., 14 Nov. 0.0412 0.0369 0.0388
00:01-01:00, Fri., 14 Nov. 0.0412 0.0365 0.0387
23:01-24:00, Thu., 13 Nov. 0.0412 0.0363 0.0386
22:01-23:00, Thu., 13 Nov. 0.0411 0.0353 0.0382
21:01-22:00, Thu., 13 Nov. 0.0404 0.0361 0.0379
20:01-21:00, Thu., 13 Nov. 0.0398 0.0359 0.0378
19:01-20:00, Thu., 13 Nov. 0.0393 0.0356 0.0376
18:01-19:00, Thu., 13 Nov. 0.0403 0.0353 0.0379
17:01-18:00, Thu., 13 Nov. 0.0404 0.0363 0.0382
16:01-17:00, Thu., 13 Nov. 0.0410 0.0356 0.0379
15:01-16:00, Thu., 13 Nov. 0.0399 0.0360 0.0381
14:01-15:00, Thu., 13 Nov. 0.0401 0.0360 0.0379
13:01-14:00, Thu., 13 Nov. 0.0398 0.0360 0.0382
12:01-13:00, Thu., 13 Nov. 0.0401 0.0360 0.0379
11:01-12:00, Thu., 13 Nov. 0.0421 0.0366 0.0388
10:01-11:00, Thu., 13 Nov. 0.0402 0.0351 0.0383
09:01-10:00, Thu., 13 Nov. 0.0410 0.0370 0.0384
08:01-09:00, Thu., 13 Nov. 0.0411 0.0370 0.0389
07:01-08:00, Thu., 13 Nov. 0.0409 0.0365 0.0384
06:01-07:00, Thu., 13 Nov. 0.0405 0.0364 0.0386
05:01-06:00, Thu., 13 Nov. 0.0402 0.0357 0.0383
04:01-05:00, Thu., 13 Nov. 0.0406 0.0362 0.0385
03:01-04:00, Thu., 13 Nov. 0.0410 0.0369 0.0385
02:01-03:00, Thu., 13 Nov. 0.0405 0.0367 0.0383
01:01-02:00, Thu., 13 Nov. 0.0398 0.0356 0.0377
00:01-01:00, Thu., 13 Nov. 0.0398 0.0353 0.0374
23:01-24:00, Wed., 12 Nov. 0.0401 0.0350 0.0374
22:01-23:00, Wed., 12 Nov. 0.0387 0.0348 0.0371
21:01-22:00, Wed., 12 Nov. 0.0395 0.0345 0.0371
20:01-21:00, Wed., 12 Nov. 0.0387 0.0351 0.0369
19:01-20:00, Wed., 12 Nov. 0.0393 0.0346 0.0365
18:01-19:00, Wed., 12 Nov. 0.0390 0.0339 0.0366
17:01-18:00, Wed., 12 Nov. 0.0395 0.0337 0.0367
16:01-17:00, Wed., 12 Nov. 0.0391 0.0339 0.0367
15:01-16:00, Wed., 12 Nov. 0.0384 0.0355 0.0371
14:01-15:00, Wed., 12 Nov. 0.0405 0.0353 0.0373
13:01-14:00, Wed., 12 Nov. 0.0391 0.0344 0.0373
12:01-13:00, Wed., 12 Nov. 0.0407 0.0344 0.0374
11:01-12:00, Wed., 12 Nov. 0.0398 0.0349 0.0373
10:01-11:00, Wed., 12 Nov. 0.0407 0.0360 0.0376
09:01-10:00, Wed., 12 Nov. 0.0399 0.0353 0.0374
08:01-09:00, Wed., 12 Nov. 0.0399 0.0349 0.0378
07:01-08:00, Wed., 12 Nov. 0.0401 0.0356 0.0377
06:01-07:00, Wed., 12 Nov. 0.0397 0.0353 0.0376
05:01-06:00, Wed., 12 Nov. 0.0402 0.0353 0.0375
04:01-05:00, Wed., 12 Nov. 0.0398 0.0347 0.0373
03:01-04:00, Wed., 12 Nov. 0.0405 0.0355 0.0376
02:01-03:00, Wed., 12 Nov. 0.0392 0.0349 0.0373
01:01-02:00, Wed., 12 Nov. 0.0395 0.0350 0.0372
00:01-01:00, Wed., 12 Nov. 0.0399 0.0356 0.0378
23:01-24:00, Tue., 11 Nov. 0.0397 0.0348 0.0374
22:01-23:00, Tue., 11 Nov. 0.0406 0.0356 0.0377
21:01-22:00, Tue., 11 Nov. 0.0402 0.0349 0.0373
20:01-21:00, Tue., 11 Nov. 0.0393 0.0351 0.0371
19:01-20:00, Tue., 11 Nov. 0.0396 0.0345 0.0375
18:01-19:00, Tue., 11 Nov. 0.0400 0.0346 0.0373
17:01-18:00, Tue., 11 Nov. 0.0408 0.0353 0.0375
16:01-17:00, Tue., 11 Nov. 0.0410 0.0360 0.0379
15:01-16:00, Tue., 11 Nov. 0.0406 0.0353 0.0377
14:01-15:00, Tue., 11 Nov. 0.0407 0.0360 0.0379
13:01-14:00, Tue., 11 Nov. 0.0398 0.0358 0.0380
12:01-13:00, Tue., 11 Nov. 0.0402 0.0358 0.0378
11:01-12:00, Tue., 11 Nov. 0.0405 0.0353 0.0377
10:01-11:00, Tue., 11 Nov. 0.0397 0.0355 0.0378
09:01-10:00, Tue., 11 Nov. 0.0411 0.0344 0.0378
08:01-09:00, Tue., 11 Nov. 0.0401 0.0350 0.0378
07:01-08:00, Tue., 11 Nov. 0.0409 0.0363 0.0379
06:01-07:00, Tue., 11 Nov. 0.0407 0.0361 0.0382
05:01-06:00, Tue., 11 Nov. 0.0402 0.0363 0.0378