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
07:01-08:00, Sat., 22 Aug. 0.0408 0.0361 0.0388
06:01-07:00, Sat., 22 Aug. 0.0406 0.0361 0.0384
05:01-06:00, Sat., 22 Aug. 0.0413 0.0363 0.0383
04:01-05:00, Sat., 22 Aug. 0.0402 0.0359 0.0382
03:01-04:00, Sat., 22 Aug. 0.0416 0.0360 0.0385
02:01-03:00, Sat., 22 Aug. 0.0403 0.0364 0.0384
01:01-02:00, Sat., 22 Aug. 0.0398 0.0355 0.0379
00:01-01:00, Sat., 22 Aug. 0.0408 0.0361 0.0385
23:01-24:00, Fri., 21 Aug. 0.0403 0.0358 0.0384
22:01-23:00, Fri., 21 Aug. 0.0401 0.0358 0.0382
21:01-22:00, Fri., 21 Aug. 0.0411 0.0360 0.0386
20:01-21:00, Fri., 21 Aug. 0.0413 0.0362 0.0386
19:01-20:00, Fri., 21 Aug. 0.0401 0.0358 0.0380
18:01-19:00, Fri., 21 Aug. 0.0418 0.0358 0.0384
17:01-18:00, Fri., 21 Aug. 0.0416 0.0356 0.0385
16:01-17:00, Fri., 21 Aug. 0.0409 0.0360 0.0386
15:01-16:00, Fri., 21 Aug. 0.0416 0.0370 0.0397
14:01-15:00, Fri., 21 Aug. 0.0423 0.0363 0.0392
13:01-14:00, Fri., 21 Aug. 0.0406 0.0346 0.0379
12:01-13:00, Fri., 21 Aug. 0.0403 0.0356 0.0380
11:01-12:00, Fri., 21 Aug. 0.0406 0.0354 0.0378
10:01-11:00, Fri., 21 Aug. 0.0405 0.0363 0.0382
09:01-10:00, Fri., 21 Aug. 0.0407 0.0349 0.0379
08:01-09:00, Fri., 21 Aug. 0.0413 0.0354 0.0383
07:01-08:00, Fri., 21 Aug. 0.0402 0.0362 0.0380
06:01-07:00, Fri., 21 Aug. 0.0404 0.0359 0.0382
05:01-06:00, Fri., 21 Aug. 0.0405 0.0359 0.0382
04:01-05:00, Fri., 21 Aug. 0.0407 0.0353 0.0383
03:01-04:00, Fri., 21 Aug. 0.0399 0.0356 0.0380
02:01-03:00, Fri., 21 Aug. 0.0404 0.0347 0.0382
01:01-02:00, Fri., 21 Aug. 0.0412 0.0345 0.0380
00:01-01:00, Fri., 21 Aug. 0.0409 0.0353 0.0380
23:01-24:00, Thu., 20 Aug. 0.0398 0.0360 0.0380
22:01-23:00, Thu., 20 Aug. 0.0405 0.0357 0.0379
21:01-22:00, Thu., 20 Aug. 0.0401 0.0358 0.0381
20:01-21:00, Thu., 20 Aug. 0.0396 0.0360 0.0379
19:01-20:00, Thu., 20 Aug. 0.0402 0.0356 0.0380
18:01-19:00, Thu., 20 Aug. 0.0398 0.0359 0.0378
17:01-18:00, Thu., 20 Aug. 0.0406 0.0363 0.0378
16:01-17:00, Thu., 20 Aug. 0.0403 0.0353 0.0383
15:01-16:00, Thu., 20 Aug. 0.0398 0.0349 0.0378
14:01-15:00, Thu., 20 Aug. 0.0403 0.0356 0.0377
13:01-14:00, Thu., 20 Aug. 0.0398 0.0354 0.0376
12:01-13:00, Thu., 20 Aug. 0.0401 0.0345 0.0376
11:01-12:00, Thu., 20 Aug. 0.0398 0.0345 0.0372
10:01-11:00, Thu., 20 Aug. 0.0401 0.0346 0.0372
09:01-10:00, Thu., 20 Aug. 0.0395 0.0353 0.0375
08:01-09:00, Thu., 20 Aug. 0.0401 0.0353 0.0380
07:01-08:00, Thu., 20 Aug. 0.0400 0.0350 0.0377
06:01-07:00, Thu., 20 Aug. 0.0399 0.0358 0.0379
05:01-06:00, Thu., 20 Aug. 0.0401 0.0353 0.0379
04:01-05:00, Thu., 20 Aug. 0.0395 0.0349 0.0377
03:01-04:00, Thu., 20 Aug. 0.0407 0.0356 0.0377
02:01-03:00, Thu., 20 Aug. 0.0407 0.0355 0.0379
01:01-02:00, Thu., 20 Aug. 0.0395 0.0358 0.0378
00:01-01:00, Thu., 20 Aug. 0.0401 0.0352 0.0377
23:01-24:00, Wed., 19 Aug. 0.0397 0.0353 0.0377
22:01-23:00, Wed., 19 Aug. 0.0395 0.0361 0.0374
21:01-22:00, Wed., 19 Aug. 0.0404 0.0353 0.0376
20:01-21:00, Wed., 19 Aug. 0.0399 0.0351 0.0376
19:01-20:00, Wed., 19 Aug. 0.0395 0.0359 0.0377
18:01-19:00, Wed., 19 Aug. 0.0399 0.0349 0.0377
17:01-18:00, Wed., 19 Aug. 0.0407 0.0349 0.0379
16:01-17:00, Wed., 19 Aug. 0.0402 0.0355 0.0381
15:01-16:00, Wed., 19 Aug. 0.0402 0.0359 0.0377
14:01-15:00, Wed., 19 Aug. 0.0401 0.0354 0.0376
13:01-14:00, Wed., 19 Aug. 0.0403 0.0345 0.0371
12:01-13:00, Wed., 19 Aug. 0.0396 0.0345 0.0375
11:01-12:00, Wed., 19 Aug. 0.0402 0.0356 0.0376
10:01-11:00, Wed., 19 Aug. 0.0402 0.0349 0.0375
09:01-10:00, Wed., 19 Aug. 0.0394 0.0345 0.0375
08:01-09:00, Wed., 19 Aug. 0.0392 0.0343 0.0372
07:01-08:00, Wed., 19 Aug. 0.0406 0.0353 0.0376
06:01-07:00, Wed., 19 Aug. 0.0400 0.0356 0.0376
05:01-06:00, Wed., 19 Aug. 0.0402 0.0362 0.0379
04:01-05:00, Wed., 19 Aug. 0.0401 0.0353 0.0378
03:01-04:00, Wed., 19 Aug. 0.0406 0.0358 0.0376
02:01-03:00, Wed., 19 Aug. 0.0391 0.0352 0.0375
01:01-02:00, Wed., 19 Aug. 0.0405 0.0356 0.0376
00:01-01:00, Wed., 19 Aug. 0.0392 0.0349 0.0375
23:01-24:00, Tue., 18 Aug. 0.0395 0.0349 0.0373
22:01-23:00, Tue., 18 Aug. 0.0400 0.0345 0.0371
21:01-22:00, Tue., 18 Aug. 0.0402 0.0345 0.0375
20:01-21:00, Tue., 18 Aug. 0.0398 0.0353 0.0375
19:01-20:00, Tue., 18 Aug. 0.0401 0.0352 0.0376
18:01-19:00, Tue., 18 Aug. 0.0397 0.0355 0.0372
17:01-18:00, Tue., 18 Aug. 0.0399 0.0356 0.0377
16:01-17:00, Tue., 18 Aug. 0.0400 0.0357 0.0374
15:01-16:00, Tue., 18 Aug. 0.0406 0.0347 0.0375
14:01-15:00, Tue., 18 Aug. 0.0398 0.0350 0.0372
13:01-14:00, Tue., 18 Aug. 0.0392 0.0347 0.0372
12:01-13:00, Tue., 18 Aug. 0.0399 0.0343 0.0370
11:01-12:00, Tue., 18 Aug. 0.0393 0.0349 0.0369
10:01-11:00, Tue., 18 Aug. 0.0398 0.0352 0.0371
09:01-10:00, Tue., 18 Aug. 0.0394 0.0345 0.0372
08:01-09:00, Tue., 18 Aug. 0.0405 0.0352 0.0373
07:01-08:00, Tue., 18 Aug. 0.0398 0.0357 0.0380
06:01-07:00, Tue., 18 Aug. 0.0394 0.0349 0.0372
05:01-06:00, Tue., 18 Aug. 0.0392 0.0349 0.0369
04:01-05:00, Tue., 18 Aug. 0.0389 0.0349 0.0370
03:01-04:00, Tue., 18 Aug. 0.0391 0.0351 0.0369
02:01-03:00, Tue., 18 Aug. 0.0401 0.0353 0.0378
01:01-02:00, Tue., 18 Aug. 0.0403 0.0359 0.0380
00:01-01:00, Tue., 18 Aug. 0.0406 0.0352 0.0377
23:01-24:00, Mon., 17 Aug. 0.0393 0.0348 0.0372
22:01-23:00, Mon., 17 Aug. 0.0402 0.0355 0.0370
21:01-22:00, Mon., 17 Aug. 0.0395 0.0353 0.0373
20:01-21:00, Mon., 17 Aug. 0.0392 0.0350 0.0371
19:01-20:00, Mon., 17 Aug. 0.0390 0.0346 0.0370
18:01-19:00, Mon., 17 Aug. 0.0394 0.0348 0.0371
17:01-18:00, Mon., 17 Aug. 0.0386 0.0341 0.0370
16:01-17:00, Mon., 17 Aug. 0.0397 0.0352 0.0369
15:01-16:00, Mon., 17 Aug. 0.0408 0.0349 0.0374
14:01-15:00, Mon., 17 Aug. 0.0392 0.0353 0.0374
13:01-14:00, Mon., 17 Aug. 0.0402 0.0356 0.0373
12:01-13:00, Mon., 17 Aug. 0.0394 0.0345 0.0370
11:01-12:00, Mon., 17 Aug. 0.0391 0.0339 0.0370
10:01-11:00, Mon., 17 Aug. 0.0388 0.0343 0.0368
09:01-10:00, Mon., 17 Aug. 0.0395 0.0345 0.0371
08:01-09:00, Mon., 17 Aug. 0.0389 0.0347 0.0366
07:01-08:00, Mon., 17 Aug. 0.0388 0.0343 0.0362
06:01-07:00, Mon., 17 Aug. 0.0378 0.0336 0.0361
05:01-06:00, Mon., 17 Aug. 0.0391 0.0342 0.0362
04:01-05:00, Mon., 17 Aug. 0.0384 0.0337 0.0361
03:01-04:00, Mon., 17 Aug. 0.0385 0.0343 0.0363
02:01-03:00, Mon., 17 Aug. 0.0383 0.0341 0.0361
01:01-02:00, Mon., 17 Aug. 0.0387 0.0336 0.0361
00:01-01:00, Mon., 17 Aug. 0.0379 0.0322 0.0357
23:01-24:00, Sun., 16 Aug. 0.0388 0.0332 0.0360
22:01-23:00, Sun., 16 Aug. 0.0382 0.0339 0.0358
21:01-22:00, Sun., 16 Aug. 0.0384 0.0336 0.0358
20:01-21:00, Sun., 16 Aug. 0.0389 0.0332 0.0359
19:01-20:00, Sun., 16 Aug. 0.0383 0.0329 0.0362
18:01-19:00, Sun., 16 Aug. 0.0377 0.0338 0.0362
17:01-18:00, Sun., 16 Aug. 0.0388 0.0349 0.0369
16:01-17:00, Sun., 16 Aug. 0.0405 0.0344 0.0378
15:01-16:00, Sun., 16 Aug. 0.0409 0.0356 0.0386
14:01-15:00, Sun., 16 Aug. 0.0412 0.0367 0.0386
13:01-14:00, Sun., 16 Aug. 0.0414 0.0367 0.0391
12:01-13:00, Sun., 16 Aug. 0.0400 0.0354 0.0375
11:01-12:00, Sun., 16 Aug. 0.0399 0.0355 0.0372
10:01-11:00, Sun., 16 Aug. 0.0388 0.0350 0.0370
09:01-10:00, Sun., 16 Aug. 0.0397 0.0350 0.0370
08:01-09:00, Sun., 16 Aug. 0.0387 0.0345 0.0367
07:01-08:00, Sun., 16 Aug. 0.0391 0.0334 0.0366
06:01-07:00, Sun., 16 Aug. 0.0394 0.0343 0.0364
05:01-06:00, Sun., 16 Aug. 0.0384 0.0339 0.0364
04:01-05:00, Sun., 16 Aug. 0.0383 0.0351 0.0365
03:01-04:00, Sun., 16 Aug. 0.0383 0.0344 0.0361
02:01-03:00, Sun., 16 Aug. 0.0388 0.0339 0.0362
01:01-02:00, Sun., 16 Aug. 0.0386 0.0335 0.0363
00:01-01:00, Sun., 16 Aug. 0.0381 0.0337 0.0360
23:01-24:00, Sat., 15 Aug. 0.0393 0.0333 0.0362
22:01-23:00, Sat., 15 Aug. 0.0388 0.0339 0.0362
21:01-22:00, Sat., 15 Aug. 0.0394 0.0342 0.0363
20:01-21:00, Sat., 15 Aug. 0.0393 0.0336 0.0362
19:01-20:00, Sat., 15 Aug. 0.0383 0.0336 0.0363
18:01-19:00, Sat., 15 Aug. 0.0389 0.0346 0.0367
17:01-18:00, Sat., 15 Aug. 0.0390 0.0339 0.0369
16:01-17:00, Sat., 15 Aug. 0.0386 0.0347 0.0369
15:01-16:00, Sat., 15 Aug. 0.0394 0.0345 0.0370
14:01-15:00, Sat., 15 Aug. 0.0402 0.0353 0.0372
13:01-14:00, Sat., 15 Aug. 0.0391 0.0343 0.0368
12:01-13:00, Sat., 15 Aug. 0.0395 0.0340 0.0372
11:01-12:00, Sat., 15 Aug. 0.0388 0.0348 0.0368
10:01-11:00, Sat., 15 Aug. 0.0388 0.0349 0.0368
09:01-10:00, Sat., 15 Aug. 0.0390 0.0331 0.0368
08:01-09:00, Sat., 15 Aug. 0.0391 0.0343 0.0367
07:01-08:00, Sat., 15 Aug. 0.0384 0.0344 0.0367
06:01-07:00, Sat., 15 Aug. 0.0393 0.0338 0.0362
05:01-06:00, Sat., 15 Aug. 0.0376 0.0345 0.0361
04:01-05:00, Sat., 15 Aug. 0.0382 0.0336 0.0360
03:01-04:00, Sat., 15 Aug. 0.0383 0.0333 0.0359
02:01-03:00, Sat., 15 Aug. 0.0395 0.0341 0.0362
01:01-02:00, Sat., 15 Aug. 0.0381 0.0338 0.0360
00:01-01:00, Sat., 15 Aug. 0.0376 0.0339 0.0363
23:01-24:00, Fri., 14 Aug. 0.0382 0.0339 0.0360
22:01-23:00, Fri., 14 Aug. 0.0402 0.0339 0.0360
21:01-22:00, Fri., 14 Aug. 0.0391 0.0348 0.0370
20:01-21:00, Fri., 14 Aug. 0.0401 0.0346 0.0368
19:01-20:00, Fri., 14 Aug. 0.0398 0.0354 0.0370
18:01-19:00, Fri., 14 Aug. 0.0395 0.0350 0.0368
17:01-18:00, Fri., 14 Aug. 0.0395 0.0351 0.0371
16:01-17:00, Fri., 14 Aug. 0.0392 0.0349 0.0370
15:01-16:00, Fri., 14 Aug. 0.0398 0.0350 0.0375
14:01-15:00, Fri., 14 Aug. 0.0425 0.0347 0.0373
13:01-14:00, Fri., 14 Aug. 0.0397 0.0346 0.0374
12:01-13:00, Fri., 14 Aug. 0.0398 0.0354 0.0372
11:01-12:00, Fri., 14 Aug. 0.0396 0.0340 0.0371
10:01-11:00, Fri., 14 Aug. 0.0396 0.0345 0.0372
09:01-10:00, Fri., 14 Aug. 0.0395 0.0346 0.0366
08:01-09:00, Fri., 14 Aug. 0.0381 0.0346 0.0363
07:01-08:00, Fri., 14 Aug. 0.0388 0.0345 0.0366
06:01-07:00, Fri., 14 Aug. 0.0389 0.0344 0.0370
05:01-06:00, Fri., 14 Aug. 0.0419 0.0359 0.0392
04:01-05:00, Fri., 14 Aug. 0.0426 0.0384 0.0405
03:01-04:00, Fri., 14 Aug. 0.0426 0.0344 0.0384
02:01-03:00, Fri., 14 Aug. 0.0412 0.0361 0.0383
01:01-02:00, Fri., 14 Aug. 0.0423 0.0378 0.0395
00:01-01:00, Fri., 14 Aug. 0.0426 0.0369 0.0395
23:01-24:00, Thu., 13 Aug. 0.0423 0.0367 0.0390
22:01-23:00, Thu., 13 Aug. 0.0420 0.0367 0.0388
21:01-22:00, Thu., 13 Aug. 0.0402 0.0359 0.0374
20:01-21:00, Thu., 13 Aug. 0.0402 0.0349 0.0374
19:01-20:00, Thu., 13 Aug. 0.0397 0.0353 0.0371
18:01-19:00, Thu., 13 Aug. 0.0381 0.0325 0.0351
17:01-18:00, Thu., 13 Aug. 0.0366 0.0295 0.0340
16:01-17:00, Thu., 13 Aug. 0.0333 0.0277 0.0308
15:01-16:00, Thu., 13 Aug. 0.0385 0.0304 0.0360
14:01-15:00, Thu., 13 Aug. 0.0396 0.0348 0.0374
13:01-14:00, Thu., 13 Aug. 0.0394 0.0357 0.0375
12:01-13:00, Thu., 13 Aug. 0.0409 0.0359 0.0381
11:01-12:00, Thu., 13 Aug. 0.0417 0.0364 0.0386
10:01-11:00, Thu., 13 Aug. 0.0398 0.0353 0.0375
09:01-10:00, Thu., 13 Aug. 0.0401 0.0353 0.0376
08:01-09:00, Thu., 13 Aug. 0.0409 0.0346 0.0378
07:01-08:00, Thu., 13 Aug. 0.0416 0.0363 0.0387
06:01-07:00, Thu., 13 Aug. 0.0419 0.0369 0.0392
05:01-06:00, Thu., 13 Aug. 0.0398 0.0351 0.0374
04:01-05:00, Thu., 13 Aug. 0.0393 0.0349 0.0371
03:01-04:00, Thu., 13 Aug. 0.0385 0.0345 0.0368
02:01-03:00, Thu., 13 Aug. 0.0389 0.0346 0.0368
01:01-02:00, Thu., 13 Aug. 0.0388 0.0335 0.0366
00:01-01:00, Thu., 13 Aug. 0.0384 0.0345 0.0367
23:01-24:00, Wed., 12 Aug. 0.0393 0.0344 0.0365
22:01-23:00, Wed., 12 Aug. 0.0392 0.0346 0.0365
21:01-22:00, Wed., 12 Aug. 0.0391 0.0345 0.0368
20:01-21:00, Wed., 12 Aug. 0.0390 0.0345 0.0367
19:01-20:00, Wed., 12 Aug. 0.0400 0.0349 0.0371
18:01-19:00, Wed., 12 Aug. 0.0419 0.0357 0.0390
17:01-18:00, Wed., 12 Aug. 0.0427 0.0386 0.0408
16:01-17:00, Wed., 12 Aug. 0.0462 0.0390 0.0429
15:01-16:00, Wed., 12 Aug. 0.0421 0.0359 0.0385
14:01-15:00, Wed., 12 Aug. 0.0395 0.0344 0.0377
13:01-14:00, Wed., 12 Aug. 0.0407 0.0354 0.0381
12:01-13:00, Wed., 12 Aug. 0.0417 0.0363 0.0391
11:01-12:00, Wed., 12 Aug. 0.0421 0.0356 0.0396
10:01-11:00, Wed., 12 Aug. 0.0398 0.0351 0.0373
09:01-10:00, Wed., 12 Aug. 0.0391 0.0349 0.0369
08:01-09:00, Wed., 12 Aug. 0.0405 0.0349 0.0374