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

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
14:01-15:00, Sun., 23 Feb. 0.0318 0.0276 0.0294
13:01-14:00, Sun., 23 Feb. 0.0320 0.0273 0.0294
12:01-13:00, Sun., 23 Feb. 0.0319 0.0274 0.0294
11:01-12:00, Sun., 23 Feb. 0.0318 0.0279 0.0299
10:01-11:00, Sun., 23 Feb. 0.0318 0.0280 0.0299
09:01-10:00, Sun., 23 Feb. 0.0311 0.0273 0.0295
08:01-09:00, Sun., 23 Feb. 0.0315 0.0276 0.0295
07:01-08:00, Sun., 23 Feb. 0.0315 0.0269 0.0294
06:01-07:00, Sun., 23 Feb. 0.0322 0.0270 0.0296
05:01-06:00, Sun., 23 Feb. 0.0318 0.0277 0.0297
04:01-05:00, Sun., 23 Feb. 0.0311 0.0280 0.0297
03:01-04:00, Sun., 23 Feb. 0.0317 0.0267 0.0291
02:01-03:00, Sun., 23 Feb. 0.0318 0.0280 0.0296
01:01-02:00, Sun., 23 Feb. 0.0312 0.0269 0.0292
00:01-01:00, Sun., 23 Feb. 0.0323 0.0274 0.0292
23:01-24:00, Sat., 22 Feb. 0.0306 0.0270 0.0291
22:01-23:00, Sat., 22 Feb. 0.0315 0.0265 0.0291
21:01-22:00, Sat., 22 Feb. 0.0322 0.0274 0.0292
20:01-21:00, Sat., 22 Feb. 0.0310 0.0267 0.0294
19:01-20:00, Sat., 22 Feb. 0.0315 0.0280 0.0297
18:01-19:00, Sat., 22 Feb. 0.0315 0.0273 0.0296
17:01-18:00, Sat., 22 Feb. 0.0315 0.0275 0.0299
16:01-17:00, Sat., 22 Feb. 0.0319 0.0282 0.0298
15:01-16:00, Sat., 22 Feb. 0.0327 0.0273 0.0297
14:01-15:00, Sat., 22 Feb. 0.0318 0.0271 0.0300
13:01-14:00, Sat., 22 Feb. 0.0318 0.0277 0.0297
12:01-13:00, Sat., 22 Feb. 0.0315 0.0273 0.0299
11:01-12:00, Sat., 22 Feb. 0.0315 0.0279 0.0296
10:01-11:00, Sat., 22 Feb. 0.0316 0.0283 0.0297
09:01-10:00, Sat., 22 Feb. 0.0321 0.0267 0.0297
08:01-09:00, Sat., 22 Feb. 0.0317 0.0276 0.0296
07:01-08:00, Sat., 22 Feb. 0.0321 0.0276 0.0296
06:01-07:00, Sat., 22 Feb. 0.0318 0.0270 0.0295
05:01-06:00, Sat., 22 Feb. 0.0315 0.0268 0.0294
04:01-05:00, Sat., 22 Feb. 0.0315 0.0269 0.0290
03:01-04:00, Sat., 22 Feb. 0.0315 0.0273 0.0290
02:01-03:00, Sat., 22 Feb. 0.0311 0.0276 0.0294
01:01-02:00, Sat., 22 Feb. 0.0325 0.0274 0.0293
00:01-01:00, Sat., 22 Feb. 0.0308 0.0273 0.0292
23:01-24:00, Fri., 21 Feb. 0.0308 0.0263 0.0291
22:01-23:00, Fri., 21 Feb. 0.0308 0.0270 0.0291
21:01-22:00, Fri., 21 Feb. 0.0311 0.0263 0.0292
20:01-21:00, Fri., 21 Feb. 0.0316 0.0270 0.0293
19:01-20:00, Fri., 21 Feb. 0.0315 0.0269 0.0296
18:01-19:00, Fri., 21 Feb. 0.0311 0.0275 0.0294
17:01-18:00, Fri., 21 Feb. 0.0318 0.0272 0.0292
16:01-17:00, Fri., 21 Feb. 0.0312 0.0280 0.0293
15:01-16:00, Fri., 21 Feb. 0.0322 0.0279 0.0297
14:01-15:00, Fri., 21 Feb. 0.0319 0.0276 0.0295
13:01-14:00, Fri., 21 Feb. 0.0321 0.0272 0.0295
12:01-13:00, Fri., 21 Feb. 0.0317 0.0266 0.0292
11:01-12:00, Fri., 21 Feb. 0.0318 0.0273 0.0292
10:01-11:00, Fri., 21 Feb. 0.0323 0.0273 0.0297
09:01-10:00, Fri., 21 Feb. 0.0326 0.0276 0.0297
08:01-09:00, Fri., 21 Feb. 0.0323 0.0270 0.0297
07:01-08:00, Fri., 21 Feb. 0.0319 0.0270 0.0295
06:01-07:00, Fri., 21 Feb. 0.0319 0.0270 0.0295
05:01-06:00, Fri., 21 Feb. 0.0317 0.0279 0.0296
04:01-05:00, Fri., 21 Feb. 0.0313 0.0276 0.0296
03:01-04:00, Fri., 21 Feb. 0.0313 0.0264 0.0293
02:01-03:00, Fri., 21 Feb. 0.0317 0.0273 0.0295
01:01-02:00, Fri., 21 Feb. 0.0321 0.0270 0.0293
00:01-01:00, Fri., 21 Feb. 0.0315 0.0276 0.0296
23:01-24:00, Thu., 20 Feb. 0.0317 0.0273 0.0292
22:01-23:00, Thu., 20 Feb. 0.0313 0.0273 0.0293
21:01-22:00, Thu., 20 Feb. 0.0318 0.0277 0.0294
20:01-21:00, Thu., 20 Feb. 0.0317 0.0273 0.0292
19:01-20:00, Thu., 20 Feb. 0.0326 0.0273 0.0296
18:01-19:00, Thu., 20 Feb. 0.0315 0.0273 0.0291
17:01-18:00, Thu., 20 Feb. 0.0309 0.0266 0.0292
16:01-17:00, Thu., 20 Feb. 0.0323 0.0271 0.0293
15:01-16:00, Thu., 20 Feb. 0.0314 0.0267 0.0292
14:01-15:00, Thu., 20 Feb. 0.0316 0.0274 0.0292
13:01-14:00, Thu., 20 Feb. 0.0315 0.0273 0.0293
12:01-13:00, Thu., 20 Feb. 0.0307 0.0263 0.0290
11:01-12:00, Thu., 20 Feb. 0.0311 0.0270 0.0292
10:01-11:00, Thu., 20 Feb. 0.0309 0.0265 0.0293
09:01-10:00, Thu., 20 Feb. 0.0308 0.0271 0.0293
08:01-09:00, Thu., 20 Feb. 0.0315 0.0273 0.0294
07:01-08:00, Thu., 20 Feb. 0.0315 0.0273 0.0292
06:01-07:00, Thu., 20 Feb. 0.0311 0.0276 0.0293
05:01-06:00, Thu., 20 Feb. 0.0312 0.0271 0.0292
04:01-05:00, Thu., 20 Feb. 0.0319 0.0273 0.0294
03:01-04:00, Thu., 20 Feb. 0.0319 0.0276 0.0294
02:01-03:00, Thu., 20 Feb. 0.0316 0.0268 0.0292
01:01-02:00, Thu., 20 Feb. 0.0311 0.0272 0.0292
00:01-01:00, Thu., 20 Feb. 0.0311 0.0271 0.0293
23:01-24:00, Wed., 19 Feb. 0.0318 0.0271 0.0290
22:01-23:00, Wed., 19 Feb. 0.0314 0.0278 0.0296
21:01-22:00, Wed., 19 Feb. 0.0317 0.0274 0.0295
20:01-21:00, Wed., 19 Feb. 0.0322 0.0274 0.0296
19:01-20:00, Wed., 19 Feb. 0.0318 0.0273 0.0295
18:01-19:00, Wed., 19 Feb. 0.0313 0.0273 0.0293
17:01-18:00, Wed., 19 Feb. 0.0323 0.0266 0.0295
16:01-17:00, Wed., 19 Feb. 0.0315 0.0278 0.0296
15:01-16:00, Wed., 19 Feb. 0.0311 0.0277 0.0295
14:01-15:00, Wed., 19 Feb. 0.0321 0.0280 0.0295
13:01-14:00, Wed., 19 Feb. 0.0323 0.0265 0.0295
12:01-13:00, Wed., 19 Feb. 0.0314 0.0278 0.0295
11:01-12:00, Wed., 19 Feb. 0.0316 0.0269 0.0293
10:01-11:00, Wed., 19 Feb. 0.0314 0.0282 0.0297
09:01-10:00, Wed., 19 Feb. 0.0319 0.0270 0.0296
08:01-09:00, Wed., 19 Feb. 0.0316 0.0266 0.0295
07:01-08:00, Wed., 19 Feb. 0.0319 0.0270 0.0292
06:01-07:00, Wed., 19 Feb. 0.0318 0.0275 0.0294
05:01-06:00, Wed., 19 Feb. 0.0326 0.0279 0.0297
04:01-05:00, Wed., 19 Feb. 0.0321 0.0279 0.0299
03:01-04:00, Wed., 19 Feb. 0.0329 0.0277 0.0299
02:01-03:00, Wed., 19 Feb. 0.0321 0.0276 0.0299
01:01-02:00, Wed., 19 Feb. 0.0318 0.0281 0.0299
00:01-01:00, Wed., 19 Feb. 0.0313 0.0271 0.0298
23:01-24:00, Tue., 18 Feb. 0.0327 0.0277 0.0302
22:01-23:00, Tue., 18 Feb. 0.0326 0.0287 0.0304
21:01-22:00, Tue., 18 Feb. 0.0323 0.0284 0.0304
20:01-21:00, Tue., 18 Feb. 0.0327 0.0283 0.0302
19:01-20:00, Tue., 18 Feb. 0.0323 0.0276 0.0299
18:01-19:00, Tue., 18 Feb. 0.0326 0.0282 0.0299
17:01-18:00, Tue., 18 Feb. 0.0319 0.0274 0.0295
16:01-17:00, Tue., 18 Feb. 0.0318 0.0278 0.0297
15:01-16:00, Tue., 18 Feb. 0.0321 0.0277 0.0297
14:01-15:00, Tue., 18 Feb. 0.0319 0.0270 0.0298
13:01-14:00, Tue., 18 Feb. 0.0315 0.0281 0.0298
12:01-13:00, Tue., 18 Feb. 0.0316 0.0279 0.0296
11:01-12:00, Tue., 18 Feb. 0.0322 0.0267 0.0297
10:01-11:00, Tue., 18 Feb. 0.0319 0.0276 0.0300
09:01-10:00, Tue., 18 Feb. 0.0319 0.0280 0.0298
08:01-09:00, Tue., 18 Feb. 0.0318 0.0266 0.0295
07:01-08:00, Tue., 18 Feb. 0.0315 0.0273 0.0294
06:01-07:00, Tue., 18 Feb. 0.0321 0.0266 0.0299
05:01-06:00, Tue., 18 Feb. 0.0340 0.0272 0.0302
04:01-05:00, Tue., 18 Feb. 0.0329 0.0281 0.0301
03:01-04:00, Tue., 18 Feb. 0.0332 0.0281 0.0303
02:01-03:00, Tue., 18 Feb. 0.0325 0.0286 0.0304
01:01-02:00, Tue., 18 Feb. 0.0321 0.0280 0.0304
00:01-01:00, Tue., 18 Feb. 0.0329 0.0273 0.0305
23:01-24:00, Mon., 17 Feb. 0.0332 0.0281 0.0307
22:01-23:00, Mon., 17 Feb. 0.0327 0.0280 0.0305
21:01-22:00, Mon., 17 Feb. 0.0328 0.0280 0.0305
20:01-21:00, Mon., 17 Feb. 0.0328 0.0281 0.0303
19:01-20:00, Mon., 17 Feb. 0.0334 0.0287 0.0305
18:01-19:00, Mon., 17 Feb. 0.0330 0.0280 0.0303
17:01-18:00, Mon., 17 Feb. 0.0325 0.0280 0.0306
16:01-17:00, Mon., 17 Feb. 0.0329 0.0277 0.0301
15:01-16:00, Mon., 17 Feb. 0.0319 0.0279 0.0296
14:01-15:00, Mon., 17 Feb. 0.0334 0.0278 0.0300
13:01-14:00, Mon., 17 Feb. 0.0320 0.0283 0.0300
12:01-13:00, Mon., 17 Feb. 0.0322 0.0280 0.0298
11:01-12:00, Mon., 17 Feb. 0.0322 0.0276 0.0298
10:01-11:00, Mon., 17 Feb. 0.0319 0.0276 0.0296
09:01-10:00, Mon., 17 Feb. 0.0325 0.0271 0.0298
08:01-09:00, Mon., 17 Feb. 0.0326 0.0270 0.0299
07:01-08:00, Mon., 17 Feb. 0.0323 0.0276 0.0297
06:01-07:00, Mon., 17 Feb. 0.0321 0.0277 0.0300
05:01-06:00, Mon., 17 Feb. 0.0324 0.0277 0.0299
04:01-05:00, Mon., 17 Feb. 0.0322 0.0284 0.0302
03:01-04:00, Mon., 17 Feb. 0.0318 0.0286 0.0302
02:01-03:00, Mon., 17 Feb. 0.0321 0.0270 0.0299
01:01-02:00, Mon., 17 Feb. 0.0314 0.0276 0.0298
00:01-01:00, Mon., 17 Feb. 0.0315 0.0271 0.0296
23:01-24:00, Sun., 16 Feb. 0.0332 0.0268 0.0298
22:01-23:00, Sun., 16 Feb. 0.0325 0.0274 0.0299
21:01-22:00, Sun., 16 Feb. 0.0319 0.0276 0.0296
20:01-21:00, Sun., 16 Feb. 0.0312 0.0276 0.0295
19:01-20:00, Sun., 16 Feb. 0.0313 0.0267 0.0291
18:01-19:00, Sun., 16 Feb. 0.0321 0.0273 0.0294
17:01-18:00, Sun., 16 Feb. 0.0310 0.0270 0.0292
16:01-17:00, Sun., 16 Feb. 0.0317 0.0271 0.0296
15:01-16:00, Sun., 16 Feb. 0.0332 0.0280 0.0297
14:01-15:00, Sun., 16 Feb. 0.0318 0.0270 0.0300
13:01-14:00, Sun., 16 Feb. 0.0338 0.0278 0.0302
12:01-13:00, Sun., 16 Feb. 0.0325 0.0280 0.0303
11:01-12:00, Sun., 16 Feb. 0.0318 0.0273 0.0300
10:01-11:00, Sun., 16 Feb. 0.0322 0.0280 0.0301
09:01-10:00, Sun., 16 Feb. 0.0320 0.0280 0.0301
08:01-09:00, Sun., 16 Feb. 0.0329 0.0287 0.0303
07:01-08:00, Sun., 16 Feb. 0.0324 0.0277 0.0300
06:01-07:00, Sun., 16 Feb. 0.0323 0.0276 0.0301
05:01-06:00, Sun., 16 Feb. 0.0319 0.0275 0.0301
04:01-05:00, Sun., 16 Feb. 0.0315 0.0280 0.0297
03:01-04:00, Sun., 16 Feb. 0.0325 0.0280 0.0298
02:01-03:00, Sun., 16 Feb. 0.0324 0.0272 0.0297
01:01-02:00, Sun., 16 Feb. 0.0316 0.0280 0.0297
00:01-01:00, Sun., 16 Feb. 0.0313 0.0271 0.0292
23:01-24:00, Sat., 15 Feb. 0.0309 0.0273 0.0291
22:01-23:00, Sat., 15 Feb. 0.0307 0.0271 0.0289
21:01-22:00, Sat., 15 Feb. 0.0311 0.0268 0.0289
20:01-21:00, Sat., 15 Feb. 0.0310 0.0256 0.0288
19:01-20:00, Sat., 15 Feb. 0.0322 0.0270 0.0295
18:01-19:00, Sat., 15 Feb. 0.0306 0.0272 0.0289
17:01-18:00, Sat., 15 Feb. 0.0311 0.0263 0.0288
16:01-17:00, Sat., 15 Feb. 0.0314 0.0273 0.0292
15:01-16:00, Sat., 15 Feb. 0.0312 0.0274 0.0294
14:01-15:00, Sat., 15 Feb. 0.0316 0.0268 0.0292
13:01-14:00, Sat., 15 Feb. 0.0315 0.0275 0.0295
12:01-13:00, Sat., 15 Feb. 0.0315 0.0276 0.0293
11:01-12:00, Sat., 15 Feb. 0.0313 0.0275 0.0292
10:01-11:00, Sat., 15 Feb. 0.0323 0.0268 0.0295
09:01-10:00, Sat., 15 Feb. 0.0322 0.0261 0.0294
08:01-09:00, Sat., 15 Feb. 0.0316 0.0274 0.0294
07:01-08:00, Sat., 15 Feb. 0.0308 0.0280 0.0294
06:01-07:00, Sat., 15 Feb. 0.0316 0.0272 0.0292
05:01-06:00, Sat., 15 Feb. 0.0318 0.0270 0.0293
04:01-05:00, Sat., 15 Feb. 0.0315 0.0266 0.0289
03:01-04:00, Sat., 15 Feb. 0.0309 0.0276 0.0293
02:01-03:00, Sat., 15 Feb. 0.0313 0.0270 0.0292
01:01-02:00, Sat., 15 Feb. 0.0308 0.0270 0.0291
00:01-01:00, Sat., 15 Feb. 0.0318 0.0270 0.0291
23:01-24:00, Fri., 14 Feb. 0.0313 0.0277 0.0292
22:01-23:00, Fri., 14 Feb. 0.0312 0.0270 0.0291
21:01-22:00, Fri., 14 Feb. 0.0308 0.0273 0.0291
20:01-21:00, Fri., 14 Feb. 0.0317 0.0263 0.0291
19:01-20:00, Fri., 14 Feb. 0.0316 0.0274 0.0294
18:01-19:00, Fri., 14 Feb. 0.0330 0.0263 0.0292
17:01-18:00, Fri., 14 Feb. 0.0316 0.0271 0.0289
16:01-17:00, Fri., 14 Feb. 0.0306 0.0269 0.0290
15:01-16:00, Fri., 14 Feb. 0.0312 0.0267 0.0293
14:01-15:00, Fri., 14 Feb. 0.0319 0.0270 0.0294
13:01-14:00, Fri., 14 Feb. 0.0315 0.0270 0.0298
12:01-13:00, Fri., 14 Feb. 0.0331 0.0274 0.0295
11:01-12:00, Fri., 14 Feb. 0.0311 0.0276 0.0296
10:01-11:00, Fri., 14 Feb. 0.0318 0.0279 0.0298
09:01-10:00, Fri., 14 Feb. 0.0313 0.0272 0.0295
08:01-09:00, Fri., 14 Feb. 0.0311 0.0272 0.0295
07:01-08:00, Fri., 14 Feb. 0.0318 0.0271 0.0294
06:01-07:00, Fri., 14 Feb. 0.0317 0.0270 0.0295
05:01-06:00, Fri., 14 Feb. 0.0310 0.0271 0.0292
04:01-05:00, Fri., 14 Feb. 0.0316 0.0272 0.0295
03:01-04:00, Fri., 14 Feb. 0.0329 0.0270 0.0295
02:01-03:00, Fri., 14 Feb. 0.0314 0.0270 0.0295
01:01-02:00, Fri., 14 Feb. 0.0318 0.0274 0.0295
00:01-01:00, Fri., 14 Feb. 0.0310 0.0269 0.0290
23:01-24:00, Thu., 13 Feb. 0.0315 0.0273 0.0294
22:01-23:00, Thu., 13 Feb. 0.0315 0.0276 0.0295
21:01-22:00, Thu., 13 Feb. 0.0318 0.0278 0.0296
20:01-21:00, Thu., 13 Feb. 0.0318 0.0279 0.0297
19:01-20:00, Thu., 13 Feb. 0.0318 0.0265 0.0293
18:01-19:00, Thu., 13 Feb. 0.0313 0.0271 0.0294
17:01-18:00, Thu., 13 Feb. 0.0313 0.0273 0.0294
16:01-17:00, Thu., 13 Feb. 0.0325 0.0269 0.0299
15:01-16:00, Thu., 13 Feb. 0.0338 0.0276 0.0300