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
20:01-21:00, Sun., 22 Mar. 0.0310 0.0270 0.0289
19:01-20:00, Sun., 22 Mar. 0.0310 0.0270 0.0290
18:01-19:00, Sun., 22 Mar. 0.0311 0.0262 0.0288
17:01-18:00, Sun., 22 Mar. 0.0310 0.0272 0.0290
16:01-17:00, Sun., 22 Mar. 0.0308 0.0276 0.0292
15:01-16:00, Sun., 22 Mar. 0.0321 0.0270 0.0292
14:01-15:00, Sun., 22 Mar. 0.0306 0.0274 0.0292
13:01-14:00, Sun., 22 Mar. 0.0323 0.0273 0.0293
12:01-13:00, Sun., 22 Mar. 0.0322 0.0273 0.0296
11:01-12:00, Sun., 22 Mar. 0.0324 0.0279 0.0297
10:01-11:00, Sun., 22 Mar. 0.0325 0.0272 0.0299
09:01-10:00, Sun., 22 Mar. 0.0322 0.0272 0.0301
08:01-09:00, Sun., 22 Mar. 0.0329 0.0287 0.0303
07:01-08:00, Sun., 22 Mar. 0.0325 0.0283 0.0301
06:01-07:00, Sun., 22 Mar. 0.0318 0.0280 0.0299
05:01-06:00, Sun., 22 Mar. 0.0323 0.0280 0.0297
04:01-05:00, Sun., 22 Mar. 0.0318 0.0273 0.0296
03:01-04:00, Sun., 22 Mar. 0.0327 0.0279 0.0296
02:01-03:00, Sun., 22 Mar. 0.0312 0.0276 0.0298
01:01-02:00, Sun., 22 Mar. 0.0310 0.0273 0.0294
00:01-01:00, Sun., 22 Mar. 0.0311 0.0264 0.0289
23:01-24:00, Sat., 21 Mar. 0.0316 0.0268 0.0289
22:01-23:00, Sat., 21 Mar. 0.0311 0.0275 0.0291
21:01-22:00, Sat., 21 Mar. 0.0311 0.0266 0.0290
20:01-21:00, Sat., 21 Mar. 0.0308 0.0263 0.0285
19:01-20:00, Sat., 21 Mar. 0.0309 0.0269 0.0288
18:01-19:00, Sat., 21 Mar. 0.0308 0.0268 0.0288
17:01-18:00, Sat., 21 Mar. 0.0313 0.0273 0.0289
16:01-17:00, Sat., 21 Mar. 0.0311 0.0264 0.0289
15:01-16:00, Sat., 21 Mar. 0.0319 0.0272 0.0293
14:01-15:00, Sat., 21 Mar. 0.0312 0.0273 0.0292
13:01-14:00, Sat., 21 Mar. 0.0315 0.0273 0.0294
12:01-13:00, Sat., 21 Mar. 0.0313 0.0261 0.0292
11:01-12:00, Sat., 21 Mar. 0.0308 0.0271 0.0288
10:01-11:00, Sat., 21 Mar. 0.0318 0.0270 0.0292
09:01-10:00, Sat., 21 Mar. 0.0315 0.0270 0.0293
08:01-09:00, Sat., 21 Mar. 0.0306 0.0270 0.0288
07:01-08:00, Sat., 21 Mar. 0.0313 0.0264 0.0287
06:01-07:00, Sat., 21 Mar. 0.0322 0.0271 0.0293
05:01-06:00, Sat., 21 Mar. 0.0313 0.0272 0.0293
04:01-05:00, Sat., 21 Mar. 0.0307 0.0269 0.0285
03:01-04:00, Sat., 21 Mar. 0.0304 0.0265 0.0287
02:01-03:00, Sat., 21 Mar. 0.0318 0.0270 0.0291
01:01-02:00, Sat., 21 Mar. 0.0313 0.0266 0.0293
00:01-01:00, Sat., 21 Mar. 0.0315 0.0259 0.0289
23:01-24:00, Fri., 20 Mar. 0.0317 0.0266 0.0290
22:01-23:00, Fri., 20 Mar. 0.0305 0.0266 0.0286
21:01-22:00, Fri., 20 Mar. 0.0305 0.0268 0.0290
20:01-21:00, Fri., 20 Mar. 0.0314 0.0264 0.0290
19:01-20:00, Fri., 20 Mar. 0.0310 0.0278 0.0293
18:01-19:00, Fri., 20 Mar. 0.0311 0.0268 0.0291
17:01-18:00, Fri., 20 Mar. 0.0311 0.0270 0.0288
16:01-17:00, Fri., 20 Mar. 0.0311 0.0264 0.0288
15:01-16:00, Fri., 20 Mar. 0.0320 0.0281 0.0297
14:01-15:00, Fri., 20 Mar. 0.0363 0.0289 0.0319
13:01-14:00, Fri., 20 Mar. 0.0415 0.0332 0.0366
12:01-13:00, Fri., 20 Mar. 0.0434 0.0374 0.0400
11:01-12:00, Fri., 20 Mar. 0.0419 0.0338 0.0378
10:01-11:00, Fri., 20 Mar. 0.0412 0.0329 0.0366
09:01-10:00, Fri., 20 Mar. 0.0408 0.0331 0.0382
08:01-09:00, Fri., 20 Mar. 0.0379 0.0309 0.0340
07:01-08:00, Fri., 20 Mar. 0.0342 0.0276 0.0304
06:01-07:00, Fri., 20 Mar. 0.0316 0.0284 0.0300
05:01-06:00, Fri., 20 Mar. 0.0317 0.0281 0.0297
04:01-05:00, Fri., 20 Mar. 0.0314 0.0270 0.0294
03:01-04:00, Fri., 20 Mar. 0.0322 0.0274 0.0299
02:01-03:00, Fri., 20 Mar. 0.0346 0.0288 0.0315
01:01-02:00, Fri., 20 Mar. 0.0415 0.0306 0.0359
00:01-01:00, Fri., 20 Mar. 0.0424 0.0327 0.0379
23:01-24:00, Thu., 19 Mar. 0.0343 0.0266 0.0301
22:01-23:00, Thu., 19 Mar. 0.0324 0.0263 0.0292
21:01-22:00, Thu., 19 Mar. 0.0317 0.0265 0.0291
20:01-21:00, Thu., 19 Mar. 0.0327 0.0275 0.0297
19:01-20:00, Thu., 19 Mar. 0.0326 0.0276 0.0299
18:01-19:00, Thu., 19 Mar. 0.0336 0.0275 0.0307
17:01-18:00, Thu., 19 Mar. 0.0316 0.0262 0.0292
16:01-17:00, Thu., 19 Mar. 0.0315 0.0278 0.0294
15:01-16:00, Thu., 19 Mar. 0.0313 0.0270 0.0294
14:01-15:00, Thu., 19 Mar. 0.0318 0.0276 0.0293
13:01-14:00, Thu., 19 Mar. 0.0325 0.0280 0.0301
12:01-13:00, Thu., 19 Mar. 0.0324 0.0278 0.0300
11:01-12:00, Thu., 19 Mar. 0.0320 0.0280 0.0300
10:01-11:00, Thu., 19 Mar. 0.0329 0.0280 0.0300
09:01-10:00, Thu., 19 Mar. 0.0324 0.0282 0.0299
08:01-09:00, Thu., 19 Mar. 0.0323 0.0278 0.0300
07:01-08:00, Thu., 19 Mar. 0.0316 0.0279 0.0297
06:01-07:00, Thu., 19 Mar. 0.0339 0.0280 0.0306
05:01-06:00, Thu., 19 Mar. 0.0328 0.0280 0.0309
04:01-05:00, Thu., 19 Mar. 0.0320 0.0270 0.0291
03:01-04:00, Thu., 19 Mar. 0.0308 0.0267 0.0290
02:01-03:00, Thu., 19 Mar. 0.0312 0.0268 0.0289
01:01-02:00, Thu., 19 Mar. 0.0312 0.0277 0.0293
00:01-01:00, Thu., 19 Mar. 0.0326 0.0267 0.0289
23:01-24:00, Wed., 18 Mar. 0.0315 0.0271 0.0288
22:01-23:00, Wed., 18 Mar. 0.0308 0.0271 0.0289
21:01-22:00, Wed., 18 Mar. 0.0311 0.0265 0.0289
20:01-21:00, Wed., 18 Mar. 0.0305 0.0267 0.0287
19:01-20:00, Wed., 18 Mar. 0.0308 0.0266 0.0285
18:01-19:00, Wed., 18 Mar. 0.0305 0.0263 0.0287
17:01-18:00, Wed., 18 Mar. 0.0310 0.0272 0.0289
16:01-17:00, Wed., 18 Mar. 0.0315 0.0267 0.0288
15:01-16:00, Wed., 18 Mar. 0.0302 0.0263 0.0285
14:01-15:00, Wed., 18 Mar. 0.0303 0.0260 0.0286
13:01-14:00, Wed., 18 Mar. 0.0306 0.0264 0.0288
12:01-13:00, Wed., 18 Mar. 0.0308 0.0265 0.0286
11:01-12:00, Wed., 18 Mar. 0.0314 0.0270 0.0290
10:01-11:00, Wed., 18 Mar. 0.0311 0.0273 0.0292
09:01-10:00, Wed., 18 Mar. 0.0314 0.0266 0.0289
08:01-09:00, Wed., 18 Mar. 0.0316 0.0273 0.0293
07:01-08:00, Wed., 18 Mar. 0.0307 0.0274 0.0294
06:01-07:00, Wed., 18 Mar. 0.0312 0.0273 0.0292
05:01-06:00, Wed., 18 Mar. 0.0310 0.0266 0.0291
04:01-05:00, Wed., 18 Mar. 0.0316 0.0276 0.0292
03:01-04:00, Wed., 18 Mar. 0.0315 0.0268 0.0291
02:01-03:00, Wed., 18 Mar. 0.0318 0.0257 0.0293
01:01-02:00, Wed., 18 Mar. 0.0308 0.0273 0.0289
00:01-01:00, Wed., 18 Mar. 0.0311 0.0269 0.0289
23:01-24:00, Tue., 17 Mar. 0.0308 0.0261 0.0287
22:01-23:00, Tue., 17 Mar. 0.0307 0.0259 0.0286
21:01-22:00, Tue., 17 Mar. 0.0301 0.0270 0.0288
20:01-21:00, Tue., 17 Mar. 0.0319 0.0267 0.0289
19:01-20:00, Tue., 17 Mar. 0.0312 0.0259 0.0287
18:01-19:00, Tue., 17 Mar. 0.0313 0.0263 0.0282
17:01-18:00, Tue., 17 Mar. 0.0308 0.0263 0.0282
16:01-17:00, Tue., 17 Mar. 0.0314 0.0269 0.0289
15:01-16:00, Tue., 17 Mar. 0.0308 0.0262 0.0287
14:01-15:00, Tue., 17 Mar. 0.0311 0.0270 0.0289
13:01-14:00, Tue., 17 Mar. 0.0310 0.0266 0.0289
12:01-13:00, Tue., 17 Mar. 0.0306 0.0270 0.0288
11:01-12:00, Tue., 17 Mar. 0.0304 0.0260 0.0284
10:01-11:00, Tue., 17 Mar. 0.0311 0.0263 0.0287
09:01-10:00, Tue., 17 Mar. 0.0312 0.0271 0.0290
08:01-09:00, Tue., 17 Mar. 0.0309 0.0269 0.0289
07:01-08:00, Tue., 17 Mar. 0.0308 0.0270 0.0287
06:01-07:00, Tue., 17 Mar. 0.0310 0.0269 0.0290
05:01-06:00, Tue., 17 Mar. 0.0317 0.0273 0.0293
04:01-05:00, Tue., 17 Mar. 0.0318 0.0272 0.0291
03:01-04:00, Tue., 17 Mar. 0.0322 0.0267 0.0291
02:01-03:00, Tue., 17 Mar. 0.0316 0.0271 0.0290
01:01-02:00, Tue., 17 Mar. 0.0309 0.0270 0.0290
00:01-01:00, Tue., 17 Mar. 0.0306 0.0272 0.0288
23:01-24:00, Mon., 16 Mar. 0.0306 0.0270 0.0289
22:01-23:00, Mon., 16 Mar. 0.0314 0.0272 0.0287
21:01-22:00, Mon., 16 Mar. 0.0308 0.0265 0.0288
20:01-21:00, Mon., 16 Mar. 0.0311 0.0266 0.0286
19:01-20:00, Mon., 16 Mar. 0.0304 0.0267 0.0286
18:01-19:00, Mon., 16 Mar. 0.0307 0.0266 0.0285
17:01-18:00, Mon., 16 Mar. 0.0313 0.0266 0.0286
16:01-17:00, Mon., 16 Mar. 0.0310 0.0259 0.0288
15:01-16:00, Mon., 16 Mar. 0.0308 0.0273 0.0288
14:01-15:00, Mon., 16 Mar. 0.0311 0.0271 0.0288
13:01-14:00, Mon., 16 Mar. 0.0307 0.0265 0.0288
12:01-13:00, Mon., 16 Mar. 0.0314 0.0265 0.0287
11:01-12:00, Mon., 16 Mar. 0.0315 0.0270 0.0287
10:01-11:00, Mon., 16 Mar. 0.0304 0.0270 0.0289
09:01-10:00, Mon., 16 Mar. 0.0324 0.0270 0.0290
08:01-09:00, Mon., 16 Mar. 0.0318 0.0272 0.0295
07:01-08:00, Mon., 16 Mar. 0.0311 0.0269 0.0291
06:01-07:00, Mon., 16 Mar. 0.0316 0.0275 0.0293
05:01-06:00, Mon., 16 Mar. 0.0326 0.0275 0.0295
04:01-05:00, Mon., 16 Mar. 0.0329 0.0289 0.0310
03:01-04:00, Mon., 16 Mar. 0.0323 0.0270 0.0298
02:01-03:00, Mon., 16 Mar. 0.0318 0.0270 0.0289
01:01-02:00, Mon., 16 Mar. 0.0310 0.0259 0.0288
00:01-01:00, Mon., 16 Mar. 0.0310 0.0267 0.0285
23:01-24:00, Sun., 15 Mar. 0.0304 0.0259 0.0285
22:01-23:00, Sun., 15 Mar. 0.0310 0.0267 0.0285
21:01-22:00, Sun., 15 Mar. 0.0305 0.0266 0.0284
20:01-21:00, Sun., 15 Mar. 0.0297 0.0266 0.0285
19:01-20:00, Sun., 15 Mar. 0.0304 0.0260 0.0283
18:01-19:00, Sun., 15 Mar. 0.0301 0.0259 0.0282
17:01-18:00, Sun., 15 Mar. 0.0305 0.0264 0.0284
16:01-17:00, Sun., 15 Mar. 0.0302 0.0267 0.0287
15:01-16:00, Sun., 15 Mar. 0.0311 0.0267 0.0288
14:01-15:00, Sun., 15 Mar. 0.0315 0.0259 0.0289
13:01-14:00, Sun., 15 Mar. 0.0309 0.0263 0.0287
12:01-13:00, Sun., 15 Mar. 0.0313 0.0271 0.0288
11:01-12:00, Sun., 15 Mar. 0.0310 0.0266 0.0288
10:01-11:00, Sun., 15 Mar. 0.0304 0.0266 0.0287
09:01-10:00, Sun., 15 Mar. 0.0310 0.0266 0.0285
08:01-09:00, Sun., 15 Mar. 0.0317 0.0270 0.0289
07:01-08:00, Sun., 15 Mar. 0.0311 0.0266 0.0286
06:01-07:00, Sun., 15 Mar. 0.0311 0.0267 0.0288
05:01-06:00, Sun., 15 Mar. 0.0307 0.0269 0.0288
04:01-05:00, Sun., 15 Mar. 0.0314 0.0262 0.0285
03:01-04:00, Sun., 15 Mar. 0.0306 0.0270 0.0284
02:01-03:00, Sun., 15 Mar. 0.0316 0.0265 0.0286
01:01-02:00, Sun., 15 Mar. 0.0302 0.0270 0.0286
00:01-01:00, Sun., 15 Mar. 0.0301 0.0263 0.0286
23:01-24:00, Sat., 14 Mar. 0.0309 0.0261 0.0283
22:01-23:00, Sat., 14 Mar. 0.0303 0.0267 0.0284
21:01-22:00, Sat., 14 Mar. 0.0300 0.0264 0.0282
20:01-21:00, Sat., 14 Mar. 0.0312 0.0269 0.0284
19:01-20:00, Sat., 14 Mar. 0.0304 0.0259 0.0283
18:01-19:00, Sat., 14 Mar. 0.0301 0.0258 0.0282
17:01-18:00, Sat., 14 Mar. 0.0301 0.0263 0.0283
16:01-17:00, Sat., 14 Mar. 0.0301 0.0266 0.0285
15:01-16:00, Sat., 14 Mar. 0.0308 0.0263 0.0284
14:01-15:00, Sat., 14 Mar. 0.0311 0.0259 0.0283
13:01-14:00, Sat., 14 Mar. 0.0310 0.0262 0.0287
12:01-13:00, Sat., 14 Mar. 0.0304 0.0273 0.0288
11:01-12:00, Sat., 14 Mar. 0.0309 0.0266 0.0287
10:01-11:00, Sat., 14 Mar. 0.0308 0.0264 0.0287
09:01-10:00, Sat., 14 Mar. 0.0314 0.0263 0.0288
08:01-09:00, Sat., 14 Mar. 0.0308 0.0261 0.0285
07:01-08:00, Sat., 14 Mar. 0.0304 0.0268 0.0284
06:01-07:00, Sat., 14 Mar. 0.0308 0.0259 0.0283
05:01-06:00, Sat., 14 Mar. 0.0301 0.0268 0.0286
04:01-05:00, Sat., 14 Mar. 0.0308 0.0264 0.0288
03:01-04:00, Sat., 14 Mar. 0.0317 0.0270 0.0288
02:01-03:00, Sat., 14 Mar. 0.0305 0.0272 0.0289
01:01-02:00, Sat., 14 Mar. 0.0313 0.0270 0.0288
00:01-01:00, Sat., 14 Mar. 0.0311 0.0265 0.0288
23:01-24:00, Fri., 13 Mar. 0.0313 0.0270 0.0289
22:01-23:00, Fri., 13 Mar. 0.0318 0.0267 0.0288
21:01-22:00, Fri., 13 Mar. 0.0308 0.0270 0.0287
20:01-21:00, Fri., 13 Mar. 0.0311 0.0263 0.0287
19:01-20:00, Fri., 13 Mar. 0.0315 0.0268 0.0287
18:01-19:00, Fri., 13 Mar. 0.0305 0.0270 0.0284
17:01-18:00, Fri., 13 Mar. 0.0307 0.0262 0.0284
16:01-17:00, Fri., 13 Mar. 0.0306 0.0259 0.0286
15:01-16:00, Fri., 13 Mar. 0.0308 0.0256 0.0286
14:01-15:00, Fri., 13 Mar. 0.0311 0.0263 0.0287
13:01-14:00, Fri., 13 Mar. 0.0307 0.0266 0.0290
12:01-13:00, Fri., 13 Mar. 0.0318 0.0271 0.0288
11:01-12:00, Fri., 13 Mar. 0.0311 0.0269 0.0290
10:01-11:00, Fri., 13 Mar. 0.0308 0.0265 0.0291
09:01-10:00, Fri., 13 Mar. 0.0308 0.0269 0.0286
08:01-09:00, Fri., 13 Mar. 0.0308 0.0258 0.0288
07:01-08:00, Fri., 13 Mar. 0.0315 0.0261 0.0289
06:01-07:00, Fri., 13 Mar. 0.0308 0.0267 0.0289
05:01-06:00, Fri., 13 Mar. 0.0310 0.0274 0.0289
04:01-05:00, Fri., 13 Mar. 0.0311 0.0267 0.0288
03:01-04:00, Fri., 13 Mar. 0.0308 0.0263 0.0289
02:01-03:00, Fri., 13 Mar. 0.0318 0.0265 0.0288
01:01-02:00, Fri., 13 Mar. 0.0316 0.0269 0.0288
00:01-01:00, Fri., 13 Mar. 0.0308 0.0265 0.0289
23:01-24:00, Thu., 12 Mar. 0.0308 0.0276 0.0291
22:01-23:00, Thu., 12 Mar. 0.0322 0.0264 0.0288
21:01-22:00, Thu., 12 Mar. 0.0313 0.0265 0.0290