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.

News about this monitoring post

〇About the stop (October 28) of the monitoring post (the Kodaira station)
Due to statutory inspection of the electrical equipment at the Medicinal Plant Garden, spatial radiation measurements will be temporarily suspended from approximately 8:30 a.m. to approximately 11:00 p.m. on October 28, 2024.

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
12:01-13:00, Sun., 22 Dec. 0.0356 0.0301 0.0335
11:01-12:00, Sun., 22 Dec. 0.0361 0.0309 0.0335
10:01-11:00, Sun., 22 Dec. 0.0352 0.0316 0.0335
09:01-10:00, Sun., 22 Dec. 0.0359 0.0315 0.0335
08:01-09:00, Sun., 22 Dec. 0.0353 0.0315 0.0335
07:01-08:00, Sun., 22 Dec. 0.0365 0.0313 0.0336
06:01-07:00, Sun., 22 Dec. 0.0356 0.0313 0.0334
05:01-06:00, Sun., 22 Dec. 0.0377 0.0313 0.0340
04:01-05:00, Sun., 22 Dec. 0.0371 0.0306 0.0339
03:01-04:00, Sun., 22 Dec. 0.0361 0.0317 0.0340
02:01-03:00, Sun., 22 Dec. 0.0374 0.0323 0.0346
01:01-02:00, Sun., 22 Dec. 0.0374 0.0319 0.0345
00:01-01:00, Sun., 22 Dec. 0.0378 0.0315 0.0343
23:01-24:00, Sat., 21 Dec. 0.0368 0.0323 0.0342
22:01-23:00, Sat., 21 Dec. 0.0367 0.0313 0.0342
21:01-22:00, Sat., 21 Dec. 0.0360 0.0311 0.0335
20:01-21:00, Sat., 21 Dec. 0.0352 0.0309 0.0330
19:01-20:00, Sat., 21 Dec. 0.0354 0.0309 0.0329
18:01-19:00, Sat., 21 Dec. 0.0349 0.0304 0.0327
17:01-18:00, Sat., 21 Dec. 0.0353 0.0306 0.0325
16:01-17:00, Sat., 21 Dec. 0.0348 0.0301 0.0329
15:01-16:00, Sat., 21 Dec. 0.0353 0.0304 0.0329
14:01-15:00, Sat., 21 Dec. 0.0352 0.0311 0.0331
13:01-14:00, Sat., 21 Dec. 0.0360 0.0312 0.0334
12:01-13:00, Sat., 21 Dec. 0.0358 0.0308 0.0333
11:01-12:00, Sat., 21 Dec. 0.0362 0.0303 0.0330
10:01-11:00, Sat., 21 Dec. 0.0360 0.0313 0.0330
09:01-10:00, Sat., 21 Dec. 0.0366 0.0307 0.0344
08:01-09:00, Sat., 21 Dec. 0.0365 0.0325 0.0344
07:01-08:00, Sat., 21 Dec. 0.0368 0.0329 0.0350
06:01-07:00, Sat., 21 Dec. 0.0375 0.0329 0.0349
05:01-06:00, Sat., 21 Dec. 0.0370 0.0334 0.0350
04:01-05:00, Sat., 21 Dec. 0.0370 0.0323 0.0346
03:01-04:00, Sat., 21 Dec. 0.0375 0.0332 0.0349
02:01-03:00, Sat., 21 Dec. 0.0366 0.0318 0.0343
01:01-02:00, Sat., 21 Dec. 0.0360 0.0313 0.0336
00:01-01:00, Sat., 21 Dec. 0.0359 0.0308 0.0335
23:01-24:00, Fri., 20 Dec. 0.0363 0.0309 0.0337
22:01-23:00, Fri., 20 Dec. 0.0354 0.0298 0.0335
21:01-22:00, Fri., 20 Dec. 0.0353 0.0315 0.0335
20:01-21:00, Fri., 20 Dec. 0.0356 0.0310 0.0336
19:01-20:00, Fri., 20 Dec. 0.0363 0.0304 0.0331
18:01-19:00, Fri., 20 Dec. 0.0349 0.0304 0.0328
17:01-18:00, Fri., 20 Dec. 0.0343 0.0307 0.0327
16:01-17:00, Fri., 20 Dec. 0.0346 0.0305 0.0325
15:01-16:00, Fri., 20 Dec. 0.0347 0.0310 0.0328
14:01-15:00, Fri., 20 Dec. 0.0353 0.0301 0.0328
13:01-14:00, Fri., 20 Dec. 0.0360 0.0303 0.0329
12:01-13:00, Fri., 20 Dec. 0.0353 0.0308 0.0328
11:01-12:00, Fri., 20 Dec. 0.0346 0.0311 0.0330
10:01-11:00, Fri., 20 Dec. 0.0364 0.0312 0.0330
09:01-10:00, Fri., 20 Dec. 0.0374 0.0324 0.0342
08:01-09:00, Fri., 20 Dec. 0.0367 0.0317 0.0339
07:01-08:00, Fri., 20 Dec. 0.0357 0.0311 0.0341
06:01-07:00, Fri., 20 Dec. 0.0361 0.0310 0.0333
05:01-06:00, Fri., 20 Dec. 0.0356 0.0304 0.0331
04:01-05:00, Fri., 20 Dec. 0.0352 0.0302 0.0328
03:01-04:00, Fri., 20 Dec. 0.0353 0.0308 0.0333
02:01-03:00, Fri., 20 Dec. 0.0356 0.0322 0.0336
01:01-02:00, Fri., 20 Dec. 0.0364 0.0309 0.0339
00:01-01:00, Fri., 20 Dec. 0.0370 0.0308 0.0335
23:01-24:00, Thu., 19 Dec. 0.0343 0.0301 0.0326
22:01-23:00, Thu., 19 Dec. 0.0348 0.0303 0.0324
21:01-22:00, Thu., 19 Dec. 0.0349 0.0297 0.0327
20:01-21:00, Thu., 19 Dec. 0.0351 0.0299 0.0327
19:01-20:00, Thu., 19 Dec. 0.0346 0.0307 0.0326
18:01-19:00, Thu., 19 Dec. 0.0347 0.0303 0.0326
17:01-18:00, Thu., 19 Dec. 0.0361 0.0301 0.0326
16:01-17:00, Thu., 19 Dec. 0.0361 0.0306 0.0332
15:01-16:00, Thu., 19 Dec. 0.0351 0.0309 0.0328
14:01-15:00, Thu., 19 Dec. 0.0356 0.0310 0.0334
13:01-14:00, Thu., 19 Dec. 0.0360 0.0317 0.0335
12:01-13:00, Thu., 19 Dec. 0.0363 0.0311 0.0332
11:01-12:00, Thu., 19 Dec. 0.0352 0.0314 0.0333
10:01-11:00, Thu., 19 Dec. 0.0361 0.0313 0.0334
09:01-10:00, Thu., 19 Dec. 0.0351 0.0314 0.0334
08:01-09:00, Thu., 19 Dec. 0.0349 0.0312 0.0333
07:01-08:00, Thu., 19 Dec. 0.0358 0.0312 0.0332
06:01-07:00, Thu., 19 Dec. 0.0363 0.0309 0.0338
05:01-06:00, Thu., 19 Dec. 0.0363 0.0321 0.0343
04:01-05:00, Thu., 19 Dec. 0.0379 0.0325 0.0347
03:01-04:00, Thu., 19 Dec. 0.0374 0.0330 0.0353
02:01-03:00, Thu., 19 Dec. 0.0374 0.0309 0.0347
01:01-02:00, Thu., 19 Dec. 0.0360 0.0318 0.0335
00:01-01:00, Thu., 19 Dec. 0.0362 0.0304 0.0330
23:01-24:00, Wed., 18 Dec. 0.0350 0.0311 0.0332
22:01-23:00, Wed., 18 Dec. 0.0356 0.0305 0.0331
21:01-22:00, Wed., 18 Dec. 0.0358 0.0308 0.0335
20:01-21:00, Wed., 18 Dec. 0.0356 0.0310 0.0335
19:01-20:00, Wed., 18 Dec. 0.0356 0.0311 0.0334
18:01-19:00, Wed., 18 Dec. 0.0356 0.0307 0.0331
17:01-18:00, Wed., 18 Dec. 0.0353 0.0302 0.0330
16:01-17:00, Wed., 18 Dec. 0.0352 0.0312 0.0329
15:01-16:00, Wed., 18 Dec. 0.0356 0.0305 0.0333
14:01-15:00, Wed., 18 Dec. 0.0361 0.0307 0.0335
13:01-14:00, Wed., 18 Dec. 0.0353 0.0304 0.0336
12:01-13:00, Wed., 18 Dec. 0.0356 0.0312 0.0336
11:01-12:00, Wed., 18 Dec. 0.0367 0.0315 0.0339
10:01-11:00, Wed., 18 Dec. 0.0367 0.0322 0.0343
09:01-10:00, Wed., 18 Dec. 0.0369 0.0317 0.0347
08:01-09:00, Wed., 18 Dec. 0.0392 0.0319 0.0349
07:01-08:00, Wed., 18 Dec. 0.0393 0.0329 0.0352
06:01-07:00, Wed., 18 Dec. 0.0375 0.0330 0.0354
05:01-06:00, Wed., 18 Dec. 0.0368 0.0329 0.0352
04:01-05:00, Wed., 18 Dec. 0.0371 0.0325 0.0346
03:01-04:00, Wed., 18 Dec. 0.0373 0.0327 0.0350
02:01-03:00, Wed., 18 Dec. 0.0377 0.0323 0.0348
01:01-02:00, Wed., 18 Dec. 0.0368 0.0326 0.0349
00:01-01:00, Wed., 18 Dec. 0.0374 0.0312 0.0346
23:01-24:00, Tue., 17 Dec. 0.0377 0.0325 0.0346
22:01-23:00, Tue., 17 Dec. 0.0371 0.0323 0.0342
21:01-22:00, Tue., 17 Dec. 0.0367 0.0311 0.0340
20:01-21:00, Tue., 17 Dec. 0.0366 0.0317 0.0340
19:01-20:00, Tue., 17 Dec. 0.0360 0.0312 0.0338
18:01-19:00, Tue., 17 Dec. 0.0361 0.0314 0.0333
17:01-18:00, Tue., 17 Dec. 0.0349 0.0307 0.0329
16:01-17:00, Tue., 17 Dec. 0.0356 0.0297 0.0329
15:01-16:00, Tue., 17 Dec. 0.0374 0.0308 0.0334
14:01-15:00, Tue., 17 Dec. 0.0355 0.0318 0.0334
13:01-14:00, Tue., 17 Dec. 0.0357 0.0316 0.0338
12:01-13:00, Tue., 17 Dec. 0.0362 0.0318 0.0338
11:01-12:00, Tue., 17 Dec. 0.0360 0.0318 0.0338
10:01-11:00, Tue., 17 Dec. 0.0356 0.0318 0.0339
09:01-10:00, Tue., 17 Dec. 0.0370 0.0317 0.0343
08:01-09:00, Tue., 17 Dec. 0.0380 0.0325 0.0349
07:01-08:00, Tue., 17 Dec. 0.0366 0.0326 0.0351
06:01-07:00, Tue., 17 Dec. 0.0363 0.0321 0.0347
05:01-06:00, Tue., 17 Dec. 0.0376 0.0329 0.0350
04:01-05:00, Tue., 17 Dec. 0.0377 0.0322 0.0353
03:01-04:00, Tue., 17 Dec. 0.0374 0.0316 0.0350
02:01-03:00, Tue., 17 Dec. 0.0377 0.0328 0.0350
01:01-02:00, Tue., 17 Dec. 0.0370 0.0313 0.0339
00:01-01:00, Tue., 17 Dec. 0.0367 0.0319 0.0343
23:01-24:00, Mon., 16 Dec. 0.0361 0.0315 0.0340
22:01-23:00, Mon., 16 Dec. 0.0368 0.0311 0.0341
21:01-22:00, Mon., 16 Dec. 0.0373 0.0319 0.0342
20:01-21:00, Mon., 16 Dec. 0.0362 0.0316 0.0338
19:01-20:00, Mon., 16 Dec. 0.0356 0.0308 0.0336
18:01-19:00, Mon., 16 Dec. 0.0351 0.0309 0.0332
17:01-18:00, Mon., 16 Dec. 0.0349 0.0308 0.0329
16:01-17:00, Mon., 16 Dec. 0.0356 0.0310 0.0331
15:01-16:00, Mon., 16 Dec. 0.0360 0.0311 0.0333
14:01-15:00, Mon., 16 Dec. 0.0353 0.0313 0.0333
13:01-14:00, Mon., 16 Dec. 0.0370 0.0315 0.0338
12:01-13:00, Mon., 16 Dec. 0.0372 0.0311 0.0340
11:01-12:00, Mon., 16 Dec. 0.0372 0.0316 0.0340
10:01-11:00, Mon., 16 Dec. 0.0367 0.0317 0.0339
09:01-10:00, Mon., 16 Dec. 0.0373 0.0317 0.0344
08:01-09:00, Mon., 16 Dec. 0.0363 0.0325 0.0344
07:01-08:00, Mon., 16 Dec. 0.0373 0.0325 0.0347
06:01-07:00, Mon., 16 Dec. 0.0367 0.0308 0.0344
05:01-06:00, Mon., 16 Dec. 0.0369 0.0322 0.0348
04:01-05:00, Mon., 16 Dec. 0.0374 0.0324 0.0344
03:01-04:00, Mon., 16 Dec. 0.0363 0.0322 0.0343
02:01-03:00, Mon., 16 Dec. 0.0371 0.0317 0.0345
01:01-02:00, Mon., 16 Dec. 0.0373 0.0309 0.0341
00:01-01:00, Mon., 16 Dec. 0.0371 0.0320 0.0342
23:01-24:00, Sun., 15 Dec. 0.0369 0.0317 0.0343
22:01-23:00, Sun., 15 Dec. 0.0362 0.0313 0.0341
21:01-22:00, Sun., 15 Dec. 0.0359 0.0313 0.0331
20:01-21:00, Sun., 15 Dec. 0.0351 0.0309 0.0332
19:01-20:00, Sun., 15 Dec. 0.0362 0.0315 0.0335
18:01-19:00, Sun., 15 Dec. 0.0367 0.0310 0.0336
17:01-18:00, Sun., 15 Dec. 0.0357 0.0302 0.0334
16:01-17:00, Sun., 15 Dec. 0.0347 0.0299 0.0329
15:01-16:00, Sun., 15 Dec. 0.0356 0.0298 0.0330
14:01-15:00, Sun., 15 Dec. 0.0356 0.0311 0.0332
13:01-14:00, Sun., 15 Dec. 0.0355 0.0308 0.0334
12:01-13:00, Sun., 15 Dec. 0.0355 0.0315 0.0335
11:01-12:00, Sun., 15 Dec. 0.0355 0.0313 0.0334
10:01-11:00, Sun., 15 Dec. 0.0371 0.0310 0.0336
09:01-10:00, Sun., 15 Dec. 0.0369 0.0322 0.0341
08:01-09:00, Sun., 15 Dec. 0.0373 0.0322 0.0347
07:01-08:00, Sun., 15 Dec. 0.0375 0.0330 0.0350
06:01-07:00, Sun., 15 Dec. 0.0377 0.0318 0.0350
05:01-06:00, Sun., 15 Dec. 0.0376 0.0320 0.0350
04:01-05:00, Sun., 15 Dec. 0.0377 0.0321 0.0348
03:01-04:00, Sun., 15 Dec. 0.0375 0.0324 0.0349
02:01-03:00, Sun., 15 Dec. 0.0366 0.0318 0.0346
01:01-02:00, Sun., 15 Dec. 0.0363 0.0308 0.0338
00:01-01:00, Sun., 15 Dec. 0.0358 0.0318 0.0338
23:01-24:00, Sat., 14 Dec. 0.0358 0.0308 0.0335
22:01-23:00, Sat., 14 Dec. 0.0357 0.0307 0.0330
21:01-22:00, Sat., 14 Dec. 0.0343 0.0307 0.0328
20:01-21:00, Sat., 14 Dec. 0.0350 0.0304 0.0330
19:01-20:00, Sat., 14 Dec. 0.0347 0.0301 0.0329
18:01-19:00, Sat., 14 Dec. 0.0350 0.0303 0.0327
17:01-18:00, Sat., 14 Dec. 0.0349 0.0301 0.0327
16:01-17:00, Sat., 14 Dec. 0.0347 0.0306 0.0330
15:01-16:00, Sat., 14 Dec. 0.0354 0.0294 0.0329
14:01-15:00, Sat., 14 Dec. 0.0356 0.0308 0.0331
13:01-14:00, Sat., 14 Dec. 0.0350 0.0312 0.0330
12:01-13:00, Sat., 14 Dec. 0.0354 0.0305 0.0329
11:01-12:00, Sat., 14 Dec. 0.0352 0.0309 0.0330
10:01-11:00, Sat., 14 Dec. 0.0353 0.0302 0.0329
09:01-10:00, Sat., 14 Dec. 0.0366 0.0302 0.0330
08:01-09:00, Sat., 14 Dec. 0.0353 0.0310 0.0332
07:01-08:00, Sat., 14 Dec. 0.0361 0.0318 0.0338
06:01-07:00, Sat., 14 Dec. 0.0368 0.0315 0.0343
05:01-06:00, Sat., 14 Dec. 0.0369 0.0317 0.0346
04:01-05:00, Sat., 14 Dec. 0.0370 0.0328 0.0350
03:01-04:00, Sat., 14 Dec. 0.0381 0.0340 0.0359
02:01-03:00, Sat., 14 Dec. 0.0374 0.0325 0.0351
01:01-02:00, Sat., 14 Dec. 0.0388 0.0325 0.0348
00:01-01:00, Sat., 14 Dec. 0.0378 0.0322 0.0351
23:01-24:00, Fri., 13 Dec. 0.0373 0.0329 0.0349
22:01-23:00, Fri., 13 Dec. 0.0366 0.0322 0.0340
21:01-22:00, Fri., 13 Dec. 0.0364 0.0319 0.0338
20:01-21:00, Fri., 13 Dec. 0.0359 0.0315 0.0338
19:01-20:00, Fri., 13 Dec. 0.0368 0.0317 0.0338
18:01-19:00, Fri., 13 Dec. 0.0360 0.0314 0.0336
17:01-18:00, Fri., 13 Dec. 0.0360 0.0304 0.0336
16:01-17:00, Fri., 13 Dec. 0.0361 0.0315 0.0339
15:01-16:00, Fri., 13 Dec. 0.0362 0.0308 0.0338
14:01-15:00, Fri., 13 Dec. 0.0363 0.0316 0.0341
13:01-14:00, Fri., 13 Dec. 0.0368 0.0315 0.0343
12:01-13:00, Fri., 13 Dec. 0.0363 0.0307 0.0337
11:01-12:00, Fri., 13 Dec. 0.0363 0.0307 0.0339
10:01-11:00, Fri., 13 Dec. 0.0360 0.0306 0.0335
09:01-10:00, Fri., 13 Dec. 0.0374 0.0317 0.0341
08:01-09:00, Fri., 13 Dec. 0.0380 0.0332 0.0350
07:01-08:00, Fri., 13 Dec. 0.0374 0.0328 0.0348
06:01-07:00, Fri., 13 Dec. 0.0367 0.0322 0.0346
05:01-06:00, Fri., 13 Dec. 0.0379 0.0326 0.0354
04:01-05:00, Fri., 13 Dec. 0.0376 0.0318 0.0345
03:01-04:00, Fri., 13 Dec. 0.0363 0.0313 0.0339
02:01-03:00, Fri., 13 Dec. 0.0359 0.0308 0.0338
01:01-02:00, Fri., 13 Dec. 0.0362 0.0310 0.0334
00:01-01:00, Fri., 13 Dec. 0.0351 0.0304 0.0329
23:01-24:00, Thu., 12 Dec. 0.0349 0.0308 0.0328
22:01-23:00, Thu., 12 Dec. 0.0346 0.0308 0.0327
21:01-22:00, Thu., 12 Dec. 0.0346 0.0304 0.0327
20:01-21:00, Thu., 12 Dec. 0.0358 0.0292 0.0327
19:01-20:00, Thu., 12 Dec. 0.0347 0.0305 0.0327
18:01-19:00, Thu., 12 Dec. 0.0343 0.0302 0.0325
17:01-18:00, Thu., 12 Dec. 0.0353 0.0308 0.0326
16:01-17:00, Thu., 12 Dec. 0.0344 0.0306 0.0324
15:01-16:00, Thu., 12 Dec. 0.0358 0.0303 0.0327
14:01-15:00, Thu., 12 Dec. 0.0353 0.0303 0.0331
13:01-14:00, Thu., 12 Dec. 0.0356 0.0311 0.0330