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
21:01-22:00, Fri., 06 Mar. 0.0357 0.0304 0.0330
20:01-21:00, Fri., 06 Mar. 0.0358 0.0311 0.0331
19:01-20:00, Fri., 06 Mar. 0.0353 0.0306 0.0326
18:01-19:00, Fri., 06 Mar. 0.0365 0.0307 0.0331
17:01-18:00, Fri., 06 Mar. 0.0363 0.0306 0.0333
16:01-17:00, Fri., 06 Mar. 0.0356 0.0308 0.0333
15:01-16:00, Fri., 06 Mar. 0.0354 0.0300 0.0328
14:01-15:00, Fri., 06 Mar. 0.0347 0.0307 0.0331
13:01-14:00, Fri., 06 Mar. 0.0360 0.0301 0.0331
12:01-13:00, Fri., 06 Mar. 0.0353 0.0301 0.0330
11:01-12:00, Fri., 06 Mar. 0.0361 0.0307 0.0329
10:01-11:00, Fri., 06 Mar. 0.0356 0.0310 0.0333
09:01-10:00, Fri., 06 Mar. 0.0358 0.0315 0.0335
08:01-09:00, Fri., 06 Mar. 0.0361 0.0314 0.0335
07:01-08:00, Fri., 06 Mar. 0.0361 0.0306 0.0336
06:01-07:00, Fri., 06 Mar. 0.0364 0.0315 0.0337
05:01-06:00, Fri., 06 Mar. 0.0353 0.0315 0.0335
04:01-05:00, Fri., 06 Mar. 0.0359 0.0315 0.0334
03:01-04:00, Fri., 06 Mar. 0.0356 0.0316 0.0335
02:01-03:00, Fri., 06 Mar. 0.0351 0.0303 0.0328
01:01-02:00, Fri., 06 Mar. 0.0354 0.0299 0.0329
00:01-01:00, Fri., 06 Mar. 0.0350 0.0308 0.0327
23:01-24:00, Thu., 05 Mar. 0.0348 0.0302 0.0328
22:01-23:00, Thu., 05 Mar. 0.0360 0.0306 0.0326
21:01-22:00, Thu., 05 Mar. 0.0350 0.0308 0.0328
20:01-21:00, Thu., 05 Mar. 0.0346 0.0305 0.0326
19:01-20:00, Thu., 05 Mar. 0.0349 0.0298 0.0325
18:01-19:00, Thu., 05 Mar. 0.0346 0.0297 0.0326
17:01-18:00, Thu., 05 Mar. 0.0356 0.0298 0.0324
16:01-17:00, Thu., 05 Mar. 0.0370 0.0305 0.0324
15:01-16:00, Thu., 05 Mar. 0.0351 0.0291 0.0323
14:01-15:00, Thu., 05 Mar. 0.0346 0.0309 0.0328
13:01-14:00, Thu., 05 Mar. 0.0350 0.0309 0.0326
12:01-13:00, Thu., 05 Mar. 0.0345 0.0306 0.0327
11:01-12:00, Thu., 05 Mar. 0.0360 0.0304 0.0328
10:01-11:00, Thu., 05 Mar. 0.0347 0.0310 0.0328
09:01-10:00, Thu., 05 Mar. 0.0358 0.0305 0.0326
08:01-09:00, Thu., 05 Mar. 0.0356 0.0311 0.0329
07:01-08:00, Thu., 05 Mar. 0.0349 0.0308 0.0327
06:01-07:00, Thu., 05 Mar. 0.0349 0.0303 0.0328
05:01-06:00, Thu., 05 Mar. 0.0357 0.0310 0.0329
04:01-05:00, Thu., 05 Mar. 0.0351 0.0301 0.0328
03:01-04:00, Thu., 05 Mar. 0.0353 0.0305 0.0328
02:01-03:00, Thu., 05 Mar. 0.0353 0.0306 0.0329
01:01-02:00, Thu., 05 Mar. 0.0349 0.0301 0.0327
00:01-01:00, Thu., 05 Mar. 0.0353 0.0308 0.0330
23:01-24:00, Wed., 04 Mar. 0.0351 0.0304 0.0328
22:01-23:00, Wed., 04 Mar. 0.0356 0.0304 0.0328
21:01-22:00, Wed., 04 Mar. 0.0346 0.0315 0.0328
20:01-21:00, Wed., 04 Mar. 0.0347 0.0298 0.0325
19:01-20:00, Wed., 04 Mar. 0.0350 0.0303 0.0327
18:01-19:00, Wed., 04 Mar. 0.0351 0.0304 0.0325
17:01-18:00, Wed., 04 Mar. 0.0347 0.0297 0.0326
16:01-17:00, Wed., 04 Mar. 0.0347 0.0303 0.0328
15:01-16:00, Wed., 04 Mar. 0.0344 0.0307 0.0327
14:01-15:00, Wed., 04 Mar. 0.0351 0.0302 0.0327
13:01-14:00, Wed., 04 Mar. 0.0356 0.0297 0.0329
12:01-13:00, Wed., 04 Mar. 0.0356 0.0308 0.0331
11:01-12:00, Wed., 04 Mar. 0.0357 0.0314 0.0336
10:01-11:00, Wed., 04 Mar. 0.0356 0.0311 0.0333
09:01-10:00, Wed., 04 Mar. 0.0376 0.0322 0.0345
08:01-09:00, Wed., 04 Mar. 0.0392 0.0332 0.0352
07:01-08:00, Wed., 04 Mar. 0.0374 0.0323 0.0353
06:01-07:00, Wed., 04 Mar. 0.0387 0.0332 0.0359
05:01-06:00, Wed., 04 Mar. 0.0429 0.0344 0.0384
04:01-05:00, Wed., 04 Mar. 0.0468 0.0398 0.0434
03:01-04:00, Wed., 04 Mar. 0.0498 0.0443 0.0466
02:01-03:00, Wed., 04 Mar. 0.0533 0.0439 0.0482
01:01-02:00, Wed., 04 Mar. 0.0586 0.0497 0.0547
00:01-01:00, Wed., 04 Mar. 0.0577 0.0508 0.0545
23:01-24:00, Tue., 03 Mar. 0.0565 0.0447 0.0507
22:01-23:00, Tue., 03 Mar. 0.0475 0.0404 0.0436
21:01-22:00, Tue., 03 Mar. 0.0525 0.0445 0.0490
20:01-21:00, Tue., 03 Mar. 0.0492 0.0419 0.0451
19:01-20:00, Tue., 03 Mar. 0.0509 0.0445 0.0476
18:01-19:00, Tue., 03 Mar. 0.0506 0.0447 0.0473
17:01-18:00, Tue., 03 Mar. 0.0501 0.0435 0.0468
16:01-17:00, Tue., 03 Mar. 0.0514 0.0433 0.0474
15:01-16:00, Tue., 03 Mar. 0.0490 0.0428 0.0455
14:01-15:00, Tue., 03 Mar. 0.0499 0.0432 0.0460
13:01-14:00, Tue., 03 Mar. 0.0498 0.0436 0.0467
12:01-13:00, Tue., 03 Mar. 0.0487 0.0425 0.0450
11:01-12:00, Tue., 03 Mar. 0.0488 0.0420 0.0447
10:01-11:00, Tue., 03 Mar. 0.0494 0.0425 0.0458
09:01-10:00, Tue., 03 Mar. 0.0497 0.0433 0.0467
08:01-09:00, Tue., 03 Mar. 0.0477 0.0408 0.0443
07:01-08:00, Tue., 03 Mar. 0.0462 0.0416 0.0441
06:01-07:00, Tue., 03 Mar. 0.0458 0.0378 0.0409
05:01-06:00, Tue., 03 Mar. 0.0405 0.0358 0.0381
04:01-05:00, Tue., 03 Mar. 0.0377 0.0306 0.0336
03:01-04:00, Tue., 03 Mar. 0.0361 0.0300 0.0330
02:01-03:00, Tue., 03 Mar. 0.0353 0.0298 0.0328
01:01-02:00, Tue., 03 Mar. 0.0346 0.0311 0.0330
00:01-01:00, Tue., 03 Mar. 0.0361 0.0306 0.0334
23:01-24:00, Mon., 02 Mar. 0.0357 0.0310 0.0330
22:01-23:00, Mon., 02 Mar. 0.0356 0.0309 0.0333
21:01-22:00, Mon., 02 Mar. 0.0355 0.0308 0.0330
20:01-21:00, Mon., 02 Mar. 0.0352 0.0304 0.0327
19:01-20:00, Mon., 02 Mar. 0.0361 0.0313 0.0332
18:01-19:00, Mon., 02 Mar. 0.0353 0.0301 0.0332
17:01-18:00, Mon., 02 Mar. 0.0364 0.0305 0.0331
16:01-17:00, Mon., 02 Mar. 0.0355 0.0303 0.0333
15:01-16:00, Mon., 02 Mar. 0.0359 0.0315 0.0333
14:01-15:00, Mon., 02 Mar. 0.0363 0.0315 0.0334
13:01-14:00, Mon., 02 Mar. 0.0360 0.0302 0.0335
12:01-13:00, Mon., 02 Mar. 0.0360 0.0311 0.0335
11:01-12:00, Mon., 02 Mar. 0.0363 0.0317 0.0338
10:01-11:00, Mon., 02 Mar. 0.0360 0.0311 0.0337
09:01-10:00, Mon., 02 Mar. 0.0367 0.0312 0.0337
08:01-09:00, Mon., 02 Mar. 0.0362 0.0320 0.0344
07:01-08:00, Mon., 02 Mar. 0.0366 0.0318 0.0341
06:01-07:00, Mon., 02 Mar. 0.0371 0.0323 0.0342
05:01-06:00, Mon., 02 Mar. 0.0372 0.0316 0.0339
04:01-05:00, Mon., 02 Mar. 0.0370 0.0306 0.0337
03:01-04:00, Mon., 02 Mar. 0.0352 0.0314 0.0336
02:01-03:00, Mon., 02 Mar. 0.0354 0.0310 0.0335
01:01-02:00, Mon., 02 Mar. 0.0355 0.0309 0.0335
00:01-01:00, Mon., 02 Mar. 0.0362 0.0302 0.0333
23:01-24:00, Sun., 01 Mar. 0.0365 0.0309 0.0332
22:01-23:00, Sun., 01 Mar. 0.0349 0.0300 0.0330
21:01-22:00, Sun., 01 Mar. 0.0353 0.0308 0.0328
20:01-21:00, Sun., 01 Mar. 0.0343 0.0303 0.0326
19:01-20:00, Sun., 01 Mar. 0.0360 0.0309 0.0327
18:01-19:00, Sun., 01 Mar. 0.0348 0.0297 0.0327
17:01-18:00, Sun., 01 Mar. 0.0347 0.0305 0.0326
16:01-17:00, Sun., 01 Mar. 0.0356 0.0308 0.0329
15:01-16:00, Sun., 01 Mar. 0.0354 0.0306 0.0332
14:01-15:00, Sun., 01 Mar. 0.0349 0.0301 0.0330
13:01-14:00, Sun., 01 Mar. 0.0356 0.0312 0.0332
12:01-13:00, Sun., 01 Mar. 0.0353 0.0308 0.0328
11:01-12:00, Sun., 01 Mar. 0.0356 0.0304 0.0329
10:01-11:00, Sun., 01 Mar. 0.0368 0.0309 0.0331
09:01-10:00, Sun., 01 Mar. 0.0356 0.0310 0.0332
08:01-09:00, Sun., 01 Mar. 0.0360 0.0309 0.0340
07:01-08:00, Sun., 01 Mar. 0.0371 0.0319 0.0344
06:01-07:00, Sun., 01 Mar. 0.0359 0.0314 0.0337
05:01-06:00, Sun., 01 Mar. 0.0362 0.0308 0.0335
04:01-05:00, Sun., 01 Mar. 0.0364 0.0315 0.0338
03:01-04:00, Sun., 01 Mar. 0.0366 0.0306 0.0336
02:01-03:00, Sun., 01 Mar. 0.0353 0.0300 0.0331
01:01-02:00, Sun., 01 Mar. 0.0349 0.0308 0.0332
00:01-01:00, Sun., 01 Mar. 0.0356 0.0308 0.0329
23:01-24:00, Sat., 28 Feb. 0.0351 0.0311 0.0330
22:01-23:00, Sat., 28 Feb. 0.0347 0.0303 0.0327
21:01-22:00, Sat., 28 Feb. 0.0351 0.0307 0.0329
20:01-21:00, Sat., 28 Feb. 0.0349 0.0295 0.0325
19:01-20:00, Sat., 28 Feb. 0.0356 0.0309 0.0330
18:01-19:00, Sat., 28 Feb. 0.0353 0.0305 0.0326
17:01-18:00, Sat., 28 Feb. 0.0351 0.0304 0.0328
16:01-17:00, Sat., 28 Feb. 0.0349 0.0307 0.0326
15:01-16:00, Sat., 28 Feb. 0.0356 0.0304 0.0329
14:01-15:00, Sat., 28 Feb. 0.0355 0.0314 0.0334
13:01-14:00, Sat., 28 Feb. 0.0371 0.0303 0.0334
12:01-13:00, Sat., 28 Feb. 0.0353 0.0316 0.0334
11:01-12:00, Sat., 28 Feb. 0.0362 0.0314 0.0334
10:01-11:00, Sat., 28 Feb. 0.0356 0.0320 0.0336
09:01-10:00, Sat., 28 Feb. 0.0365 0.0316 0.0336
08:01-09:00, Sat., 28 Feb. 0.0363 0.0310 0.0335
07:01-08:00, Sat., 28 Feb. 0.0358 0.0314 0.0334
06:01-07:00, Sat., 28 Feb. 0.0358 0.0313 0.0334
05:01-06:00, Sat., 28 Feb. 0.0362 0.0306 0.0338
04:01-05:00, Sat., 28 Feb. 0.0359 0.0315 0.0334
03:01-04:00, Sat., 28 Feb. 0.0360 0.0311 0.0332
02:01-03:00, Sat., 28 Feb. 0.0354 0.0310 0.0331
01:01-02:00, Sat., 28 Feb. 0.0360 0.0302 0.0330
00:01-01:00, Sat., 28 Feb. 0.0354 0.0308 0.0333
23:01-24:00, Fri., 27 Feb. 0.0350 0.0303 0.0330
22:01-23:00, Fri., 27 Feb. 0.0356 0.0307 0.0330
21:01-22:00, Fri., 27 Feb. 0.0355 0.0309 0.0329
20:01-21:00, Fri., 27 Feb. 0.0351 0.0304 0.0329
19:01-20:00, Fri., 27 Feb. 0.0352 0.0307 0.0328
18:01-19:00, Fri., 27 Feb. 0.0356 0.0304 0.0328
17:01-18:00, Fri., 27 Feb. 0.0354 0.0297 0.0326
16:01-17:00, Fri., 27 Feb. 0.0352 0.0301 0.0328
15:01-16:00, Fri., 27 Feb. 0.0350 0.0306 0.0330
14:01-15:00, Fri., 27 Feb. 0.0350 0.0306 0.0325
13:01-14:00, Fri., 27 Feb. 0.0354 0.0310 0.0329
12:01-13:00, Fri., 27 Feb. 0.0359 0.0304 0.0328
11:01-12:00, Fri., 27 Feb. 0.0354 0.0307 0.0331
10:01-11:00, Fri., 27 Feb. 0.0349 0.0310 0.0331
09:01-10:00, Fri., 27 Feb. 0.0359 0.0308 0.0332
08:01-09:00, Fri., 27 Feb. 0.0350 0.0304 0.0330
07:01-08:00, Fri., 27 Feb. 0.0348 0.0301 0.0329
06:01-07:00, Fri., 27 Feb. 0.0349 0.0302 0.0328
05:01-06:00, Fri., 27 Feb. 0.0354 0.0311 0.0327
04:01-05:00, Fri., 27 Feb. 0.0346 0.0306 0.0330
03:01-04:00, Fri., 27 Feb. 0.0354 0.0305 0.0328
02:01-03:00, Fri., 27 Feb. 0.0345 0.0311 0.0328
01:01-02:00, Fri., 27 Feb. 0.0354 0.0310 0.0326
00:01-01:00, Fri., 27 Feb. 0.0350 0.0305 0.0325
23:01-24:00, Thu., 26 Feb. 0.0353 0.0313 0.0328
22:01-23:00, Thu., 26 Feb. 0.0346 0.0302 0.0326
21:01-22:00, Thu., 26 Feb. 0.0350 0.0304 0.0325
20:01-21:00, Thu., 26 Feb. 0.0349 0.0302 0.0328
19:01-20:00, Thu., 26 Feb. 0.0353 0.0296 0.0325
18:01-19:00, Thu., 26 Feb. 0.0350 0.0301 0.0328
17:01-18:00, Thu., 26 Feb. 0.0344 0.0304 0.0324
16:01-17:00, Thu., 26 Feb. 0.0348 0.0300 0.0326
15:01-16:00, Thu., 26 Feb. 0.0346 0.0311 0.0328
14:01-15:00, Thu., 26 Feb. 0.0350 0.0308 0.0330
13:01-14:00, Thu., 26 Feb. 0.0363 0.0301 0.0330
12:01-13:00, Thu., 26 Feb. 0.0360 0.0306 0.0329
11:01-12:00, Thu., 26 Feb. 0.0347 0.0299 0.0328
10:01-11:00, Thu., 26 Feb. 0.0369 0.0318 0.0337
09:01-10:00, Thu., 26 Feb. 0.0356 0.0301 0.0333
08:01-09:00, Thu., 26 Feb. 0.0351 0.0316 0.0331
07:01-08:00, Thu., 26 Feb. 0.0374 0.0316 0.0346
06:01-07:00, Thu., 26 Feb. 0.0385 0.0336 0.0363
05:01-06:00, Thu., 26 Feb. 0.0395 0.0345 0.0371
04:01-05:00, Thu., 26 Feb. 0.0408 0.0348 0.0375
03:01-04:00, Thu., 26 Feb. 0.0401 0.0354 0.0374
02:01-03:00, Thu., 26 Feb. 0.0407 0.0357 0.0378
01:01-02:00, Thu., 26 Feb. 0.0400 0.0347 0.0379
00:01-01:00, Thu., 26 Feb. 0.0423 0.0348 0.0374
23:01-24:00, Wed., 25 Feb. 0.0435 0.0356 0.0401
22:01-23:00, Wed., 25 Feb. 0.0450 0.0385 0.0425
21:01-22:00, Wed., 25 Feb. 0.0459 0.0404 0.0434
20:01-21:00, Wed., 25 Feb. 0.0449 0.0401 0.0423
19:01-20:00, Wed., 25 Feb. 0.0455 0.0407 0.0428
18:01-19:00, Wed., 25 Feb. 0.0464 0.0411 0.0432
17:01-18:00, Wed., 25 Feb. 0.0449 0.0394 0.0424
16:01-17:00, Wed., 25 Feb. 0.0477 0.0398 0.0444
15:01-16:00, Wed., 25 Feb. 0.0470 0.0395 0.0432
14:01-15:00, Wed., 25 Feb. 0.0433 0.0378 0.0401
13:01-14:00, Wed., 25 Feb. 0.0483 0.0404 0.0445
12:01-13:00, Wed., 25 Feb. 0.0478 0.0410 0.0442
11:01-12:00, Wed., 25 Feb. 0.0444 0.0384 0.0414
10:01-11:00, Wed., 25 Feb. 0.0407 0.0348 0.0378
09:01-10:00, Wed., 25 Feb. 0.0402 0.0352 0.0378
08:01-09:00, Wed., 25 Feb. 0.0388 0.0341 0.0364
07:01-08:00, Wed., 25 Feb. 0.0397 0.0327 0.0360
06:01-07:00, Wed., 25 Feb. 0.0370 0.0329 0.0348
05:01-06:00, Wed., 25 Feb. 0.0362 0.0312 0.0337
04:01-05:00, Wed., 25 Feb. 0.0367 0.0315 0.0336
03:01-04:00, Wed., 25 Feb. 0.0359 0.0294 0.0333
02:01-03:00, Wed., 25 Feb. 0.0371 0.0314 0.0336
01:01-02:00, Wed., 25 Feb. 0.0356 0.0302 0.0333
00:01-01:00, Wed., 25 Feb. 0.0362 0.0312 0.0336
23:01-24:00, Tue., 24 Feb. 0.0350 0.0311 0.0331
22:01-23:00, Tue., 24 Feb. 0.0353 0.0308 0.0330