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, Mon., 22 Jun. 0.0386 0.0348 0.0363
03:01-04:00, Mon., 22 Jun. 0.0387 0.0342 0.0367
02:01-03:00, Mon., 22 Jun. 0.0385 0.0341 0.0365
01:01-02:00, Mon., 22 Jun. 0.0383 0.0342 0.0365
00:01-01:00, Mon., 22 Jun. 0.0384 0.0340 0.0363
23:01-24:00, Sun., 21 Jun. 0.0383 0.0350 0.0366
22:01-23:00, Sun., 21 Jun. 0.0386 0.0340 0.0364
21:01-22:00, Sun., 21 Jun. 0.0384 0.0345 0.0365
20:01-21:00, Sun., 21 Jun. 0.0391 0.0348 0.0369
19:01-20:00, Sun., 21 Jun. 0.0398 0.0356 0.0373
18:01-19:00, Sun., 21 Jun. 0.0398 0.0346 0.0371
17:01-18:00, Sun., 21 Jun. 0.0397 0.0334 0.0368
16:01-17:00, Sun., 21 Jun. 0.0400 0.0349 0.0368
15:01-16:00, Sun., 21 Jun. 0.0386 0.0349 0.0369
14:01-15:00, Sun., 21 Jun. 0.0396 0.0341 0.0372
13:01-14:00, Sun., 21 Jun. 0.0395 0.0353 0.0371
12:01-13:00, Sun., 21 Jun. 0.0405 0.0345 0.0372
11:01-12:00, Sun., 21 Jun. 0.0384 0.0342 0.0364
10:01-11:00, Sun., 21 Jun. 0.0382 0.0345 0.0362
09:01-10:00, Sun., 21 Jun. 0.0391 0.0345 0.0363
08:01-09:00, Sun., 21 Jun. 0.0386 0.0343 0.0365
07:01-08:00, Sun., 21 Jun. 0.0389 0.0348 0.0369
06:01-07:00, Sun., 21 Jun. 0.0411 0.0345 0.0385
05:01-06:00, Sun., 21 Jun. 0.0494 0.0404 0.0443
04:01-05:00, Sun., 21 Jun. 0.0530 0.0403 0.0474
03:01-04:00, Sun., 21 Jun. 0.0454 0.0388 0.0414
02:01-03:00, Sun., 21 Jun. 0.0470 0.0418 0.0441
01:01-02:00, Sun., 21 Jun. 0.0492 0.0428 0.0449
00:01-01:00, Sun., 21 Jun. 0.0483 0.0412 0.0449
23:01-24:00, Sat., 20 Jun. 0.0494 0.0422 0.0453
22:01-23:00, Sat., 20 Jun. 0.0518 0.0453 0.0483
21:01-22:00, Sat., 20 Jun. 0.0531 0.0468 0.0506
20:01-21:00, Sat., 20 Jun. 0.0511 0.0450 0.0487
19:01-20:00, Sat., 20 Jun. 0.0529 0.0464 0.0500
18:01-19:00, Sat., 20 Jun. 0.0481 0.0408 0.0440
17:01-18:00, Sat., 20 Jun. 0.0486 0.0407 0.0445
16:01-17:00, Sat., 20 Jun. 0.0544 0.0468 0.0501
15:01-16:00, Sat., 20 Jun. 0.0519 0.0388 0.0451
14:01-15:00, Sat., 20 Jun. 0.0423 0.0384 0.0401
13:01-14:00, Sat., 20 Jun. 0.0402 0.0355 0.0380
12:01-13:00, Sat., 20 Jun. 0.0395 0.0353 0.0376
11:01-12:00, Sat., 20 Jun. 0.0388 0.0349 0.0366
10:01-11:00, Sat., 20 Jun. 0.0388 0.0347 0.0367
09:01-10:00, Sat., 20 Jun. 0.0384 0.0346 0.0365
08:01-09:00, Sat., 20 Jun. 0.0381 0.0336 0.0363
07:01-08:00, Sat., 20 Jun. 0.0387 0.0343 0.0366
06:01-07:00, Sat., 20 Jun. 0.0388 0.0340 0.0366
05:01-06:00, Sat., 20 Jun. 0.0381 0.0345 0.0363
04:01-05:00, Sat., 20 Jun. 0.0390 0.0339 0.0366
03:01-04:00, Sat., 20 Jun. 0.0386 0.0344 0.0367
02:01-03:00, Sat., 20 Jun. 0.0405 0.0344 0.0368
01:01-02:00, Sat., 20 Jun. 0.0386 0.0343 0.0367
00:01-01:00, Sat., 20 Jun. 0.0387 0.0341 0.0365
23:01-24:00, Fri., 19 Jun. 0.0394 0.0345 0.0368
22:01-23:00, Fri., 19 Jun. 0.0402 0.0353 0.0371
21:01-22:00, Fri., 19 Jun. 0.0386 0.0340 0.0368
20:01-21:00, Fri., 19 Jun. 0.0396 0.0346 0.0372
19:01-20:00, Fri., 19 Jun. 0.0402 0.0350 0.0376
18:01-19:00, Fri., 19 Jun. 0.0409 0.0346 0.0374
17:01-18:00, Fri., 19 Jun. 0.0400 0.0347 0.0368
16:01-17:00, Fri., 19 Jun. 0.0395 0.0347 0.0374
15:01-16:00, Fri., 19 Jun. 0.0391 0.0353 0.0376
14:01-15:00, Fri., 19 Jun. 0.0391 0.0352 0.0371
13:01-14:00, Fri., 19 Jun. 0.0398 0.0353 0.0371
12:01-13:00, Fri., 19 Jun. 0.0394 0.0345 0.0370
11:01-12:00, Fri., 19 Jun. 0.0387 0.0345 0.0369
10:01-11:00, Fri., 19 Jun. 0.0395 0.0346 0.0372
09:01-10:00, Fri., 19 Jun. 0.0399 0.0347 0.0369
08:01-09:00, Fri., 19 Jun. 0.0387 0.0334 0.0366
07:01-08:00, Fri., 19 Jun. 0.0389 0.0339 0.0363
06:01-07:00, Fri., 19 Jun. 0.0389 0.0337 0.0364
05:01-06:00, Fri., 19 Jun. 0.0383 0.0342 0.0362
04:01-05:00, Fri., 19 Jun. 0.0386 0.0347 0.0365
03:01-04:00, Fri., 19 Jun. 0.0382 0.0343 0.0363
02:01-03:00, Fri., 19 Jun. 0.0389 0.0339 0.0362
01:01-02:00, Fri., 19 Jun. 0.0382 0.0342 0.0361
00:01-01:00, Fri., 19 Jun. 0.0384 0.0342 0.0361
23:01-24:00, Thu., 18 Jun. 0.0380 0.0346 0.0363
22:01-23:00, Thu., 18 Jun. 0.0382 0.0337 0.0361
21:01-22:00, Thu., 18 Jun. 0.0384 0.0335 0.0359
20:01-21:00, Thu., 18 Jun. 0.0378 0.0336 0.0359
19:01-20:00, Thu., 18 Jun. 0.0381 0.0336 0.0362
18:01-19:00, Thu., 18 Jun. 0.0382 0.0339 0.0361
17:01-18:00, Thu., 18 Jun. 0.0381 0.0339 0.0363
16:01-17:00, Thu., 18 Jun. 0.0384 0.0346 0.0362
15:01-16:00, Thu., 18 Jun. 0.0382 0.0343 0.0363
14:01-15:00, Thu., 18 Jun. 0.0384 0.0337 0.0361
13:01-14:00, Thu., 18 Jun. 0.0382 0.0339 0.0361
12:01-13:00, Thu., 18 Jun. 0.0387 0.0343 0.0365
11:01-12:00, Thu., 18 Jun. 0.0391 0.0345 0.0371
10:01-11:00, Thu., 18 Jun. 0.0397 0.0356 0.0377
09:01-10:00, Thu., 18 Jun. 0.0421 0.0372 0.0393
08:01-09:00, Thu., 18 Jun. 0.0435 0.0381 0.0405
07:01-08:00, Thu., 18 Jun. 0.0419 0.0374 0.0402
06:01-07:00, Thu., 18 Jun. 0.0441 0.0391 0.0413
05:01-06:00, Thu., 18 Jun. 0.0437 0.0397 0.0415
04:01-05:00, Thu., 18 Jun. 0.0431 0.0383 0.0408
03:01-04:00, Thu., 18 Jun. 0.0435 0.0368 0.0407
02:01-03:00, Thu., 18 Jun. 0.0412 0.0370 0.0393
01:01-02:00, Thu., 18 Jun. 0.0429 0.0370 0.0405
00:01-01:00, Thu., 18 Jun. 0.0418 0.0363 0.0395
23:01-24:00, Wed., 17 Jun. 0.0402 0.0351 0.0377
22:01-23:00, Wed., 17 Jun. 0.0390 0.0345 0.0367
21:01-22:00, Wed., 17 Jun. 0.0389 0.0338 0.0368
20:01-21:00, Wed., 17 Jun. 0.0398 0.0349 0.0367
19:01-20:00, Wed., 17 Jun. 0.0391 0.0343 0.0366
18:01-19:00, Wed., 17 Jun. 0.0389 0.0343 0.0370
17:01-18:00, Wed., 17 Jun. 0.0401 0.0348 0.0372
16:01-17:00, Wed., 17 Jun. 0.0392 0.0353 0.0377
15:01-16:00, Wed., 17 Jun. 0.0391 0.0359 0.0373
14:01-15:00, Wed., 17 Jun. 0.0398 0.0353 0.0375
13:01-14:00, Wed., 17 Jun. 0.0400 0.0352 0.0374
12:01-13:00, Wed., 17 Jun. 0.0398 0.0357 0.0375
11:01-12:00, Wed., 17 Jun. 0.0403 0.0345 0.0374
10:01-11:00, Wed., 17 Jun. 0.0387 0.0349 0.0371
09:01-10:00, Wed., 17 Jun. 0.0391 0.0356 0.0372
08:01-09:00, Wed., 17 Jun. 0.0396 0.0342 0.0368
07:01-08:00, Wed., 17 Jun. 0.0399 0.0347 0.0366
06:01-07:00, Wed., 17 Jun. 0.0384 0.0343 0.0366
05:01-06:00, Wed., 17 Jun. 0.0388 0.0339 0.0363
04:01-05:00, Wed., 17 Jun. 0.0382 0.0345 0.0364
03:01-04:00, Wed., 17 Jun. 0.0382 0.0346 0.0364
02:01-03:00, Wed., 17 Jun. 0.0392 0.0346 0.0365
01:01-02:00, Wed., 17 Jun. 0.0392 0.0327 0.0366
00:01-01:00, Wed., 17 Jun. 0.0383 0.0342 0.0363
23:01-24:00, Tue., 16 Jun. 0.0382 0.0345 0.0363
22:01-23:00, Tue., 16 Jun. 0.0390 0.0344 0.0364
21:01-22:00, Tue., 16 Jun. 0.0386 0.0353 0.0368
20:01-21:00, Tue., 16 Jun. 0.0388 0.0346 0.0365
19:01-20:00, Tue., 16 Jun. 0.0392 0.0340 0.0363
18:01-19:00, Tue., 16 Jun. 0.0384 0.0345 0.0362
17:01-18:00, Tue., 16 Jun. 0.0404 0.0349 0.0370
16:01-17:00, Tue., 16 Jun. 0.0390 0.0351 0.0369
15:01-16:00, Tue., 16 Jun. 0.0394 0.0346 0.0372
14:01-15:00, Tue., 16 Jun. 0.0395 0.0350 0.0376
13:01-14:00, Tue., 16 Jun. 0.0397 0.0346 0.0373
12:01-13:00, Tue., 16 Jun. 0.0401 0.0356 0.0373
11:01-12:00, Tue., 16 Jun. 0.0393 0.0345 0.0373
10:01-11:00, Tue., 16 Jun. 0.0393 0.0356 0.0372
09:01-10:00, Tue., 16 Jun. 0.0402 0.0349 0.0373
08:01-09:00, Tue., 16 Jun. 0.0386 0.0335 0.0365
07:01-08:00, Tue., 16 Jun. 0.0387 0.0349 0.0366
06:01-07:00, Tue., 16 Jun. 0.0390 0.0339 0.0361
05:01-06:00, Tue., 16 Jun. 0.0382 0.0337 0.0359
04:01-05:00, Tue., 16 Jun. 0.0381 0.0332 0.0358
03:01-04:00, Tue., 16 Jun. 0.0381 0.0335 0.0361
02:01-03:00, Tue., 16 Jun. 0.0382 0.0343 0.0363
01:01-02:00, Tue., 16 Jun. 0.0388 0.0340 0.0360
00:01-01:00, Tue., 16 Jun. 0.0383 0.0337 0.0360
23:01-24:00, Mon., 15 Jun. 0.0382 0.0340 0.0360
22:01-23:00, Mon., 15 Jun. 0.0389 0.0332 0.0359
21:01-22:00, Mon., 15 Jun. 0.0381 0.0336 0.0358
20:01-21:00, Mon., 15 Jun. 0.0382 0.0333 0.0360
19:01-20:00, Mon., 15 Jun. 0.0389 0.0333 0.0360
18:01-19:00, Mon., 15 Jun. 0.0382 0.0333 0.0360
17:01-18:00, Mon., 15 Jun. 0.0381 0.0334 0.0359
16:01-17:00, Mon., 15 Jun. 0.0388 0.0343 0.0362
15:01-16:00, Mon., 15 Jun. 0.0382 0.0345 0.0362
14:01-15:00, Mon., 15 Jun. 0.0382 0.0331 0.0360
13:01-14:00, Mon., 15 Jun. 0.0384 0.0336 0.0360
12:01-13:00, Mon., 15 Jun. 0.0382 0.0327 0.0359
11:01-12:00, Mon., 15 Jun. 0.0389 0.0333 0.0360
10:01-11:00, Mon., 15 Jun. 0.0398 0.0352 0.0371
09:01-10:00, Mon., 15 Jun. 0.0398 0.0343 0.0366
08:01-09:00, Mon., 15 Jun. 0.0437 0.0364 0.0404
07:01-08:00, Mon., 15 Jun. 0.0475 0.0406 0.0445
06:01-07:00, Mon., 15 Jun. 0.0471 0.0426 0.0448
05:01-06:00, Mon., 15 Jun. 0.0479 0.0426 0.0450
04:01-05:00, Mon., 15 Jun. 0.0468 0.0412 0.0437
03:01-04:00, Mon., 15 Jun. 0.0460 0.0408 0.0431
02:01-03:00, Mon., 15 Jun. 0.0440 0.0382 0.0404
01:01-02:00, Mon., 15 Jun. 0.0434 0.0363 0.0399
00:01-01:00, Mon., 15 Jun. 0.0419 0.0347 0.0386
23:01-24:00, Sun., 14 Jun. 0.0398 0.0346 0.0371
22:01-23:00, Sun., 14 Jun. 0.0395 0.0339 0.0365
21:01-22:00, Sun., 14 Jun. 0.0385 0.0346 0.0366
20:01-21:00, Sun., 14 Jun. 0.0386 0.0344 0.0366
19:01-20:00, Sun., 14 Jun. 0.0394 0.0346 0.0366
18:01-19:00, Sun., 14 Jun. 0.0394 0.0345 0.0365
17:01-18:00, Sun., 14 Jun. 0.0383 0.0349 0.0366
16:01-17:00, Sun., 14 Jun. 0.0395 0.0346 0.0369
15:01-16:00, Sun., 14 Jun. 0.0402 0.0350 0.0372
14:01-15:00, Sun., 14 Jun. 0.0389 0.0347 0.0369
13:01-14:00, Sun., 14 Jun. 0.0392 0.0346 0.0368
12:01-13:00, Sun., 14 Jun. 0.0392 0.0352 0.0368
11:01-12:00, Sun., 14 Jun. 0.0391 0.0354 0.0369
10:01-11:00, Sun., 14 Jun. 0.0388 0.0346 0.0370
09:01-10:00, Sun., 14 Jun. 0.0398 0.0358 0.0373
08:01-09:00, Sun., 14 Jun. 0.0394 0.0346 0.0374
07:01-08:00, Sun., 14 Jun. 0.0397 0.0351 0.0371
06:01-07:00, Sun., 14 Jun. 0.0400 0.0360 0.0376
05:01-06:00, Sun., 14 Jun. 0.0393 0.0349 0.0374
04:01-05:00, Sun., 14 Jun. 0.0402 0.0347 0.0376
03:01-04:00, Sun., 14 Jun. 0.0400 0.0342 0.0372
02:01-03:00, Sun., 14 Jun. 0.0388 0.0351 0.0370
01:01-02:00, Sun., 14 Jun. 0.0388 0.0349 0.0368
00:01-01:00, Sun., 14 Jun. 0.0391 0.0343 0.0367
23:01-24:00, Sat., 13 Jun. 0.0384 0.0346 0.0367
22:01-23:00, Sat., 13 Jun. 0.0393 0.0343 0.0367
21:01-22:00, Sat., 13 Jun. 0.0398 0.0345 0.0367
20:01-21:00, Sat., 13 Jun. 0.0389 0.0345 0.0363
19:01-20:00, Sat., 13 Jun. 0.0390 0.0343 0.0366
18:01-19:00, Sat., 13 Jun. 0.0391 0.0343 0.0365
17:01-18:00, Sat., 13 Jun. 0.0396 0.0343 0.0367
16:01-17:00, Sat., 13 Jun. 0.0399 0.0352 0.0374
15:01-16:00, Sat., 13 Jun. 0.0401 0.0360 0.0375
14:01-15:00, Sat., 13 Jun. 0.0402 0.0350 0.0374
13:01-14:00, Sat., 13 Jun. 0.0398 0.0356 0.0374
12:01-13:00, Sat., 13 Jun. 0.0393 0.0343 0.0371
11:01-12:00, Sat., 13 Jun. 0.0409 0.0339 0.0371
10:01-11:00, Sat., 13 Jun. 0.0391 0.0348 0.0371
09:01-10:00, Sat., 13 Jun. 0.0393 0.0356 0.0374
08:01-09:00, Sat., 13 Jun. 0.0385 0.0345 0.0369
07:01-08:00, Sat., 13 Jun. 0.0395 0.0345 0.0370
06:01-07:00, Sat., 13 Jun. 0.0383 0.0346 0.0367
05:01-06:00, Sat., 13 Jun. 0.0385 0.0339 0.0363
04:01-05:00, Sat., 13 Jun. 0.0382 0.0340 0.0362
03:01-04:00, Sat., 13 Jun. 0.0381 0.0343 0.0361
02:01-03:00, Sat., 13 Jun. 0.0381 0.0336 0.0362
01:01-02:00, Sat., 13 Jun. 0.0382 0.0342 0.0365
00:01-01:00, Sat., 13 Jun. 0.0384 0.0346 0.0366
23:01-24:00, Fri., 12 Jun. 0.0403 0.0338 0.0365
22:01-23:00, Fri., 12 Jun. 0.0397 0.0337 0.0361
21:01-22:00, Fri., 12 Jun. 0.0377 0.0346 0.0361
20:01-21:00, Fri., 12 Jun. 0.0386 0.0339 0.0363
19:01-20:00, Fri., 12 Jun. 0.0393 0.0344 0.0363
18:01-19:00, Fri., 12 Jun. 0.0386 0.0345 0.0363
17:01-18:00, Fri., 12 Jun. 0.0401 0.0343 0.0369
16:01-17:00, Fri., 12 Jun. 0.0419 0.0360 0.0389
15:01-16:00, Fri., 12 Jun. 0.0525 0.0406 0.0458
14:01-15:00, Fri., 12 Jun. 0.0547 0.0384 0.0493
13:01-14:00, Fri., 12 Jun. 0.0401 0.0339 0.0375
12:01-13:00, Fri., 12 Jun. 0.0403 0.0346 0.0372
11:01-12:00, Fri., 12 Jun. 0.0404 0.0349 0.0373
10:01-11:00, Fri., 12 Jun. 0.0392 0.0348 0.0369
09:01-10:00, Fri., 12 Jun. 0.0393 0.0336 0.0368
08:01-09:00, Fri., 12 Jun. 0.0384 0.0345 0.0364
07:01-08:00, Fri., 12 Jun. 0.0384 0.0339 0.0366
06:01-07:00, Fri., 12 Jun. 0.0383 0.0341 0.0359
05:01-06:00, Fri., 12 Jun. 0.0381 0.0336 0.0360