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
10:01-11:00, Fri., 27 Mar. 0.0348 0.0305 0.0327
09:01-10:00, Fri., 27 Mar. 0.0352 0.0305 0.0330
08:01-09:00, Fri., 27 Mar. 0.0353 0.0315 0.0331
07:01-08:00, Fri., 27 Mar. 0.0360 0.0311 0.0334
06:01-07:00, Fri., 27 Mar. 0.0356 0.0304 0.0332
05:01-06:00, Fri., 27 Mar. 0.0353 0.0294 0.0329
04:01-05:00, Fri., 27 Mar. 0.0353 0.0297 0.0327
03:01-04:00, Fri., 27 Mar. 0.0363 0.0304 0.0326
02:01-03:00, Fri., 27 Mar. 0.0360 0.0301 0.0324
01:01-02:00, Fri., 27 Mar. 0.0353 0.0290 0.0326
00:01-01:00, Fri., 27 Mar. 0.0349 0.0298 0.0324
23:01-24:00, Thu., 26 Mar. 0.0360 0.0304 0.0327
22:01-23:00, Thu., 26 Mar. 0.0346 0.0301 0.0326
21:01-22:00, Thu., 26 Mar. 0.0367 0.0297 0.0331
20:01-21:00, Thu., 26 Mar. 0.0353 0.0307 0.0326
19:01-20:00, Thu., 26 Mar. 0.0346 0.0299 0.0327
18:01-19:00, Thu., 26 Mar. 0.0361 0.0304 0.0328
17:01-18:00, Thu., 26 Mar. 0.0349 0.0306 0.0327
16:01-17:00, Thu., 26 Mar. 0.0357 0.0306 0.0333
15:01-16:00, Thu., 26 Mar. 0.0384 0.0322 0.0353
14:01-15:00, Thu., 26 Mar. 0.0395 0.0339 0.0371
13:01-14:00, Thu., 26 Mar. 0.0412 0.0329 0.0363
12:01-13:00, Thu., 26 Mar. 0.0395 0.0350 0.0374
11:01-12:00, Thu., 26 Mar. 0.0420 0.0370 0.0394
10:01-11:00, Thu., 26 Mar. 0.0436 0.0376 0.0407
09:01-10:00, Thu., 26 Mar. 0.0406 0.0358 0.0388
08:01-09:00, Thu., 26 Mar. 0.0419 0.0367 0.0388
07:01-08:00, Thu., 26 Mar. 0.0419 0.0364 0.0396
06:01-07:00, Thu., 26 Mar. 0.0426 0.0377 0.0404
05:01-06:00, Thu., 26 Mar. 0.0432 0.0371 0.0397
04:01-05:00, Thu., 26 Mar. 0.0440 0.0368 0.0414
03:01-04:00, Thu., 26 Mar. 0.0453 0.0383 0.0415
02:01-03:00, Thu., 26 Mar. 0.0436 0.0389 0.0410
01:01-02:00, Thu., 26 Mar. 0.0437 0.0379 0.0405
00:01-01:00, Thu., 26 Mar. 0.0433 0.0385 0.0405
23:01-24:00, Wed., 25 Mar. 0.0446 0.0386 0.0419
22:01-23:00, Wed., 25 Mar. 0.0451 0.0394 0.0425
21:01-22:00, Wed., 25 Mar. 0.0466 0.0406 0.0435
20:01-21:00, Wed., 25 Mar. 0.0461 0.0391 0.0427
19:01-20:00, Wed., 25 Mar. 0.0433 0.0377 0.0403
18:01-19:00, Wed., 25 Mar. 0.0432 0.0383 0.0402
17:01-18:00, Wed., 25 Mar. 0.0427 0.0380 0.0405
16:01-17:00, Wed., 25 Mar. 0.0433 0.0384 0.0406
15:01-16:00, Wed., 25 Mar. 0.0440 0.0390 0.0415
14:01-15:00, Wed., 25 Mar. 0.0458 0.0400 0.0426
13:01-14:00, Wed., 25 Mar. 0.0438 0.0344 0.0396
12:01-13:00, Wed., 25 Mar. 0.0381 0.0331 0.0354
11:01-12:00, Wed., 25 Mar. 0.0364 0.0320 0.0340
10:01-11:00, Wed., 25 Mar. 0.0361 0.0311 0.0332
09:01-10:00, Wed., 25 Mar. 0.0361 0.0311 0.0332
08:01-09:00, Wed., 25 Mar. 0.0362 0.0317 0.0334
07:01-08:00, Wed., 25 Mar. 0.0362 0.0313 0.0335
06:01-07:00, Wed., 25 Mar. 0.0357 0.0315 0.0336
05:01-06:00, Wed., 25 Mar. 0.0352 0.0320 0.0336
04:01-05:00, Wed., 25 Mar. 0.0367 0.0309 0.0335
03:01-04:00, Wed., 25 Mar. 0.0370 0.0311 0.0334
02:01-03:00, Wed., 25 Mar. 0.0354 0.0303 0.0331
01:01-02:00, Wed., 25 Mar. 0.0350 0.0312 0.0332
00:01-01:00, Wed., 25 Mar. 0.0349 0.0308 0.0330
23:01-24:00, Tue., 24 Mar. 0.0353 0.0311 0.0332
22:01-23:00, Tue., 24 Mar. 0.0354 0.0309 0.0332
21:01-22:00, Tue., 24 Mar. 0.0353 0.0304 0.0329
20:01-21:00, Tue., 24 Mar. 0.0362 0.0310 0.0332
19:01-20:00, Tue., 24 Mar. 0.0349 0.0304 0.0328
18:01-19:00, Tue., 24 Mar. 0.0366 0.0303 0.0329
17:01-18:00, Tue., 24 Mar. 0.0349 0.0308 0.0330
16:01-17:00, Tue., 24 Mar. 0.0356 0.0306 0.0330
15:01-16:00, Tue., 24 Mar. 0.0362 0.0319 0.0334
14:01-15:00, Tue., 24 Mar. 0.0368 0.0313 0.0336
13:01-14:00, Tue., 24 Mar. 0.0356 0.0304 0.0332
12:01-13:00, Tue., 24 Mar. 0.0354 0.0309 0.0333
11:01-12:00, Tue., 24 Mar. 0.0355 0.0301 0.0332
10:01-11:00, Tue., 24 Mar. 0.0354 0.0311 0.0334
09:01-10:00, Tue., 24 Mar. 0.0361 0.0307 0.0336
08:01-09:00, Tue., 24 Mar. 0.0363 0.0307 0.0335
07:01-08:00, Tue., 24 Mar. 0.0365 0.0313 0.0335
06:01-07:00, Tue., 24 Mar. 0.0349 0.0315 0.0333
05:01-06:00, Tue., 24 Mar. 0.0356 0.0298 0.0332
04:01-05:00, Tue., 24 Mar. 0.0363 0.0311 0.0333
03:01-04:00, Tue., 24 Mar. 0.0349 0.0311 0.0330
02:01-03:00, Tue., 24 Mar. 0.0362 0.0303 0.0330
01:01-02:00, Tue., 24 Mar. 0.0354 0.0306 0.0332
00:01-01:00, Tue., 24 Mar. 0.0360 0.0301 0.0328
23:01-24:00, Mon., 23 Mar. 0.0354 0.0292 0.0329
22:01-23:00, Mon., 23 Mar. 0.0356 0.0308 0.0331
21:01-22:00, Mon., 23 Mar. 0.0354 0.0311 0.0332
20:01-21:00, Mon., 23 Mar. 0.0362 0.0316 0.0334
19:01-20:00, Mon., 23 Mar. 0.0354 0.0297 0.0329
18:01-19:00, Mon., 23 Mar. 0.0363 0.0304 0.0331
17:01-18:00, Mon., 23 Mar. 0.0355 0.0299 0.0329
16:01-17:00, Mon., 23 Mar. 0.0362 0.0308 0.0329
15:01-16:00, Mon., 23 Mar. 0.0353 0.0308 0.0332
14:01-15:00, Mon., 23 Mar. 0.0353 0.0304 0.0332
13:01-14:00, Mon., 23 Mar. 0.0350 0.0304 0.0331
12:01-13:00, Mon., 23 Mar. 0.0356 0.0314 0.0332
11:01-12:00, Mon., 23 Mar. 0.0359 0.0316 0.0335
10:01-11:00, Mon., 23 Mar. 0.0367 0.0323 0.0346
09:01-10:00, Mon., 23 Mar. 0.0375 0.0326 0.0352
08:01-09:00, Mon., 23 Mar. 0.0401 0.0346 0.0367
07:01-08:00, Mon., 23 Mar. 0.0380 0.0332 0.0357
06:01-07:00, Mon., 23 Mar. 0.0374 0.0324 0.0348
05:01-06:00, Mon., 23 Mar. 0.0369 0.0325 0.0341
04:01-05:00, Mon., 23 Mar. 0.0359 0.0303 0.0338
03:01-04:00, Mon., 23 Mar. 0.0359 0.0315 0.0335
02:01-03:00, Mon., 23 Mar. 0.0361 0.0315 0.0337
01:01-02:00, Mon., 23 Mar. 0.0360 0.0294 0.0332
00:01-01:00, Mon., 23 Mar. 0.0353 0.0315 0.0334
23:01-24:00, Sun., 22 Mar. 0.0354 0.0315 0.0337
22:01-23:00, Sun., 22 Mar. 0.0359 0.0311 0.0338
21:01-22:00, Sun., 22 Mar. 0.0357 0.0311 0.0335
20:01-21:00, Sun., 22 Mar. 0.0367 0.0312 0.0334
19:01-20:00, Sun., 22 Mar. 0.0356 0.0306 0.0330
18:01-19:00, Sun., 22 Mar. 0.0351 0.0309 0.0331
17:01-18:00, Sun., 22 Mar. 0.0355 0.0311 0.0334
16:01-17:00, Sun., 22 Mar. 0.0352 0.0305 0.0332
15:01-16:00, Sun., 22 Mar. 0.0357 0.0306 0.0334
14:01-15:00, Sun., 22 Mar. 0.0363 0.0314 0.0333
13:01-14:00, Sun., 22 Mar. 0.0358 0.0307 0.0330
12:01-13:00, Sun., 22 Mar. 0.0361 0.0314 0.0334
11:01-12:00, Sun., 22 Mar. 0.0364 0.0310 0.0336
10:01-11:00, Sun., 22 Mar. 0.0371 0.0315 0.0340
09:01-10:00, Sun., 22 Mar. 0.0366 0.0312 0.0337
08:01-09:00, Sun., 22 Mar. 0.0363 0.0322 0.0340
07:01-08:00, Sun., 22 Mar. 0.0377 0.0318 0.0343
06:01-07:00, Sun., 22 Mar. 0.0374 0.0325 0.0346
05:01-06:00, Sun., 22 Mar. 0.0359 0.0317 0.0340
04:01-05:00, Sun., 22 Mar. 0.0355 0.0314 0.0338
03:01-04:00, Sun., 22 Mar. 0.0363 0.0312 0.0336
02:01-03:00, Sun., 22 Mar. 0.0352 0.0308 0.0335
01:01-02:00, Sun., 22 Mar. 0.0362 0.0313 0.0337
00:01-01:00, Sun., 22 Mar. 0.0368 0.0302 0.0333
23:01-24:00, Sat., 21 Mar. 0.0363 0.0309 0.0336
22:01-23:00, Sat., 21 Mar. 0.0351 0.0308 0.0333
21:01-22:00, Sat., 21 Mar. 0.0350 0.0303 0.0331
20:01-21:00, Sat., 21 Mar. 0.0351 0.0311 0.0331
19:01-20:00, Sat., 21 Mar. 0.0364 0.0310 0.0331
18:01-19:00, Sat., 21 Mar. 0.0350 0.0306 0.0331
17:01-18:00, Sat., 21 Mar. 0.0358 0.0308 0.0332
16:01-17:00, Sat., 21 Mar. 0.0345 0.0306 0.0327
15:01-16:00, Sat., 21 Mar. 0.0355 0.0302 0.0329
14:01-15:00, Sat., 21 Mar. 0.0356 0.0314 0.0332
13:01-14:00, Sat., 21 Mar. 0.0363 0.0313 0.0335
12:01-13:00, Sat., 21 Mar. 0.0356 0.0307 0.0334
11:01-12:00, Sat., 21 Mar. 0.0360 0.0309 0.0334
10:01-11:00, Sat., 21 Mar. 0.0356 0.0309 0.0334
09:01-10:00, Sat., 21 Mar. 0.0360 0.0306 0.0335
08:01-09:00, Sat., 21 Mar. 0.0360 0.0305 0.0333
07:01-08:00, Sat., 21 Mar. 0.0362 0.0313 0.0332
06:01-07:00, Sat., 21 Mar. 0.0349 0.0315 0.0332
05:01-06:00, Sat., 21 Mar. 0.0351 0.0311 0.0332
04:01-05:00, Sat., 21 Mar. 0.0355 0.0309 0.0329
03:01-04:00, Sat., 21 Mar. 0.0359 0.0308 0.0332
02:01-03:00, Sat., 21 Mar. 0.0356 0.0308 0.0334
01:01-02:00, Sat., 21 Mar. 0.0361 0.0304 0.0338
00:01-01:00, Sat., 21 Mar. 0.0358 0.0308 0.0334
23:01-24:00, Fri., 20 Mar. 0.0353 0.0307 0.0332
22:01-23:00, Fri., 20 Mar. 0.0360 0.0308 0.0332
21:01-22:00, Fri., 20 Mar. 0.0351 0.0307 0.0334
20:01-21:00, Fri., 20 Mar. 0.0363 0.0317 0.0338
19:01-20:00, Fri., 20 Mar. 0.0376 0.0321 0.0351
18:01-19:00, Fri., 20 Mar. 0.0393 0.0331 0.0362
17:01-18:00, Fri., 20 Mar. 0.0409 0.0359 0.0384
16:01-17:00, Fri., 20 Mar. 0.0394 0.0332 0.0365
15:01-16:00, Fri., 20 Mar. 0.0374 0.0325 0.0348
14:01-15:00, Fri., 20 Mar. 0.0374 0.0329 0.0347
13:01-14:00, Fri., 20 Mar. 0.0405 0.0331 0.0370
12:01-13:00, Fri., 20 Mar. 0.0437 0.0372 0.0404
11:01-12:00, Fri., 20 Mar. 0.0426 0.0358 0.0391
10:01-11:00, Fri., 20 Mar. 0.0419 0.0325 0.0375
09:01-10:00, Fri., 20 Mar. 0.0381 0.0329 0.0349
08:01-09:00, Fri., 20 Mar. 0.0396 0.0332 0.0364
07:01-08:00, Fri., 20 Mar. 0.0368 0.0313 0.0338
06:01-07:00, Fri., 20 Mar. 0.0357 0.0315 0.0336
05:01-06:00, Fri., 20 Mar. 0.0361 0.0315 0.0339
04:01-05:00, Fri., 20 Mar. 0.0360 0.0311 0.0338
03:01-04:00, Fri., 20 Mar. 0.0363 0.0311 0.0336
02:01-03:00, Fri., 20 Mar. 0.0356 0.0316 0.0339
01:01-02:00, Fri., 20 Mar. 0.0371 0.0319 0.0348
00:01-01:00, Fri., 20 Mar. 0.0397 0.0344 0.0368
23:01-24:00, Thu., 19 Mar. 0.0392 0.0319 0.0358
22:01-23:00, Thu., 19 Mar. 0.0362 0.0313 0.0336
21:01-22:00, Thu., 19 Mar. 0.0355 0.0306 0.0334
20:01-21:00, Thu., 19 Mar. 0.0353 0.0312 0.0331
19:01-20:00, Thu., 19 Mar. 0.0354 0.0312 0.0333
18:01-19:00, Thu., 19 Mar. 0.0356 0.0303 0.0331
17:01-18:00, Thu., 19 Mar. 0.0352 0.0313 0.0332
16:01-17:00, Thu., 19 Mar. 0.0349 0.0316 0.0332
15:01-16:00, Thu., 19 Mar. 0.0359 0.0303 0.0332
14:01-15:00, Thu., 19 Mar. 0.0356 0.0311 0.0336
13:01-14:00, Thu., 19 Mar. 0.0362 0.0317 0.0339
12:01-13:00, Thu., 19 Mar. 0.0371 0.0315 0.0340
11:01-12:00, Thu., 19 Mar. 0.0369 0.0318 0.0341
10:01-11:00, Thu., 19 Mar. 0.0362 0.0314 0.0340
09:01-10:00, Thu., 19 Mar. 0.0374 0.0318 0.0342
08:01-09:00, Thu., 19 Mar. 0.0368 0.0322 0.0347
07:01-08:00, Thu., 19 Mar. 0.0366 0.0319 0.0347
06:01-07:00, Thu., 19 Mar. 0.0385 0.0326 0.0350
05:01-06:00, Thu., 19 Mar. 0.0389 0.0345 0.0364
04:01-05:00, Thu., 19 Mar. 0.0376 0.0321 0.0346
03:01-04:00, Thu., 19 Mar. 0.0360 0.0308 0.0337
02:01-03:00, Thu., 19 Mar. 0.0356 0.0308 0.0333
01:01-02:00, Thu., 19 Mar. 0.0357 0.0306 0.0334
00:01-01:00, Thu., 19 Mar. 0.0362 0.0294 0.0335
23:01-24:00, Wed., 18 Mar. 0.0356 0.0314 0.0335
22:01-23:00, Wed., 18 Mar. 0.0362 0.0308 0.0334
21:01-22:00, Wed., 18 Mar. 0.0348 0.0293 0.0329
20:01-21:00, Wed., 18 Mar. 0.0349 0.0297 0.0328
19:01-20:00, Wed., 18 Mar. 0.0350 0.0304 0.0328
18:01-19:00, Wed., 18 Mar. 0.0350 0.0307 0.0329
17:01-18:00, Wed., 18 Mar. 0.0348 0.0315 0.0330
16:01-17:00, Wed., 18 Mar. 0.0356 0.0303 0.0330
15:01-16:00, Wed., 18 Mar. 0.0361 0.0308 0.0329
14:01-15:00, Wed., 18 Mar. 0.0349 0.0299 0.0328
13:01-14:00, Wed., 18 Mar. 0.0353 0.0302 0.0329
12:01-13:00, Wed., 18 Mar. 0.0349 0.0307 0.0331
11:01-12:00, Wed., 18 Mar. 0.0361 0.0312 0.0331
10:01-11:00, Wed., 18 Mar. 0.0348 0.0303 0.0335
09:01-10:00, Wed., 18 Mar. 0.0360 0.0313 0.0336
08:01-09:00, Wed., 18 Mar. 0.0366 0.0313 0.0336
07:01-08:00, Wed., 18 Mar. 0.0356 0.0311 0.0336
06:01-07:00, Wed., 18 Mar. 0.0362 0.0312 0.0335
05:01-06:00, Wed., 18 Mar. 0.0353 0.0311 0.0332
04:01-05:00, Wed., 18 Mar. 0.0356 0.0313 0.0334
03:01-04:00, Wed., 18 Mar. 0.0361 0.0315 0.0333
02:01-03:00, Wed., 18 Mar. 0.0358 0.0311 0.0336
01:01-02:00, Wed., 18 Mar. 0.0349 0.0317 0.0336
00:01-01:00, Wed., 18 Mar. 0.0368 0.0309 0.0334
23:01-24:00, Tue., 17 Mar. 0.0354 0.0297 0.0329
22:01-23:00, Tue., 17 Mar. 0.0349 0.0308 0.0329
21:01-22:00, Tue., 17 Mar. 0.0358 0.0313 0.0331
20:01-21:00, Tue., 17 Mar. 0.0360 0.0305 0.0329
19:01-20:00, Tue., 17 Mar. 0.0353 0.0304 0.0330
18:01-19:00, Tue., 17 Mar. 0.0347 0.0303 0.0329
17:01-18:00, Tue., 17 Mar. 0.0360 0.0306 0.0329
16:01-17:00, Tue., 17 Mar. 0.0350 0.0298 0.0328
15:01-16:00, Tue., 17 Mar. 0.0351 0.0306 0.0330
14:01-15:00, Tue., 17 Mar. 0.0356 0.0306 0.0330
13:01-14:00, Tue., 17 Mar. 0.0359 0.0306 0.0329
12:01-13:00, Tue., 17 Mar. 0.0356 0.0312 0.0333
11:01-12:00, Tue., 17 Mar. 0.0349 0.0311 0.0333