Radiation doses in the air / Measurement results by the hour (Kodaira)

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
15:01-16:00, Wed., 02 Apr. 0.0363 0.0308 0.0332
14:01-15:00, Wed., 02 Apr. 0.0358 0.0309 0.0337
13:01-14:00, Wed., 02 Apr. 0.0370 0.0305 0.0341
12:01-13:00, Wed., 02 Apr. 0.0374 0.0329 0.0350
11:01-12:00, Wed., 02 Apr. 0.0397 0.0325 0.0352
10:01-11:00, Wed., 02 Apr. 0.0400 0.0338 0.0366
09:01-10:00, Wed., 02 Apr. 0.0422 0.0364 0.0398
08:01-09:00, Wed., 02 Apr. 0.0415 0.0370 0.0393
07:01-08:00, Wed., 02 Apr. 0.0433 0.0375 0.0401
06:01-07:00, Wed., 02 Apr. 0.0436 0.0375 0.0409
05:01-06:00, Wed., 02 Apr. 0.0457 0.0402 0.0428
04:01-05:00, Wed., 02 Apr. 0.0479 0.0410 0.0443
03:01-04:00, Wed., 02 Apr. 0.0480 0.0422 0.0451
02:01-03:00, Wed., 02 Apr. 0.0472 0.0421 0.0444
01:01-02:00, Wed., 02 Apr. 0.0501 0.0429 0.0461
00:01-01:00, Wed., 02 Apr. 0.0494 0.0450 0.0473
23:01-24:00, Tue., 01 Apr. 0.0492 0.0426 0.0460
22:01-23:00, Tue., 01 Apr. 0.0485 0.0424 0.0458
21:01-22:00, Tue., 01 Apr. 0.0492 0.0403 0.0433
20:01-21:00, Tue., 01 Apr. 0.0466 0.0401 0.0438
19:01-20:00, Tue., 01 Apr. 0.0472 0.0408 0.0436
18:01-19:00, Tue., 01 Apr. 0.0466 0.0402 0.0432
17:01-18:00, Tue., 01 Apr. 0.0468 0.0425 0.0450
16:01-17:00, Tue., 01 Apr. 0.0470 0.0388 0.0427
15:01-16:00, Tue., 01 Apr. 0.0421 0.0343 0.0386
14:01-15:00, Tue., 01 Apr. 0.0423 0.0348 0.0388
13:01-14:00, Tue., 01 Apr. 0.0468 0.0394 0.0430
12:01-13:00, Tue., 01 Apr. 0.0475 0.0426 0.0448
11:01-12:00, Tue., 01 Apr. 0.0489 0.0429 0.0462
10:01-11:00, Tue., 01 Apr. 0.0489 0.0428 0.0462
09:01-10:00, Tue., 01 Apr. 0.0506 0.0446 0.0481
08:01-09:00, Tue., 01 Apr. 0.0516 0.0450 0.0478
07:01-08:00, Tue., 01 Apr. 0.0506 0.0450 0.0479
06:01-07:00, Tue., 01 Apr. 0.0486 0.0417 0.0456
05:01-06:00, Tue., 01 Apr. 0.0484 0.0438 0.0461
04:01-05:00, Tue., 01 Apr. 0.0513 0.0454 0.0480
03:01-04:00, Tue., 01 Apr. 0.0494 0.0406 0.0453
02:01-03:00, Tue., 01 Apr. 0.0465 0.0405 0.0429
01:01-02:00, Tue., 01 Apr. 0.0456 0.0375 0.0411
00:01-01:00, Tue., 01 Apr. 0.0415 0.0348 0.0376
23:01-24:00, Mon., 31 Mar. 0.0405 0.0354 0.0376
22:01-23:00, Mon., 31 Mar. 0.0395 0.0349 0.0372
21:01-22:00, Mon., 31 Mar. 0.0398 0.0340 0.0365
20:01-21:00, Mon., 31 Mar. 0.0370 0.0326 0.0348
19:01-20:00, Mon., 31 Mar. 0.0383 0.0323 0.0350
18:01-19:00, Mon., 31 Mar. 0.0363 0.0303 0.0340
17:01-18:00, Mon., 31 Mar. 0.0353 0.0303 0.0333
16:01-17:00, Mon., 31 Mar. 0.0356 0.0296 0.0333
15:01-16:00, Mon., 31 Mar. 0.0361 0.0315 0.0338
14:01-15:00, Mon., 31 Mar. 0.0359 0.0305 0.0330
13:01-14:00, Mon., 31 Mar. 0.0349 0.0308 0.0328
12:01-13:00, Mon., 31 Mar. 0.0349 0.0302 0.0327
11:01-12:00, Mon., 31 Mar. 0.0355 0.0301 0.0326
10:01-11:00, Mon., 31 Mar. 0.0353 0.0303 0.0326
09:01-10:00, Mon., 31 Mar. 0.0353 0.0310 0.0329
08:01-09:00, Mon., 31 Mar. 0.0350 0.0306 0.0328
07:01-08:00, Mon., 31 Mar. 0.0361 0.0314 0.0331
06:01-07:00, Mon., 31 Mar. 0.0354 0.0303 0.0328
05:01-06:00, Mon., 31 Mar. 0.0353 0.0304 0.0328
04:01-05:00, Mon., 31 Mar. 0.0362 0.0299 0.0328
03:01-04:00, Mon., 31 Mar. 0.0355 0.0303 0.0328
02:01-03:00, Mon., 31 Mar. 0.0353 0.0310 0.0329
01:01-02:00, Mon., 31 Mar. 0.0347 0.0303 0.0328
00:01-01:00, Mon., 31 Mar. 0.0357 0.0301 0.0328
23:01-24:00, Sun., 30 Mar. 0.0360 0.0301 0.0328
22:01-23:00, Sun., 30 Mar. 0.0352 0.0309 0.0329
21:01-22:00, Sun., 30 Mar. 0.0351 0.0308 0.0329
20:01-21:00, Sun., 30 Mar. 0.0346 0.0304 0.0326
19:01-20:00, Sun., 30 Mar. 0.0346 0.0296 0.0325
18:01-19:00, Sun., 30 Mar. 0.0356 0.0310 0.0328
17:01-18:00, Sun., 30 Mar. 0.0355 0.0302 0.0334
16:01-17:00, Sun., 30 Mar. 0.0362 0.0310 0.0332
15:01-16:00, Sun., 30 Mar. 0.0357 0.0306 0.0329
14:01-15:00, Sun., 30 Mar. 0.0358 0.0304 0.0331
13:01-14:00, Sun., 30 Mar. 0.0351 0.0305 0.0329
12:01-13:00, Sun., 30 Mar. 0.0363 0.0301 0.0333
11:01-12:00, Sun., 30 Mar. 0.0357 0.0311 0.0328
10:01-11:00, Sun., 30 Mar. 0.0352 0.0306 0.0328
09:01-10:00, Sun., 30 Mar. 0.0343 0.0307 0.0325
08:01-09:00, Sun., 30 Mar. 0.0349 0.0301 0.0325
07:01-08:00, Sun., 30 Mar. 0.0360 0.0311 0.0332
06:01-07:00, Sun., 30 Mar. 0.0350 0.0313 0.0330
05:01-06:00, Sun., 30 Mar. 0.0350 0.0306 0.0330
04:01-05:00, Sun., 30 Mar. 0.0357 0.0311 0.0336
03:01-04:00, Sun., 30 Mar. 0.0358 0.0311 0.0336
02:01-03:00, Sun., 30 Mar. 0.0356 0.0308 0.0329
01:01-02:00, Sun., 30 Mar. 0.0359 0.0296 0.0328
00:01-01:00, Sun., 30 Mar. 0.0353 0.0304 0.0327
23:01-24:00, Sat., 29 Mar. 0.0356 0.0303 0.0330
22:01-23:00, Sat., 29 Mar. 0.0353 0.0302 0.0328
21:01-22:00, Sat., 29 Mar. 0.0358 0.0311 0.0333
20:01-21:00, Sat., 29 Mar. 0.0367 0.0328 0.0346
19:01-20:00, Sat., 29 Mar. 0.0377 0.0332 0.0351
18:01-19:00, Sat., 29 Mar. 0.0394 0.0343 0.0366
17:01-18:00, Sat., 29 Mar. 0.0431 0.0370 0.0398
16:01-17:00, Sat., 29 Mar. 0.0457 0.0395 0.0420
15:01-16:00, Sat., 29 Mar. 0.0455 0.0381 0.0421
14:01-15:00, Sat., 29 Mar. 0.0444 0.0394 0.0415
13:01-14:00, Sat., 29 Mar. 0.0462 0.0416 0.0441
12:01-13:00, Sat., 29 Mar. 0.0509 0.0433 0.0471
11:01-12:00, Sat., 29 Mar. 0.0555 0.0480 0.0523
10:01-11:00, Sat., 29 Mar. 0.0603 0.0523 0.0567
09:01-10:00, Sat., 29 Mar. 0.0583 0.0520 0.0555
08:01-09:00, Sat., 29 Mar. 0.0588 0.0496 0.0535
07:01-08:00, Sat., 29 Mar. 0.0510 0.0367 0.0439
06:01-07:00, Sat., 29 Mar. 0.0425 0.0361 0.0388
05:01-06:00, Sat., 29 Mar. 0.0398 0.0334 0.0374
04:01-05:00, Sat., 29 Mar. 0.0355 0.0308 0.0335
03:01-04:00, Sat., 29 Mar. 0.0357 0.0317 0.0337
02:01-03:00, Sat., 29 Mar. 0.0358 0.0308 0.0334
01:01-02:00, Sat., 29 Mar. 0.0352 0.0302 0.0335
00:01-01:00, Sat., 29 Mar. 0.0352 0.0306 0.0334
23:01-24:00, Fri., 28 Mar. 0.0359 0.0316 0.0337
22:01-23:00, Fri., 28 Mar. 0.0360 0.0314 0.0341
21:01-22:00, Fri., 28 Mar. 0.0373 0.0322 0.0348
20:01-21:00, Fri., 28 Mar. 0.0407 0.0332 0.0373
19:01-20:00, Fri., 28 Mar. 0.0441 0.0381 0.0412
18:01-19:00, Fri., 28 Mar. 0.0405 0.0314 0.0351
17:01-18:00, Fri., 28 Mar. 0.0358 0.0304 0.0338
16:01-17:00, Fri., 28 Mar. 0.0370 0.0315 0.0337
15:01-16:00, Fri., 28 Mar. 0.0360 0.0317 0.0335
14:01-15:00, Fri., 28 Mar. 0.0367 0.0307 0.0334
13:01-14:00, Fri., 28 Mar. 0.0363 0.0320 0.0338
12:01-13:00, Fri., 28 Mar. 0.0360 0.0317 0.0339
11:01-12:00, Fri., 28 Mar. 0.0361 0.0318 0.0341
10:01-11:00, Fri., 28 Mar. 0.0367 0.0322 0.0346
09:01-10:00, Fri., 28 Mar. 0.0391 0.0332 0.0360
08:01-09:00, Fri., 28 Mar. 0.0449 0.0356 0.0405
07:01-08:00, Fri., 28 Mar. 0.0431 0.0355 0.0400
06:01-07:00, Fri., 28 Mar. 0.0384 0.0323 0.0347
05:01-06:00, Fri., 28 Mar. 0.0355 0.0306 0.0335
04:01-05:00, Fri., 28 Mar. 0.0351 0.0319 0.0338
03:01-04:00, Fri., 28 Mar. 0.0356 0.0306 0.0333
02:01-03:00, Fri., 28 Mar. 0.0356 0.0311 0.0332
01:01-02:00, Fri., 28 Mar. 0.0349 0.0314 0.0332
00:01-01:00, Fri., 28 Mar. 0.0356 0.0308 0.0332
23:01-24:00, Thu., 27 Mar. 0.0353 0.0306 0.0330
22:01-23:00, Thu., 27 Mar. 0.0360 0.0304 0.0330
21:01-22:00, Thu., 27 Mar. 0.0356 0.0304 0.0329
20:01-21:00, Thu., 27 Mar. 0.0367 0.0290 0.0331
19:01-20:00, Thu., 27 Mar. 0.0353 0.0304 0.0331
18:01-19:00, Thu., 27 Mar. 0.0354 0.0305 0.0330
17:01-18:00, Thu., 27 Mar. 0.0352 0.0304 0.0333
16:01-17:00, Thu., 27 Mar. 0.0357 0.0315 0.0335
15:01-16:00, Thu., 27 Mar. 0.0367 0.0308 0.0337
14:01-15:00, Thu., 27 Mar. 0.0364 0.0317 0.0338
13:01-14:00, Thu., 27 Mar. 0.0361 0.0312 0.0340
12:01-13:00, Thu., 27 Mar. 0.0359 0.0312 0.0339
11:01-12:00, Thu., 27 Mar. 0.0372 0.0312 0.0340
10:01-11:00, Thu., 27 Mar. 0.0374 0.0318 0.0340
09:01-10:00, Thu., 27 Mar. 0.0391 0.0315 0.0342
08:01-09:00, Thu., 27 Mar. 0.0365 0.0318 0.0342
07:01-08:00, Thu., 27 Mar. 0.0364 0.0322 0.0342
06:01-07:00, Thu., 27 Mar. 0.0364 0.0318 0.0340
05:01-06:00, Thu., 27 Mar. 0.0370 0.0316 0.0336
04:01-05:00, Thu., 27 Mar. 0.0357 0.0321 0.0336
03:01-04:00, Thu., 27 Mar. 0.0361 0.0307 0.0336
02:01-03:00, Thu., 27 Mar. 0.0364 0.0315 0.0336
01:01-02:00, Thu., 27 Mar. 0.0358 0.0310 0.0336
00:01-01:00, Thu., 27 Mar. 0.0368 0.0317 0.0338
23:01-24:00, Wed., 26 Mar. 0.0379 0.0311 0.0340
22:01-23:00, Wed., 26 Mar. 0.0368 0.0308 0.0339
21:01-22:00, Wed., 26 Mar. 0.0371 0.0311 0.0335
20:01-21:00, Wed., 26 Mar. 0.0356 0.0304 0.0337
19:01-20:00, Wed., 26 Mar. 0.0359 0.0309 0.0334
18:01-19:00, Wed., 26 Mar. 0.0357 0.0304 0.0332
17:01-18:00, Wed., 26 Mar. 0.0356 0.0308 0.0336
16:01-17:00, Wed., 26 Mar. 0.0362 0.0307 0.0336
15:01-16:00, Wed., 26 Mar. 0.0368 0.0319 0.0339
14:01-15:00, Wed., 26 Mar. 0.0366 0.0314 0.0341
13:01-14:00, Wed., 26 Mar. 0.0361 0.0322 0.0342
12:01-13:00, Wed., 26 Mar. 0.0374 0.0316 0.0342
11:01-12:00, Wed., 26 Mar. 0.0361 0.0321 0.0339
10:01-11:00, Wed., 26 Mar. 0.0365 0.0322 0.0342
09:01-10:00, Wed., 26 Mar. 0.0367 0.0317 0.0340
08:01-09:00, Wed., 26 Mar. 0.0361 0.0308 0.0340
07:01-08:00, Wed., 26 Mar. 0.0370 0.0313 0.0342
06:01-07:00, Wed., 26 Mar. 0.0363 0.0323 0.0339
05:01-06:00, Wed., 26 Mar. 0.0363 0.0309 0.0335
04:01-05:00, Wed., 26 Mar. 0.0356 0.0307 0.0336
03:01-04:00, Wed., 26 Mar. 0.0359 0.0307 0.0335
02:01-03:00, Wed., 26 Mar. 0.0360 0.0304 0.0336
01:01-02:00, Wed., 26 Mar. 0.0349 0.0307 0.0334
00:01-01:00, Wed., 26 Mar. 0.0358 0.0313 0.0335
23:01-24:00, Tue., 25 Mar. 0.0369 0.0318 0.0339
22:01-23:00, Tue., 25 Mar. 0.0362 0.0318 0.0340
21:01-22:00, Tue., 25 Mar. 0.0362 0.0312 0.0341
20:01-21:00, Tue., 25 Mar. 0.0363 0.0318 0.0336
19:01-20:00, Tue., 25 Mar. 0.0360 0.0306 0.0335
18:01-19:00, Tue., 25 Mar. 0.0359 0.0315 0.0333
17:01-18:00, Tue., 25 Mar. 0.0363 0.0316 0.0336
16:01-17:00, Tue., 25 Mar. 0.0363 0.0314 0.0339
15:01-16:00, Tue., 25 Mar. 0.0362 0.0317 0.0339
14:01-15:00, Tue., 25 Mar. 0.0371 0.0317 0.0338
13:01-14:00, Tue., 25 Mar. 0.0366 0.0304 0.0336
12:01-13:00, Tue., 25 Mar. 0.0360 0.0313 0.0336
11:01-12:00, Tue., 25 Mar. 0.0358 0.0310 0.0334
10:01-11:00, Tue., 25 Mar. 0.0353 0.0299 0.0333
09:01-10:00, Tue., 25 Mar. 0.0365 0.0315 0.0338
08:01-09:00, Tue., 25 Mar. 0.0366 0.0324 0.0339
07:01-08:00, Tue., 25 Mar. 0.0363 0.0322 0.0342
06:01-07:00, Tue., 25 Mar. 0.0367 0.0317 0.0340
05:01-06:00, Tue., 25 Mar. 0.0368 0.0313 0.0338
04:01-05:00, Tue., 25 Mar. 0.0361 0.0318 0.0340
03:01-04:00, Tue., 25 Mar. 0.0361 0.0318 0.0339
02:01-03:00, Tue., 25 Mar. 0.0363 0.0320 0.0339
01:01-02:00, Tue., 25 Mar. 0.0363 0.0315 0.0338
00:01-01:00, Tue., 25 Mar. 0.0356 0.0315 0.0335
23:01-24:00, Mon., 24 Mar. 0.0368 0.0308 0.0339
22:01-23:00, Mon., 24 Mar. 0.0364 0.0320 0.0336
21:01-22:00, Mon., 24 Mar. 0.0363 0.0316 0.0336
20:01-21:00, Mon., 24 Mar. 0.0350 0.0308 0.0330
19:01-20:00, Mon., 24 Mar. 0.0357 0.0299 0.0333
18:01-19:00, Mon., 24 Mar. 0.0354 0.0308 0.0333
17:01-18:00, Mon., 24 Mar. 0.0358 0.0308 0.0333
16:01-17:00, Mon., 24 Mar. 0.0355 0.0313 0.0333
15:01-16:00, Mon., 24 Mar. 0.0348 0.0308 0.0333
14:01-15:00, Mon., 24 Mar. 0.0357 0.0310 0.0332
13:01-14:00, Mon., 24 Mar. 0.0356 0.0305 0.0333
12:01-13:00, Mon., 24 Mar. 0.0360 0.0311 0.0331
11:01-12:00, Mon., 24 Mar. 0.0362 0.0317 0.0340
10:01-11:00, Mon., 24 Mar. 0.0358 0.0310 0.0338
09:01-10:00, Mon., 24 Mar. 0.0364 0.0315 0.0340
08:01-09:00, Mon., 24 Mar. 0.0365 0.0314 0.0338
07:01-08:00, Mon., 24 Mar. 0.0356 0.0314 0.0336
06:01-07:00, Mon., 24 Mar. 0.0369 0.0315 0.0336
05:01-06:00, Mon., 24 Mar. 0.0356 0.0320 0.0338
04:01-05:00, Mon., 24 Mar. 0.0356 0.0316 0.0336
03:01-04:00, Mon., 24 Mar. 0.0361 0.0308 0.0331
02:01-03:00, Mon., 24 Mar. 0.0360 0.0312 0.0331
01:01-02:00, Mon., 24 Mar. 0.0361 0.0305 0.0332
00:01-01:00, Mon., 24 Mar. 0.0354 0.0312 0.0331
23:01-24:00, Sun., 23 Mar. 0.0356 0.0313 0.0333
22:01-23:00, Sun., 23 Mar. 0.0357 0.0313 0.0332
21:01-22:00, Sun., 23 Mar. 0.0359 0.0306 0.0330
20:01-21:00, Sun., 23 Mar. 0.0352 0.0309 0.0329
19:01-20:00, Sun., 23 Mar. 0.0356 0.0311 0.0335
18:01-19:00, Sun., 23 Mar. 0.0360 0.0308 0.0333
17:01-18:00, Sun., 23 Mar. 0.0360 0.0311 0.0332
16:01-17:00, Sun., 23 Mar. 0.0361 0.0315 0.0334