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
13:01-14:00, Sat., 20 Apr. 0.0326 0.0274 0.0306
12:01-13:00, Sat., 20 Apr. 0.0329 0.0280 0.0307
11:01-12:00, Sat., 20 Apr. 0.0324 0.0277 0.0302
10:01-11:00, Sat., 20 Apr. 0.0318 0.0270 0.0299
09:01-10:00, Sat., 20 Apr. 0.0326 0.0270 0.0303
08:01-09:00, Sat., 20 Apr. 0.0328 0.0283 0.0305
07:01-08:00, Sat., 20 Apr. 0.0323 0.0282 0.0302
06:01-07:00, Sat., 20 Apr. 0.0325 0.0282 0.0301
05:01-06:00, Sat., 20 Apr. 0.0324 0.0275 0.0299
04:01-05:00, Sat., 20 Apr. 0.0332 0.0270 0.0297
03:01-04:00, Sat., 20 Apr. 0.0321 0.0282 0.0302
02:01-03:00, Sat., 20 Apr. 0.0322 0.0282 0.0302
01:01-02:00, Sat., 20 Apr. 0.0325 0.0279 0.0302
00:01-01:00, Sat., 20 Apr. 0.0328 0.0279 0.0301
23:01-24:00, Fri., 19 Apr. 0.0326 0.0285 0.0304
22:01-23:00, Fri., 19 Apr. 0.0322 0.0283 0.0300
21:01-22:00, Fri., 19 Apr. 0.0326 0.0281 0.0302
20:01-21:00, Fri., 19 Apr. 0.0321 0.0280 0.0302
19:01-20:00, Fri., 19 Apr. 0.0320 0.0280 0.0301
18:01-19:00, Fri., 19 Apr. 0.0318 0.0278 0.0299
17:01-18:00, Fri., 19 Apr. 0.0320 0.0277 0.0300
16:01-17:00, Fri., 19 Apr. 0.0327 0.0280 0.0301
15:01-16:00, Fri., 19 Apr. 0.0322 0.0273 0.0300
14:01-15:00, Fri., 19 Apr. 0.0323 0.0277 0.0300
13:01-14:00, Fri., 19 Apr. 0.0322 0.0280 0.0305
12:01-13:00, Fri., 19 Apr. 0.0325 0.0287 0.0306
11:01-12:00, Fri., 19 Apr. 0.0323 0.0283 0.0306
10:01-11:00, Fri., 19 Apr. 0.0318 0.0286 0.0301
09:01-10:00, Fri., 19 Apr. 0.0323 0.0273 0.0301
08:01-09:00, Fri., 19 Apr. 0.0327 0.0279 0.0301
07:01-08:00, Fri., 19 Apr. 0.0322 0.0276 0.0302
06:01-07:00, Fri., 19 Apr. 0.0332 0.0275 0.0301
05:01-06:00, Fri., 19 Apr. 0.0326 0.0277 0.0301
04:01-05:00, Fri., 19 Apr. 0.0326 0.0292 0.0307
03:01-04:00, Fri., 19 Apr. 0.0329 0.0281 0.0302
02:01-03:00, Fri., 19 Apr. 0.0322 0.0277 0.0300
01:01-02:00, Fri., 19 Apr. 0.0322 0.0283 0.0304
00:01-01:00, Fri., 19 Apr. 0.0331 0.0282 0.0310
23:01-24:00, Thu., 18 Apr. 0.0335 0.0296 0.0314
22:01-23:00, Thu., 18 Apr. 0.0367 0.0308 0.0330
21:01-22:00, Thu., 18 Apr. 0.0368 0.0315 0.0338
20:01-21:00, Thu., 18 Apr. 0.0373 0.0323 0.0344
19:01-20:00, Thu., 18 Apr. 0.0378 0.0325 0.0348
18:01-19:00, Thu., 18 Apr. 0.0361 0.0279 0.0310
17:01-18:00, Thu., 18 Apr. 0.0317 0.0280 0.0297
16:01-17:00, Thu., 18 Apr. 0.0331 0.0273 0.0300
15:01-16:00, Thu., 18 Apr. 0.0316 0.0276 0.0299
14:01-15:00, Thu., 18 Apr. 0.0371 0.0275 0.0296
13:01-14:00, Thu., 18 Apr. 0.0323 0.0276 0.0298
12:01-13:00, Thu., 18 Apr. 0.0326 0.0280 0.0300
11:01-12:00, Thu., 18 Apr. 0.0322 0.0274 0.0299
10:01-11:00, Thu., 18 Apr. 0.0318 0.0276 0.0298
09:01-10:00, Thu., 18 Apr. 0.0319 0.0283 0.0303
08:01-09:00, Thu., 18 Apr. 0.0325 0.0273 0.0299
07:01-08:00, Thu., 18 Apr. 0.0328 0.0276 0.0299
06:01-07:00, Thu., 18 Apr. 0.0322 0.0276 0.0303
05:01-06:00, Thu., 18 Apr. 0.0327 0.0280 0.0299
04:01-05:00, Thu., 18 Apr. 0.0326 0.0265 0.0299
03:01-04:00, Thu., 18 Apr. 0.0321 0.0277 0.0296
02:01-03:00, Thu., 18 Apr. 0.0318 0.0278 0.0294
01:01-02:00, Thu., 18 Apr. 0.0323 0.0272 0.0296
00:01-01:00, Thu., 18 Apr. 0.0326 0.0269 0.0295
23:01-24:00, Wed., 17 Apr. 0.0315 0.0268 0.0294
22:01-23:00, Wed., 17 Apr. 0.0311 0.0273 0.0293
21:01-22:00, Wed., 17 Apr. 0.0320 0.0273 0.0292
20:01-21:00, Wed., 17 Apr. 0.0307 0.0256 0.0292
19:01-20:00, Wed., 17 Apr. 0.0314 0.0277 0.0294
18:01-19:00, Wed., 17 Apr. 0.0325 0.0265 0.0294
17:01-18:00, Wed., 17 Apr. 0.0309 0.0270 0.0288
16:01-17:00, Wed., 17 Apr. 0.0318 0.0267 0.0291
15:01-16:00, Wed., 17 Apr. 0.0321 0.0278 0.0301
14:01-15:00, Wed., 17 Apr. 0.0321 0.0276 0.0299
13:01-14:00, Wed., 17 Apr. 0.0332 0.0273 0.0298
12:01-13:00, Wed., 17 Apr. 0.0313 0.0275 0.0296
11:01-12:00, Wed., 17 Apr. 0.0321 0.0275 0.0296
10:01-11:00, Wed., 17 Apr. 0.0306 0.0264 0.0290
09:01-10:00, Wed., 17 Apr. 0.0315 0.0262 0.0288
08:01-09:00, Wed., 17 Apr. 0.0316 0.0275 0.0290
07:01-08:00, Wed., 17 Apr. 0.0311 0.0271 0.0289
06:01-07:00, Wed., 17 Apr. 0.0313 0.0276 0.0292
05:01-06:00, Wed., 17 Apr. 0.0308 0.0263 0.0289
04:01-05:00, Wed., 17 Apr. 0.0312 0.0267 0.0290
03:01-04:00, Wed., 17 Apr. 0.0309 0.0262 0.0290
02:01-03:00, Wed., 17 Apr. 0.0318 0.0272 0.0291
01:01-02:00, Wed., 17 Apr. 0.0319 0.0261 0.0292
00:01-01:00, Wed., 17 Apr. 0.0314 0.0270 0.0290
23:01-24:00, Tue., 16 Apr. 0.0315 0.0272 0.0292
22:01-23:00, Tue., 16 Apr. 0.0317 0.0267 0.0293
21:01-22:00, Tue., 16 Apr. 0.0311 0.0271 0.0290
20:01-21:00, Tue., 16 Apr. 0.0311 0.0268 0.0287
19:01-20:00, Tue., 16 Apr. 0.0309 0.0266 0.0286
18:01-19:00, Tue., 16 Apr. 0.0310 0.0263 0.0290
17:01-18:00, Tue., 16 Apr. 0.0312 0.0263 0.0286
16:01-17:00, Tue., 16 Apr. 0.0311 0.0271 0.0293
15:01-16:00, Tue., 16 Apr. 0.0316 0.0270 0.0293
14:01-15:00, Tue., 16 Apr. 0.0315 0.0270 0.0291
13:01-14:00, Tue., 16 Apr. 0.0319 0.0276 0.0294
12:01-13:00, Tue., 16 Apr. 0.0311 0.0264 0.0288
11:01-12:00, Tue., 16 Apr. 0.0302 0.0274 0.0287
10:01-11:00, Tue., 16 Apr. 0.0311 0.0265 0.0288
09:01-10:00, Tue., 16 Apr. 0.0308 0.0268 0.0288
08:01-09:00, Tue., 16 Apr. 0.0307 0.0265 0.0286
07:01-08:00, Tue., 16 Apr. 0.0308 0.0269 0.0284
06:01-07:00, Tue., 16 Apr. 0.0309 0.0265 0.0285
05:01-06:00, Tue., 16 Apr. 0.0309 0.0270 0.0288
04:01-05:00, Tue., 16 Apr. 0.0308 0.0256 0.0288
03:01-04:00, Tue., 16 Apr. 0.0311 0.0274 0.0289
02:01-03:00, Tue., 16 Apr. 0.0312 0.0270 0.0287
01:01-02:00, Tue., 16 Apr. 0.0314 0.0266 0.0286
00:01-01:00, Tue., 16 Apr. 0.0304 0.0267 0.0286
23:01-24:00, Mon., 15 Apr. 0.0311 0.0258 0.0287
22:01-23:00, Mon., 15 Apr. 0.0303 0.0270 0.0286
21:01-22:00, Mon., 15 Apr. 0.0302 0.0266 0.0283
20:01-21:00, Mon., 15 Apr. 0.0314 0.0266 0.0285
19:01-20:00, Mon., 15 Apr. 0.0317 0.0270 0.0290
18:01-19:00, Mon., 15 Apr. 0.0309 0.0270 0.0287
17:01-18:00, Mon., 15 Apr. 0.0312 0.0269 0.0291
16:01-17:00, Mon., 15 Apr. 0.0314 0.0275 0.0296
15:01-16:00, Mon., 15 Apr. 0.0311 0.0268 0.0294
14:01-15:00, Mon., 15 Apr. 0.0325 0.0266 0.0297
13:01-14:00, Mon., 15 Apr. 0.0315 0.0275 0.0295
12:01-13:00, Mon., 15 Apr. 0.0322 0.0274 0.0296
11:01-12:00, Mon., 15 Apr. 0.0316 0.0276 0.0296
10:01-11:00, Mon., 15 Apr. 0.0313 0.0270 0.0291
09:01-10:00, Mon., 15 Apr. 0.0310 0.0273 0.0293
08:01-09:00, Mon., 15 Apr. 0.0309 0.0264 0.0292
07:01-08:00, Mon., 15 Apr. 0.0312 0.0261 0.0289
06:01-07:00, Mon., 15 Apr. 0.0308 0.0270 0.0290
05:01-06:00, Mon., 15 Apr. 0.0311 0.0261 0.0286
04:01-05:00, Mon., 15 Apr. 0.0308 0.0247 0.0286
03:01-04:00, Mon., 15 Apr. 0.0308 0.0266 0.0287
02:01-03:00, Mon., 15 Apr. 0.0308 0.0269 0.0286
01:01-02:00, Mon., 15 Apr. 0.0308 0.0264 0.0288
00:01-01:00, Mon., 15 Apr. 0.0310 0.0267 0.0287
23:01-24:00, Sun., 14 Apr. 0.0306 0.0270 0.0287
22:01-23:00, Sun., 14 Apr. 0.0310 0.0266 0.0287
21:01-22:00, Sun., 14 Apr. 0.0310 0.0264 0.0286
20:01-21:00, Sun., 14 Apr. 0.0314 0.0264 0.0286
19:01-20:00, Sun., 14 Apr. 0.0308 0.0265 0.0287
18:01-19:00, Sun., 14 Apr. 0.0308 0.0265 0.0286
17:01-18:00, Sun., 14 Apr. 0.0315 0.0266 0.0290
16:01-17:00, Sun., 14 Apr. 0.0308 0.0257 0.0291
15:01-16:00, Sun., 14 Apr. 0.0322 0.0267 0.0290
14:01-15:00, Sun., 14 Apr. 0.0313 0.0259 0.0286
13:01-14:00, Sun., 14 Apr. 0.0304 0.0269 0.0287
12:01-13:00, Sun., 14 Apr. 0.0300 0.0256 0.0281
11:01-12:00, Sun., 14 Apr. 0.0300 0.0255 0.0280
10:01-11:00, Sun., 14 Apr. 0.0308 0.0267 0.0284
09:01-10:00, Sun., 14 Apr. 0.0305 0.0270 0.0288
08:01-09:00, Sun., 14 Apr. 0.0315 0.0264 0.0286
07:01-08:00, Sun., 14 Apr. 0.0311 0.0269 0.0290
06:01-07:00, Sun., 14 Apr. 0.0315 0.0270 0.0289
05:01-06:00, Sun., 14 Apr. 0.0308 0.0256 0.0289
04:01-05:00, Sun., 14 Apr. 0.0304 0.0259 0.0286
03:01-04:00, Sun., 14 Apr. 0.0319 0.0266 0.0289
02:01-03:00, Sun., 14 Apr. 0.0308 0.0257 0.0285
01:01-02:00, Sun., 14 Apr. 0.0301 0.0266 0.0286
00:01-01:00, Sun., 14 Apr. 0.0311 0.0263 0.0288
23:01-24:00, Sat., 13 Apr. 0.0315 0.0272 0.0291
22:01-23:00, Sat., 13 Apr. 0.0299 0.0274 0.0287
21:01-22:00, Sat., 13 Apr. 0.0308 0.0263 0.0288
20:01-21:00, Sat., 13 Apr. 0.0311 0.0266 0.0287
19:01-20:00, Sat., 13 Apr. 0.0307 0.0270 0.0286
18:01-19:00, Sat., 13 Apr. 0.0322 0.0270 0.0284
17:01-18:00, Sat., 13 Apr. 0.0308 0.0256 0.0284
16:01-17:00, Sat., 13 Apr. 0.0307 0.0251 0.0283
15:01-16:00, Sat., 13 Apr. 0.0313 0.0259 0.0286
14:01-15:00, Sat., 13 Apr. 0.0304 0.0261 0.0285
13:01-14:00, Sat., 13 Apr. 0.0315 0.0268 0.0284
12:01-13:00, Sat., 13 Apr. 0.0311 0.0260 0.0283
11:01-12:00, Sat., 13 Apr. 0.0312 0.0270 0.0287
10:01-11:00, Sat., 13 Apr. 0.0309 0.0270 0.0287
09:01-10:00, Sat., 13 Apr. 0.0306 0.0263 0.0286
08:01-09:00, Sat., 13 Apr. 0.0308 0.0270 0.0288
07:01-08:00, Sat., 13 Apr. 0.0308 0.0261 0.0288
06:01-07:00, Sat., 13 Apr. 0.0315 0.0263 0.0288
05:01-06:00, Sat., 13 Apr. 0.0308 0.0266 0.0287
04:01-05:00, Sat., 13 Apr. 0.0308 0.0262 0.0285
03:01-04:00, Sat., 13 Apr. 0.0307 0.0270 0.0287
02:01-03:00, Sat., 13 Apr. 0.0322 0.0258 0.0284
01:01-02:00, Sat., 13 Apr. 0.0308 0.0268 0.0284
00:01-01:00, Sat., 13 Apr. 0.0305 0.0268 0.0285
23:01-24:00, Fri., 12 Apr. 0.0305 0.0264 0.0281
22:01-23:00, Fri., 12 Apr. 0.0302 0.0257 0.0283
21:01-22:00, Fri., 12 Apr. 0.0301 0.0270 0.0285
20:01-21:00, Fri., 12 Apr. 0.0308 0.0259 0.0282
19:01-20:00, Fri., 12 Apr. 0.0303 0.0264 0.0283
18:01-19:00, Fri., 12 Apr. 0.0295 0.0264 0.0280
17:01-18:00, Fri., 12 Apr. 0.0308 0.0256 0.0282
16:01-17:00, Fri., 12 Apr. 0.0311 0.0258 0.0285
15:01-16:00, Fri., 12 Apr. 0.0314 0.0259 0.0286
14:01-15:00, Fri., 12 Apr. 0.0316 0.0271 0.0294
13:01-14:00, Fri., 12 Apr. 0.0351 0.0288 0.0314
12:01-13:00, Fri., 12 Apr. 0.0349 0.0301 0.0327
11:01-12:00, Fri., 12 Apr. 0.0346 0.0263 0.0299
10:01-11:00, Fri., 12 Apr. 0.0314 0.0266 0.0289
09:01-10:00, Fri., 12 Apr. 0.0313 0.0262 0.0290
08:01-09:00, Fri., 12 Apr. 0.0319 0.0266 0.0289
07:01-08:00, Fri., 12 Apr. 0.0312 0.0273 0.0290
06:01-07:00, Fri., 12 Apr. 0.0308 0.0265 0.0284
05:01-06:00, Fri., 12 Apr. 0.0311 0.0270 0.0287
04:01-05:00, Fri., 12 Apr. 0.0315 0.0260 0.0290
03:01-04:00, Fri., 12 Apr. 0.0322 0.0266 0.0287
02:01-03:00, Fri., 12 Apr. 0.0306 0.0273 0.0291
01:01-02:00, Fri., 12 Apr. 0.0304 0.0267 0.0285
00:01-01:00, Fri., 12 Apr. 0.0304 0.0265 0.0284
23:01-24:00, Thu., 11 Apr. 0.0309 0.0264 0.0286
22:01-23:00, Thu., 11 Apr. 0.0311 0.0264 0.0286
21:01-22:00, Thu., 11 Apr. 0.0307 0.0265 0.0284
20:01-21:00, Thu., 11 Apr. 0.0306 0.0259 0.0285
19:01-20:00, Thu., 11 Apr. 0.0306 0.0259 0.0283
18:01-19:00, Thu., 11 Apr. 0.0298 0.0259 0.0283
17:01-18:00, Thu., 11 Apr. 0.0308 0.0262 0.0283
16:01-17:00, Thu., 11 Apr. 0.0304 0.0265 0.0284
15:01-16:00, Thu., 11 Apr. 0.0334 0.0270 0.0290
14:01-15:00, Thu., 11 Apr. 0.0307 0.0260 0.0284
13:01-14:00, Thu., 11 Apr. 0.0308 0.0265 0.0285
12:01-13:00, Thu., 11 Apr. 0.0317 0.0266 0.0287
11:01-12:00, Thu., 11 Apr. 0.0302 0.0263 0.0284
10:01-11:00, Thu., 11 Apr. 0.0311 0.0267 0.0285
09:01-10:00, Thu., 11 Apr. 0.0306 0.0259 0.0286
08:01-09:00, Thu., 11 Apr. 0.0301 0.0264 0.0285
07:01-08:00, Thu., 11 Apr. 0.0304 0.0262 0.0285
06:01-07:00, Thu., 11 Apr. 0.0308 0.0267 0.0286
05:01-06:00, Thu., 11 Apr. 0.0306 0.0267 0.0283
04:01-05:00, Thu., 11 Apr. 0.0305 0.0266 0.0284
03:01-04:00, Thu., 11 Apr. 0.0307 0.0266 0.0284
02:01-03:00, Thu., 11 Apr. 0.0311 0.0262 0.0284
01:01-02:00, Thu., 11 Apr. 0.0299 0.0262 0.0283
00:01-01:00, Thu., 11 Apr. 0.0302 0.0266 0.0282
23:01-24:00, Wed., 10 Apr. 0.0310 0.0260 0.0284
22:01-23:00, Wed., 10 Apr. 0.0302 0.0268 0.0284
21:01-22:00, Wed., 10 Apr. 0.0304 0.0262 0.0282
20:01-21:00, Wed., 10 Apr. 0.0304 0.0259 0.0282
19:01-20:00, Wed., 10 Apr. 0.0302 0.0260 0.0286
18:01-19:00, Wed., 10 Apr. 0.0302 0.0264 0.0282
17:01-18:00, Wed., 10 Apr. 0.0309 0.0259 0.0283
16:01-17:00, Wed., 10 Apr. 0.0312 0.0267 0.0288
15:01-16:00, Wed., 10 Apr. 0.0309 0.0269 0.0287
14:01-15:00, Wed., 10 Apr. 0.0308 0.0264 0.0286