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
12:01-13:00, Sun., 23 Feb. 0.0424 0.0376 0.0397
11:01-12:00, Sun., 23 Feb. 0.0416 0.0376 0.0395
10:01-11:00, Sun., 23 Feb. 0.0420 0.0381 0.0399
09:01-10:00, Sun., 23 Feb. 0.0434 0.0377 0.0397
08:01-09:00, Sun., 23 Feb. 0.0427 0.0382 0.0402
07:01-08:00, Sun., 23 Feb. 0.0426 0.0378 0.0401
06:01-07:00, Sun., 23 Feb. 0.0426 0.0379 0.0401
05:01-06:00, Sun., 23 Feb. 0.0427 0.0380 0.0400
04:01-05:00, Sun., 23 Feb. 0.0419 0.0381 0.0401
03:01-04:00, Sun., 23 Feb. 0.0426 0.0380 0.0399
02:01-03:00, Sun., 23 Feb. 0.0425 0.0380 0.0399
01:01-02:00, Sun., 23 Feb. 0.0424 0.0379 0.0400
00:01-01:00, Sun., 23 Feb. 0.0423 0.0380 0.0401
23:01-24:00, Sat., 22 Feb. 0.0424 0.0381 0.0401
22:01-23:00, Sat., 22 Feb. 0.0428 0.0384 0.0402
21:01-22:00, Sat., 22 Feb. 0.0419 0.0386 0.0402
20:01-21:00, Sat., 22 Feb. 0.0430 0.0383 0.0405
19:01-20:00, Sat., 22 Feb. 0.0428 0.0374 0.0398
18:01-19:00, Sat., 22 Feb. 0.0420 0.0383 0.0399
17:01-18:00, Sat., 22 Feb. 0.0426 0.0368 0.0401
16:01-17:00, Sat., 22 Feb. 0.0419 0.0377 0.0403
15:01-16:00, Sat., 22 Feb. 0.0423 0.0377 0.0399
14:01-15:00, Sat., 22 Feb. 0.0422 0.0377 0.0399
13:01-14:00, Sat., 22 Feb. 0.0423 0.0372 0.0396
12:01-13:00, Sat., 22 Feb. 0.0426 0.0363 0.0394
11:01-12:00, Sat., 22 Feb. 0.0412 0.0367 0.0393
10:01-11:00, Sat., 22 Feb. 0.0418 0.0375 0.0397
09:01-10:00, Sat., 22 Feb. 0.0418 0.0379 0.0400
08:01-09:00, Sat., 22 Feb. 0.0426 0.0375 0.0402
07:01-08:00, Sat., 22 Feb. 0.0433 0.0371 0.0401
06:01-07:00, Sat., 22 Feb. 0.0437 0.0374 0.0403
05:01-06:00, Sat., 22 Feb. 0.0436 0.0383 0.0405
04:01-05:00, Sat., 22 Feb. 0.0427 0.0381 0.0403
03:01-04:00, Sat., 22 Feb. 0.0424 0.0371 0.0402
02:01-03:00, Sat., 22 Feb. 0.0426 0.0379 0.0399
01:01-02:00, Sat., 22 Feb. 0.0425 0.0382 0.0401
00:01-01:00, Sat., 22 Feb. 0.0427 0.0368 0.0396
23:01-24:00, Fri., 21 Feb. 0.0419 0.0380 0.0399
22:01-23:00, Fri., 21 Feb. 0.0417 0.0379 0.0398
21:01-22:00, Fri., 21 Feb. 0.0422 0.0379 0.0401
20:01-21:00, Fri., 21 Feb. 0.0426 0.0372 0.0398
19:01-20:00, Fri., 21 Feb. 0.0419 0.0377 0.0397
18:01-19:00, Fri., 21 Feb. 0.0419 0.0371 0.0398
17:01-18:00, Fri., 21 Feb. 0.0418 0.0379 0.0395
16:01-17:00, Fri., 21 Feb. 0.0418 0.0375 0.0397
15:01-16:00, Fri., 21 Feb. 0.0419 0.0373 0.0396
14:01-15:00, Fri., 21 Feb. 0.0413 0.0376 0.0395
13:01-14:00, Fri., 21 Feb. 0.0429 0.0375 0.0398
12:01-13:00, Fri., 21 Feb. 0.0416 0.0370 0.0399
11:01-12:00, Fri., 21 Feb. 0.0423 0.0371 0.0401
10:01-11:00, Fri., 21 Feb. 0.0431 0.0384 0.0402
09:01-10:00, Fri., 21 Feb. 0.0433 0.0377 0.0402
08:01-09:00, Fri., 21 Feb. 0.0426 0.0384 0.0403
07:01-08:00, Fri., 21 Feb. 0.0428 0.0376 0.0405
06:01-07:00, Fri., 21 Feb. 0.0422 0.0378 0.0403
05:01-06:00, Fri., 21 Feb. 0.0426 0.0380 0.0402
04:01-05:00, Fri., 21 Feb. 0.0435 0.0381 0.0405
03:01-04:00, Fri., 21 Feb. 0.0429 0.0377 0.0403
02:01-03:00, Fri., 21 Feb. 0.0423 0.0369 0.0401
01:01-02:00, Fri., 21 Feb. 0.0430 0.0370 0.0400
00:01-01:00, Fri., 21 Feb. 0.0423 0.0370 0.0400
23:01-24:00, Thu., 20 Feb. 0.0423 0.0376 0.0400
22:01-23:00, Thu., 20 Feb. 0.0428 0.0363 0.0401
21:01-22:00, Thu., 20 Feb. 0.0417 0.0366 0.0394
20:01-21:00, Thu., 20 Feb. 0.0413 0.0374 0.0394
19:01-20:00, Thu., 20 Feb. 0.0419 0.0372 0.0396
18:01-19:00, Thu., 20 Feb. 0.0415 0.0375 0.0394
17:01-18:00, Thu., 20 Feb. 0.0412 0.0373 0.0393
16:01-17:00, Thu., 20 Feb. 0.0418 0.0373 0.0394
15:01-16:00, Thu., 20 Feb. 0.0413 0.0363 0.0392
14:01-15:00, Thu., 20 Feb. 0.0423 0.0379 0.0393
13:01-14:00, Thu., 20 Feb. 0.0417 0.0376 0.0394
12:01-13:00, Thu., 20 Feb. 0.0414 0.0370 0.0394
11:01-12:00, Thu., 20 Feb. 0.0416 0.0378 0.0394
10:01-11:00, Thu., 20 Feb. 0.0422 0.0381 0.0399
09:01-10:00, Thu., 20 Feb. 0.0419 0.0371 0.0397
08:01-09:00, Thu., 20 Feb. 0.0425 0.0374 0.0401
07:01-08:00, Thu., 20 Feb. 0.0427 0.0382 0.0402
06:01-07:00, Thu., 20 Feb. 0.0425 0.0373 0.0398
05:01-06:00, Thu., 20 Feb. 0.0416 0.0380 0.0399
04:01-05:00, Thu., 20 Feb. 0.0433 0.0379 0.0403
03:01-04:00, Thu., 20 Feb. 0.0421 0.0370 0.0400
02:01-03:00, Thu., 20 Feb. 0.0423 0.0379 0.0399
01:01-02:00, Thu., 20 Feb. 0.0424 0.0376 0.0400
00:01-01:00, Thu., 20 Feb. 0.0426 0.0384 0.0402
23:01-24:00, Wed., 19 Feb. 0.0441 0.0374 0.0400
22:01-23:00, Wed., 19 Feb. 0.0423 0.0373 0.0402
21:01-22:00, Wed., 19 Feb. 0.0420 0.0381 0.0404
20:01-21:00, Wed., 19 Feb. 0.0441 0.0384 0.0403
19:01-20:00, Wed., 19 Feb. 0.0425 0.0386 0.0403
18:01-19:00, Wed., 19 Feb. 0.0419 0.0376 0.0400
17:01-18:00, Wed., 19 Feb. 0.0419 0.0377 0.0400
16:01-17:00, Wed., 19 Feb. 0.0426 0.0376 0.0401
15:01-16:00, Wed., 19 Feb. 0.0420 0.0377 0.0398
14:01-15:00, Wed., 19 Feb. 0.0425 0.0372 0.0399
13:01-14:00, Wed., 19 Feb. 0.0430 0.0370 0.0399
12:01-13:00, Wed., 19 Feb. 0.0419 0.0374 0.0396
11:01-12:00, Wed., 19 Feb. 0.0417 0.0376 0.0397
10:01-11:00, Wed., 19 Feb. 0.0416 0.0378 0.0400
09:01-10:00, Wed., 19 Feb. 0.0426 0.0378 0.0402
08:01-09:00, Wed., 19 Feb. 0.0434 0.0377 0.0405
07:01-08:00, Wed., 19 Feb. 0.0428 0.0384 0.0400
06:01-07:00, Wed., 19 Feb. 0.0423 0.0375 0.0401
05:01-06:00, Wed., 19 Feb. 0.0426 0.0381 0.0405
04:01-05:00, Wed., 19 Feb. 0.0433 0.0367 0.0409
03:01-04:00, Wed., 19 Feb. 0.0427 0.0388 0.0406
02:01-03:00, Wed., 19 Feb. 0.0433 0.0381 0.0409
01:01-02:00, Wed., 19 Feb. 0.0433 0.0387 0.0409
00:01-01:00, Wed., 19 Feb. 0.0443 0.0388 0.0410
23:01-24:00, Tue., 18 Feb. 0.0435 0.0383 0.0407
22:01-23:00, Tue., 18 Feb. 0.0429 0.0382 0.0404
21:01-22:00, Tue., 18 Feb. 0.0423 0.0384 0.0404
20:01-21:00, Tue., 18 Feb. 0.0433 0.0379 0.0402
19:01-20:00, Tue., 18 Feb. 0.0423 0.0382 0.0401
18:01-19:00, Tue., 18 Feb. 0.0427 0.0370 0.0401
17:01-18:00, Tue., 18 Feb. 0.0423 0.0377 0.0399
16:01-17:00, Tue., 18 Feb. 0.0427 0.0379 0.0404
15:01-16:00, Tue., 18 Feb. 0.0429 0.0384 0.0401
14:01-15:00, Tue., 18 Feb. 0.0421 0.0377 0.0401
13:01-14:00, Tue., 18 Feb. 0.0419 0.0377 0.0401
12:01-13:00, Tue., 18 Feb. 0.0429 0.0382 0.0402
11:01-12:00, Tue., 18 Feb. 0.0426 0.0375 0.0402
10:01-11:00, Tue., 18 Feb. 0.0428 0.0382 0.0404
09:01-10:00, Tue., 18 Feb. 0.0434 0.0387 0.0406
08:01-09:00, Tue., 18 Feb. 0.0433 0.0379 0.0408
07:01-08:00, Tue., 18 Feb. 0.0425 0.0386 0.0407
06:01-07:00, Tue., 18 Feb. 0.0435 0.0382 0.0409
05:01-06:00, Tue., 18 Feb. 0.0435 0.0379 0.0410
04:01-05:00, Tue., 18 Feb. 0.0431 0.0395 0.0413
03:01-04:00, Tue., 18 Feb. 0.0439 0.0393 0.0413
02:01-03:00, Tue., 18 Feb. 0.0438 0.0384 0.0415
01:01-02:00, Tue., 18 Feb. 0.0438 0.0393 0.0415
00:01-01:00, Tue., 18 Feb. 0.0436 0.0391 0.0416
23:01-24:00, Mon., 17 Feb. 0.0437 0.0397 0.0415
22:01-23:00, Mon., 17 Feb. 0.0429 0.0380 0.0410
21:01-22:00, Mon., 17 Feb. 0.0428 0.0377 0.0406
20:01-21:00, Mon., 17 Feb. 0.0440 0.0378 0.0407
19:01-20:00, Mon., 17 Feb. 0.0430 0.0384 0.0407
18:01-19:00, Mon., 17 Feb. 0.0428 0.0381 0.0406
17:01-18:00, Mon., 17 Feb. 0.0423 0.0391 0.0406
16:01-17:00, Mon., 17 Feb. 0.0427 0.0371 0.0398
15:01-16:00, Mon., 17 Feb. 0.0420 0.0377 0.0402
14:01-15:00, Mon., 17 Feb. 0.0428 0.0379 0.0398
13:01-14:00, Mon., 17 Feb. 0.0423 0.0376 0.0399
12:01-13:00, Mon., 17 Feb. 0.0420 0.0382 0.0399
11:01-12:00, Mon., 17 Feb. 0.0419 0.0374 0.0395
10:01-11:00, Mon., 17 Feb. 0.0426 0.0377 0.0401
09:01-10:00, Mon., 17 Feb. 0.0423 0.0382 0.0402
08:01-09:00, Mon., 17 Feb. 0.0423 0.0379 0.0403
07:01-08:00, Mon., 17 Feb. 0.0430 0.0382 0.0405
06:01-07:00, Mon., 17 Feb. 0.0426 0.0388 0.0406
05:01-06:00, Mon., 17 Feb. 0.0427 0.0382 0.0404
04:01-05:00, Mon., 17 Feb. 0.0427 0.0381 0.0402
03:01-04:00, Mon., 17 Feb. 0.0433 0.0378 0.0404
02:01-03:00, Mon., 17 Feb. 0.0423 0.0382 0.0401
01:01-02:00, Mon., 17 Feb. 0.0419 0.0378 0.0401
00:01-01:00, Mon., 17 Feb. 0.0422 0.0377 0.0400
23:01-24:00, Sun., 16 Feb. 0.0419 0.0374 0.0395
22:01-23:00, Sun., 16 Feb. 0.0429 0.0370 0.0397
21:01-22:00, Sun., 16 Feb. 0.0413 0.0378 0.0395
20:01-21:00, Sun., 16 Feb. 0.0410 0.0367 0.0393
19:01-20:00, Sun., 16 Feb. 0.0412 0.0370 0.0391
18:01-19:00, Sun., 16 Feb. 0.0410 0.0370 0.0389
17:01-18:00, Sun., 16 Feb. 0.0413 0.0360 0.0391
16:01-17:00, Sun., 16 Feb. 0.0417 0.0376 0.0395
15:01-16:00, Sun., 16 Feb. 0.0419 0.0368 0.0393
14:01-15:00, Sun., 16 Feb. 0.0423 0.0376 0.0396
13:01-14:00, Sun., 16 Feb. 0.0416 0.0374 0.0397
12:01-13:00, Sun., 16 Feb. 0.0422 0.0368 0.0401
11:01-12:00, Sun., 16 Feb. 0.0426 0.0370 0.0396
10:01-11:00, Sun., 16 Feb. 0.0419 0.0376 0.0393
09:01-10:00, Sun., 16 Feb. 0.0411 0.0364 0.0391
08:01-09:00, Sun., 16 Feb. 0.0414 0.0373 0.0395
07:01-08:00, Sun., 16 Feb. 0.0420 0.0372 0.0400
06:01-07:00, Sun., 16 Feb. 0.0434 0.0376 0.0399
05:01-06:00, Sun., 16 Feb. 0.0430 0.0378 0.0403
04:01-05:00, Sun., 16 Feb. 0.0419 0.0370 0.0397
03:01-04:00, Sun., 16 Feb. 0.0416 0.0375 0.0398
02:01-03:00, Sun., 16 Feb. 0.0423 0.0376 0.0399
01:01-02:00, Sun., 16 Feb. 0.0419 0.0360 0.0395
00:01-01:00, Sun., 16 Feb. 0.0415 0.0368 0.0391
23:01-24:00, Sat., 15 Feb. 0.0412 0.0373 0.0392
22:01-23:00, Sat., 15 Feb. 0.0409 0.0368 0.0393
21:01-22:00, Sat., 15 Feb. 0.0426 0.0366 0.0395
20:01-21:00, Sat., 15 Feb. 0.0415 0.0367 0.0392
19:01-20:00, Sat., 15 Feb. 0.0413 0.0367 0.0390
18:01-19:00, Sat., 15 Feb. 0.0412 0.0373 0.0392
17:01-18:00, Sat., 15 Feb. 0.0411 0.0366 0.0390
16:01-17:00, Sat., 15 Feb. 0.0411 0.0357 0.0388
15:01-16:00, Sat., 15 Feb. 0.0411 0.0368 0.0391
14:01-15:00, Sat., 15 Feb. 0.0420 0.0368 0.0389
13:01-14:00, Sat., 15 Feb. 0.0426 0.0367 0.0392
12:01-13:00, Sat., 15 Feb. 0.0423 0.0371 0.0394
11:01-12:00, Sat., 15 Feb. 0.0417 0.0370 0.0391
10:01-11:00, Sat., 15 Feb. 0.0419 0.0360 0.0392
09:01-10:00, Sat., 15 Feb. 0.0421 0.0369 0.0397
08:01-09:00, Sat., 15 Feb. 0.0428 0.0377 0.0397
07:01-08:00, Sat., 15 Feb. 0.0417 0.0376 0.0396
06:01-07:00, Sat., 15 Feb. 0.0420 0.0381 0.0396
05:01-06:00, Sat., 15 Feb. 0.0429 0.0372 0.0399
04:01-05:00, Sat., 15 Feb. 0.0420 0.0373 0.0395
03:01-04:00, Sat., 15 Feb. 0.0413 0.0360 0.0395
02:01-03:00, Sat., 15 Feb. 0.0419 0.0372 0.0397
01:01-02:00, Sat., 15 Feb. 0.0414 0.0365 0.0394
00:01-01:00, Sat., 15 Feb. 0.0418 0.0372 0.0398
23:01-24:00, Fri., 14 Feb. 0.0409 0.0367 0.0392
22:01-23:00, Fri., 14 Feb. 0.0419 0.0374 0.0395
21:01-22:00, Fri., 14 Feb. 0.0412 0.0375 0.0393
20:01-21:00, Fri., 14 Feb. 0.0424 0.0373 0.0397
19:01-20:00, Fri., 14 Feb. 0.0420 0.0365 0.0393
18:01-19:00, Fri., 14 Feb. 0.0411 0.0370 0.0391
17:01-18:00, Fri., 14 Feb. 0.0417 0.0366 0.0394
16:01-17:00, Fri., 14 Feb. 0.0413 0.0367 0.0390
15:01-16:00, Fri., 14 Feb. 0.0418 0.0367 0.0394
14:01-15:00, Fri., 14 Feb. 0.0414 0.0372 0.0394
13:01-14:00, Fri., 14 Feb. 0.0419 0.0376 0.0398
12:01-13:00, Fri., 14 Feb. 0.0425 0.0376 0.0394
11:01-12:00, Fri., 14 Feb. 0.0419 0.0363 0.0396
10:01-11:00, Fri., 14 Feb. 0.0419 0.0382 0.0399
09:01-10:00, Fri., 14 Feb. 0.0420 0.0370 0.0401
08:01-09:00, Fri., 14 Feb. 0.0420 0.0384 0.0401
07:01-08:00, Fri., 14 Feb. 0.0419 0.0379 0.0402
06:01-07:00, Fri., 14 Feb. 0.0428 0.0382 0.0403
05:01-06:00, Fri., 14 Feb. 0.0419 0.0382 0.0401
04:01-05:00, Fri., 14 Feb. 0.0419 0.0373 0.0399
03:01-04:00, Fri., 14 Feb. 0.0426 0.0374 0.0402
02:01-03:00, Fri., 14 Feb. 0.0428 0.0377 0.0403
01:01-02:00, Fri., 14 Feb. 0.0420 0.0381 0.0401
00:01-01:00, Fri., 14 Feb. 0.0422 0.0389 0.0405
23:01-24:00, Thu., 13 Feb. 0.0436 0.0379 0.0404
22:01-23:00, Thu., 13 Feb. 0.0428 0.0374 0.0405
21:01-22:00, Thu., 13 Feb. 0.0423 0.0378 0.0404
20:01-21:00, Thu., 13 Feb. 0.0423 0.0384 0.0405
19:01-20:00, Thu., 13 Feb. 0.0418 0.0381 0.0401
18:01-19:00, Thu., 13 Feb. 0.0429 0.0380 0.0398
17:01-18:00, Thu., 13 Feb. 0.0422 0.0377 0.0401
16:01-17:00, Thu., 13 Feb. 0.0419 0.0365 0.0401
15:01-16:00, Thu., 13 Feb. 0.0427 0.0375 0.0405
14:01-15:00, Thu., 13 Feb. 0.0429 0.0375 0.0406
13:01-14:00, Thu., 13 Feb. 0.0428 0.0384 0.0405