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
22:01-23:00, Mon., 20 Apr. 0.0405 0.0360 0.0376
21:01-22:00, Mon., 20 Apr. 0.0397 0.0355 0.0375
20:01-21:00, Mon., 20 Apr. 0.0398 0.0352 0.0375
19:01-20:00, Mon., 20 Apr. 0.0398 0.0356 0.0378
18:01-19:00, Mon., 20 Apr. 0.0398 0.0356 0.0376
17:01-18:00, Mon., 20 Apr. 0.0400 0.0354 0.0375
16:01-17:00, Mon., 20 Apr. 0.0401 0.0352 0.0377
15:01-16:00, Mon., 20 Apr. 0.0405 0.0360 0.0382
14:01-15:00, Mon., 20 Apr. 0.0406 0.0357 0.0384
13:01-14:00, Mon., 20 Apr. 0.0404 0.0362 0.0383
12:01-13:00, Mon., 20 Apr. 0.0405 0.0360 0.0383
11:01-12:00, Mon., 20 Apr. 0.0409 0.0356 0.0386
10:01-11:00, Mon., 20 Apr. 0.0404 0.0362 0.0380
09:01-10:00, Mon., 20 Apr. 0.0398 0.0357 0.0380
08:01-09:00, Mon., 20 Apr. 0.0409 0.0355 0.0380
07:01-08:00, Mon., 20 Apr. 0.0403 0.0352 0.0380
06:01-07:00, Mon., 20 Apr. 0.0399 0.0349 0.0379
05:01-06:00, Mon., 20 Apr. 0.0405 0.0348 0.0378
04:01-05:00, Mon., 20 Apr. 0.0407 0.0358 0.0375
03:01-04:00, Mon., 20 Apr. 0.0398 0.0345 0.0375
02:01-03:00, Mon., 20 Apr. 0.0397 0.0355 0.0376
01:01-02:00, Mon., 20 Apr. 0.0403 0.0347 0.0375
00:01-01:00, Mon., 20 Apr. 0.0401 0.0354 0.0377
23:01-24:00, Sun., 19 Apr. 0.0405 0.0348 0.0377
22:01-23:00, Sun., 19 Apr. 0.0399 0.0354 0.0376
21:01-22:00, Sun., 19 Apr. 0.0401 0.0355 0.0376
20:01-21:00, Sun., 19 Apr. 0.0398 0.0352 0.0376
19:01-20:00, Sun., 19 Apr. 0.0403 0.0345 0.0378
18:01-19:00, Sun., 19 Apr. 0.0401 0.0358 0.0379
17:01-18:00, Sun., 19 Apr. 0.0409 0.0357 0.0377
16:01-17:00, Sun., 19 Apr. 0.0397 0.0351 0.0372
15:01-16:00, Sun., 19 Apr. 0.0409 0.0351 0.0380
14:01-15:00, Sun., 19 Apr. 0.0403 0.0350 0.0378
13:01-14:00, Sun., 19 Apr. 0.0405 0.0358 0.0382
12:01-13:00, Sun., 19 Apr. 0.0402 0.0353 0.0378
11:01-12:00, Sun., 19 Apr. 0.0402 0.0350 0.0377
10:01-11:00, Sun., 19 Apr. 0.0407 0.0359 0.0379
09:01-10:00, Sun., 19 Apr. 0.0406 0.0356 0.0381
08:01-09:00, Sun., 19 Apr. 0.0401 0.0363 0.0379
07:01-08:00, Sun., 19 Apr. 0.0404 0.0347 0.0376
06:01-07:00, Sun., 19 Apr. 0.0397 0.0346 0.0375
05:01-06:00, Sun., 19 Apr. 0.0388 0.0343 0.0371
04:01-05:00, Sun., 19 Apr. 0.0390 0.0343 0.0369
03:01-04:00, Sun., 19 Apr. 0.0394 0.0349 0.0370
02:01-03:00, Sun., 19 Apr. 0.0398 0.0350 0.0368
01:01-02:00, Sun., 19 Apr. 0.0394 0.0345 0.0368
00:01-01:00, Sun., 19 Apr. 0.0389 0.0345 0.0366
23:01-24:00, Sat., 18 Apr. 0.0391 0.0347 0.0364
22:01-23:00, Sat., 18 Apr. 0.0388 0.0344 0.0366
21:01-22:00, Sat., 18 Apr. 0.0392 0.0352 0.0371
20:01-21:00, Sat., 18 Apr. 0.0394 0.0345 0.0369
19:01-20:00, Sat., 18 Apr. 0.0398 0.0347 0.0368
18:01-19:00, Sat., 18 Apr. 0.0402 0.0351 0.0372
17:01-18:00, Sat., 18 Apr. 0.0390 0.0353 0.0371
16:01-17:00, Sat., 18 Apr. 0.0388 0.0346 0.0369
15:01-16:00, Sat., 18 Apr. 0.0386 0.0355 0.0369
14:01-15:00, Sat., 18 Apr. 0.0395 0.0350 0.0369
13:01-14:00, Sat., 18 Apr. 0.0396 0.0349 0.0370
12:01-13:00, Sat., 18 Apr. 0.0392 0.0347 0.0367
11:01-12:00, Sat., 18 Apr. 0.0395 0.0349 0.0370
10:01-11:00, Sat., 18 Apr. 0.0401 0.0354 0.0372
09:01-10:00, Sat., 18 Apr. 0.0388 0.0345 0.0368
08:01-09:00, Sat., 18 Apr. 0.0388 0.0339 0.0369
07:01-08:00, Sat., 18 Apr. 0.0393 0.0351 0.0371
06:01-07:00, Sat., 18 Apr. 0.0392 0.0350 0.0368
05:01-06:00, Sat., 18 Apr. 0.0388 0.0342 0.0369
04:01-05:00, Sat., 18 Apr. 0.0388 0.0333 0.0367
03:01-04:00, Sat., 18 Apr. 0.0384 0.0345 0.0366
02:01-03:00, Sat., 18 Apr. 0.0382 0.0347 0.0366
01:01-02:00, Sat., 18 Apr. 0.0385 0.0342 0.0360
00:01-01:00, Sat., 18 Apr. 0.0389 0.0341 0.0362
23:01-24:00, Fri., 17 Apr. 0.0395 0.0345 0.0365
22:01-23:00, Fri., 17 Apr. 0.0382 0.0329 0.0362
21:01-22:00, Fri., 17 Apr. 0.0389 0.0343 0.0362
20:01-21:00, Fri., 17 Apr. 0.0383 0.0343 0.0363
19:01-20:00, Fri., 17 Apr. 0.0385 0.0346 0.0362
18:01-19:00, Fri., 17 Apr. 0.0391 0.0348 0.0365
17:01-18:00, Fri., 17 Apr. 0.0391 0.0346 0.0366
16:01-17:00, Fri., 17 Apr. 0.0389 0.0349 0.0369
15:01-16:00, Fri., 17 Apr. 0.0390 0.0340 0.0369
14:01-15:00, Fri., 17 Apr. 0.0401 0.0349 0.0372
13:01-14:00, Fri., 17 Apr. 0.0391 0.0351 0.0369
12:01-13:00, Fri., 17 Apr. 0.0401 0.0348 0.0370
11:01-12:00, Fri., 17 Apr. 0.0400 0.0351 0.0370
10:01-11:00, Fri., 17 Apr. 0.0398 0.0349 0.0370
09:01-10:00, Fri., 17 Apr. 0.0392 0.0347 0.0366
08:01-09:00, Fri., 17 Apr. 0.0382 0.0339 0.0362
07:01-08:00, Fri., 17 Apr. 0.0384 0.0345 0.0363
06:01-07:00, Fri., 17 Apr. 0.0391 0.0337 0.0367
05:01-06:00, Fri., 17 Apr. 0.0382 0.0339 0.0362
04:01-05:00, Fri., 17 Apr. 0.0389 0.0346 0.0363
03:01-04:00, Fri., 17 Apr. 0.0382 0.0345 0.0364
02:01-03:00, Fri., 17 Apr. 0.0388 0.0348 0.0362
01:01-02:00, Fri., 17 Apr. 0.0384 0.0343 0.0363
00:01-01:00, Fri., 17 Apr. 0.0381 0.0336 0.0361
23:01-24:00, Thu., 16 Apr. 0.0389 0.0341 0.0364
22:01-23:00, Thu., 16 Apr. 0.0379 0.0336 0.0361
21:01-22:00, Thu., 16 Apr. 0.0381 0.0339 0.0356
20:01-21:00, Thu., 16 Apr. 0.0383 0.0336 0.0357
19:01-20:00, Thu., 16 Apr. 0.0379 0.0339 0.0361
18:01-19:00, Thu., 16 Apr. 0.0390 0.0339 0.0363
17:01-18:00, Thu., 16 Apr. 0.0388 0.0343 0.0365
16:01-17:00, Thu., 16 Apr. 0.0386 0.0344 0.0366
15:01-16:00, Thu., 16 Apr. 0.0388 0.0349 0.0370
14:01-15:00, Thu., 16 Apr. 0.0393 0.0349 0.0373
13:01-14:00, Thu., 16 Apr. 0.0387 0.0347 0.0370
12:01-13:00, Thu., 16 Apr. 0.0392 0.0355 0.0371
11:01-12:00, Thu., 16 Apr. 0.0402 0.0349 0.0372
10:01-11:00, Thu., 16 Apr. 0.0396 0.0356 0.0374
09:01-10:00, Thu., 16 Apr. 0.0395 0.0348 0.0372
08:01-09:00, Thu., 16 Apr. 0.0391 0.0349 0.0366
07:01-08:00, Thu., 16 Apr. 0.0395 0.0344 0.0367
06:01-07:00, Thu., 16 Apr. 0.0395 0.0348 0.0369
05:01-06:00, Thu., 16 Apr. 0.0394 0.0351 0.0368
04:01-05:00, Thu., 16 Apr. 0.0398 0.0348 0.0378
03:01-04:00, Thu., 16 Apr. 0.0436 0.0363 0.0389
02:01-03:00, Thu., 16 Apr. 0.0435 0.0377 0.0411
01:01-02:00, Thu., 16 Apr. 0.0454 0.0387 0.0420
00:01-01:00, Thu., 16 Apr. 0.0447 0.0402 0.0422
23:01-24:00, Wed., 15 Apr. 0.0444 0.0404 0.0424
22:01-23:00, Wed., 15 Apr. 0.0464 0.0404 0.0429
21:01-22:00, Wed., 15 Apr. 0.0511 0.0422 0.0470
20:01-21:00, Wed., 15 Apr. 0.0524 0.0436 0.0480
19:01-20:00, Wed., 15 Apr. 0.0469 0.0418 0.0444
18:01-19:00, Wed., 15 Apr. 0.0447 0.0354 0.0391
17:01-18:00, Wed., 15 Apr. 0.0402 0.0349 0.0374
16:01-17:00, Wed., 15 Apr. 0.0401 0.0347 0.0374
15:01-16:00, Wed., 15 Apr. 0.0406 0.0357 0.0382
14:01-15:00, Wed., 15 Apr. 0.0406 0.0367 0.0383
13:01-14:00, Wed., 15 Apr. 0.0402 0.0357 0.0379
12:01-13:00, Wed., 15 Apr. 0.0416 0.0350 0.0381
11:01-12:00, Wed., 15 Apr. 0.0394 0.0351 0.0374
10:01-11:00, Wed., 15 Apr. 0.0393 0.0353 0.0373
09:01-10:00, Wed., 15 Apr. 0.0398 0.0345 0.0375
08:01-09:00, Wed., 15 Apr. 0.0399 0.0356 0.0375
07:01-08:00, Wed., 15 Apr. 0.0395 0.0347 0.0372
06:01-07:00, Wed., 15 Apr. 0.0394 0.0345 0.0374
05:01-06:00, Wed., 15 Apr. 0.0392 0.0356 0.0375
04:01-05:00, Wed., 15 Apr. 0.0401 0.0353 0.0373
03:01-04:00, Wed., 15 Apr. 0.0396 0.0340 0.0373
02:01-03:00, Wed., 15 Apr. 0.0388 0.0349 0.0371
01:01-02:00, Wed., 15 Apr. 0.0396 0.0354 0.0371
00:01-01:00, Wed., 15 Apr. 0.0389 0.0353 0.0369
23:01-24:00, Tue., 14 Apr. 0.0396 0.0350 0.0371
22:01-23:00, Tue., 14 Apr. 0.0398 0.0353 0.0374
21:01-22:00, Tue., 14 Apr. 0.0391 0.0354 0.0373
20:01-21:00, Tue., 14 Apr. 0.0394 0.0353 0.0371
19:01-20:00, Tue., 14 Apr. 0.0391 0.0356 0.0374
18:01-19:00, Tue., 14 Apr. 0.0398 0.0349 0.0373
17:01-18:00, Tue., 14 Apr. 0.0391 0.0350 0.0371
16:01-17:00, Tue., 14 Apr. 0.0398 0.0353 0.0373
15:01-16:00, Tue., 14 Apr. 0.0412 0.0364 0.0381
14:01-15:00, Tue., 14 Apr. 0.0407 0.0357 0.0381
13:01-14:00, Tue., 14 Apr. 0.0405 0.0356 0.0382
12:01-13:00, Tue., 14 Apr. 0.0411 0.0363 0.0381
11:01-12:00, Tue., 14 Apr. 0.0405 0.0353 0.0379
10:01-11:00, Tue., 14 Apr. 0.0401 0.0337 0.0374
09:01-10:00, Tue., 14 Apr. 0.0402 0.0343 0.0375
08:01-09:00, Tue., 14 Apr. 0.0405 0.0356 0.0375
07:01-08:00, Tue., 14 Apr. 0.0395 0.0346 0.0375
06:01-07:00, Tue., 14 Apr. 0.0400 0.0356 0.0377
05:01-06:00, Tue., 14 Apr. 0.0398 0.0355 0.0375
04:01-05:00, Tue., 14 Apr. 0.0390 0.0357 0.0373
03:01-04:00, Tue., 14 Apr. 0.0402 0.0345 0.0371
02:01-03:00, Tue., 14 Apr. 0.0390 0.0352 0.0370
01:01-02:00, Tue., 14 Apr. 0.0386 0.0344 0.0370
00:01-01:00, Tue., 14 Apr. 0.0391 0.0344 0.0368
23:01-24:00, Mon., 13 Apr. 0.0398 0.0345 0.0371
22:01-23:00, Mon., 13 Apr. 0.0393 0.0353 0.0374
21:01-22:00, Mon., 13 Apr. 0.0394 0.0344 0.0371
20:01-21:00, Mon., 13 Apr. 0.0387 0.0346 0.0371
19:01-20:00, Mon., 13 Apr. 0.0391 0.0345 0.0370
18:01-19:00, Mon., 13 Apr. 0.0405 0.0350 0.0372
17:01-18:00, Mon., 13 Apr. 0.0390 0.0349 0.0373
16:01-17:00, Mon., 13 Apr. 0.0398 0.0349 0.0373
15:01-16:00, Mon., 13 Apr. 0.0400 0.0355 0.0374
14:01-15:00, Mon., 13 Apr. 0.0398 0.0346 0.0372
13:01-14:00, Mon., 13 Apr. 0.0401 0.0352 0.0375
12:01-13:00, Mon., 13 Apr. 0.0401 0.0353 0.0376
11:01-12:00, Mon., 13 Apr. 0.0395 0.0353 0.0372
10:01-11:00, Mon., 13 Apr. 0.0395 0.0346 0.0373
09:01-10:00, Mon., 13 Apr. 0.0401 0.0357 0.0378
08:01-09:00, Mon., 13 Apr. 0.0406 0.0353 0.0382
07:01-08:00, Mon., 13 Apr. 0.0410 0.0353 0.0376
06:01-07:00, Mon., 13 Apr. 0.0395 0.0349 0.0375
05:01-06:00, Mon., 13 Apr. 0.0398 0.0353 0.0375
04:01-05:00, Mon., 13 Apr. 0.0398 0.0351 0.0371
03:01-04:00, Mon., 13 Apr. 0.0395 0.0336 0.0368
02:01-03:00, Mon., 13 Apr. 0.0391 0.0352 0.0367
01:01-02:00, Mon., 13 Apr. 0.0394 0.0347 0.0369
00:01-01:00, Mon., 13 Apr. 0.0398 0.0346 0.0368
23:01-24:00, Sun., 12 Apr. 0.0385 0.0345 0.0368
22:01-23:00, Sun., 12 Apr. 0.0391 0.0344 0.0368
21:01-22:00, Sun., 12 Apr. 0.0388 0.0339 0.0365
20:01-21:00, Sun., 12 Apr. 0.0389 0.0353 0.0369
19:01-20:00, Sun., 12 Apr. 0.0386 0.0349 0.0370
18:01-19:00, Sun., 12 Apr. 0.0387 0.0338 0.0369
17:01-18:00, Sun., 12 Apr. 0.0398 0.0347 0.0371
16:01-17:00, Sun., 12 Apr. 0.0379 0.0342 0.0363
15:01-16:00, Sun., 12 Apr. 0.0384 0.0337 0.0363
14:01-15:00, Sun., 12 Apr. 0.0400 0.0347 0.0369
13:01-14:00, Sun., 12 Apr. 0.0401 0.0347 0.0370
12:01-13:00, Sun., 12 Apr. 0.0395 0.0355 0.0374
11:01-12:00, Sun., 12 Apr. 0.0392 0.0353 0.0373
10:01-11:00, Sun., 12 Apr. 0.0389 0.0345 0.0367
09:01-10:00, Sun., 12 Apr. 0.0391 0.0348 0.0368
08:01-09:00, Sun., 12 Apr. 0.0385 0.0346 0.0367
07:01-08:00, Sun., 12 Apr. 0.0398 0.0343 0.0371
06:01-07:00, Sun., 12 Apr. 0.0391 0.0353 0.0370
05:01-06:00, Sun., 12 Apr. 0.0395 0.0350 0.0367
04:01-05:00, Sun., 12 Apr. 0.0389 0.0348 0.0371
03:01-04:00, Sun., 12 Apr. 0.0388 0.0353 0.0370
02:01-03:00, Sun., 12 Apr. 0.0383 0.0348 0.0368
01:01-02:00, Sun., 12 Apr. 0.0393 0.0343 0.0371
00:01-01:00, Sun., 12 Apr. 0.0405 0.0336 0.0370
23:01-24:00, Sat., 11 Apr. 0.0408 0.0345 0.0373
22:01-23:00, Sat., 11 Apr. 0.0390 0.0345 0.0370
21:01-22:00, Sat., 11 Apr. 0.0401 0.0345 0.0372
20:01-21:00, Sat., 11 Apr. 0.0391 0.0351 0.0371
19:01-20:00, Sat., 11 Apr. 0.0391 0.0354 0.0371
18:01-19:00, Sat., 11 Apr. 0.0391 0.0340 0.0368
17:01-18:00, Sat., 11 Apr. 0.0401 0.0351 0.0372
16:01-17:00, Sat., 11 Apr. 0.0408 0.0357 0.0377
15:01-16:00, Sat., 11 Apr. 0.0399 0.0360 0.0379
14:01-15:00, Sat., 11 Apr. 0.0402 0.0360 0.0380
13:01-14:00, Sat., 11 Apr. 0.0407 0.0360 0.0383
12:01-13:00, Sat., 11 Apr. 0.0408 0.0363 0.0381
11:01-12:00, Sat., 11 Apr. 0.0407 0.0352 0.0379
10:01-11:00, Sat., 11 Apr. 0.0402 0.0358 0.0384
09:01-10:00, Sat., 11 Apr. 0.0398 0.0348 0.0374
08:01-09:00, Sat., 11 Apr. 0.0400 0.0352 0.0374
07:01-08:00, Sat., 11 Apr. 0.0394 0.0352 0.0374
06:01-07:00, Sat., 11 Apr. 0.0391 0.0337 0.0365
05:01-06:00, Sat., 11 Apr. 0.0389 0.0347 0.0367
04:01-05:00, Sat., 11 Apr. 0.0387 0.0337 0.0365
03:01-04:00, Sat., 11 Apr. 0.0390 0.0345 0.0366
02:01-03:00, Sat., 11 Apr. 0.0389 0.0348 0.0368
01:01-02:00, Sat., 11 Apr. 0.0381 0.0343 0.0363
00:01-01:00, Sat., 11 Apr. 0.0395 0.0346 0.0367
23:01-24:00, Fri., 10 Apr. 0.0382 0.0344 0.0366