Measurement results by the hour (Chofu) 23 Jun., 2025 - 29 Jun., 2025

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
23:01-24:00, Sun., 29 Jun. 0.0304 0.0260 0.0281
22:01-23:00, Sun., 29 Jun. 0.0310 0.0256 0.0280
21:01-22:00, Sun., 29 Jun. 0.0311 0.0260 0.0278
20:01-21:00, Sun., 29 Jun. 0.0298 0.0256 0.0278
19:01-20:00, Sun., 29 Jun. 0.0301 0.0259 0.0280
18:01-19:00, Sun., 29 Jun. 0.0310 0.0251 0.0279
17:01-18:00, Sun., 29 Jun. 0.0300 0.0250 0.0277
16:01-17:00, Sun., 29 Jun. 0.0301 0.0252 0.0279
15:01-16:00, Sun., 29 Jun. 0.0306 0.0254 0.0280
14:01-15:00, Sun., 29 Jun. 0.0298 0.0253 0.0280
13:01-14:00, Sun., 29 Jun. 0.0301 0.0256 0.0280
12:01-13:00, Sun., 29 Jun. 0.0306 0.0266 0.0282
11:01-12:00, Sun., 29 Jun. 0.0306 0.0263 0.0284
10:01-11:00, Sun., 29 Jun. 0.0310 0.0269 0.0287
09:01-10:00, Sun., 29 Jun. 0.0311 0.0265 0.0287
08:01-09:00, Sun., 29 Jun. 0.0307 0.0261 0.0284
07:01-08:00, Sun., 29 Jun. 0.0311 0.0264 0.0287
06:01-07:00, Sun., 29 Jun. 0.0308 0.0269 0.0292
05:01-06:00, Sun., 29 Jun. 0.0308 0.0265 0.0285
04:01-05:00, Sun., 29 Jun. 0.0308 0.0250 0.0283
03:01-04:00, Sun., 29 Jun. 0.0295 0.0256 0.0277
02:01-03:00, Sun., 29 Jun. 0.0298 0.0255 0.0277
01:01-02:00, Sun., 29 Jun. 0.0298 0.0252 0.0278
00:01-01:00, Sun., 29 Jun. 0.0302 0.0259 0.0280
23:01-24:00, Sat., 28 Jun. 0.0304 0.0258 0.0280
22:01-23:00, Sat., 28 Jun. 0.0301 0.0259 0.0279
21:01-22:00, Sat., 28 Jun. 0.0298 0.0261 0.0279
20:01-21:00, Sat., 28 Jun. 0.0301 0.0250 0.0279
19:01-20:00, Sat., 28 Jun. 0.0301 0.0252 0.0279
18:01-19:00, Sat., 28 Jun. 0.0298 0.0262 0.0276
17:01-18:00, Sat., 28 Jun. 0.0300 0.0257 0.0278
16:01-17:00, Sat., 28 Jun. 0.0301 0.0261 0.0280
15:01-16:00, Sat., 28 Jun. 0.0304 0.0252 0.0280
14:01-15:00, Sat., 28 Jun. 0.0301 0.0261 0.0278
13:01-14:00, Sat., 28 Jun. 0.0301 0.0263 0.0281
12:01-13:00, Sat., 28 Jun. 0.0309 0.0256 0.0278
11:01-12:00, Sat., 28 Jun. 0.0299 0.0259 0.0278
10:01-11:00, Sat., 28 Jun. 0.0304 0.0256 0.0278
09:01-10:00, Sat., 28 Jun. 0.0297 0.0263 0.0281
08:01-09:00, Sat., 28 Jun. 0.0301 0.0263 0.0283
07:01-08:00, Sat., 28 Jun. 0.0309 0.0267 0.0291
06:01-07:00, Sat., 28 Jun. 0.0314 0.0273 0.0292
05:01-06:00, Sat., 28 Jun. 0.0303 0.0264 0.0282
04:01-05:00, Sat., 28 Jun. 0.0308 0.0256 0.0278
03:01-04:00, Sat., 28 Jun. 0.0304 0.0264 0.0279
02:01-03:00, Sat., 28 Jun. 0.0297 0.0257 0.0282
01:01-02:00, Sat., 28 Jun. 0.0303 0.0260 0.0282
00:01-01:00, Sat., 28 Jun. 0.0302 0.0262 0.0280
23:01-24:00, Fri., 27 Jun. 0.0293 0.0257 0.0273
22:01-23:00, Fri., 27 Jun. 0.0298 0.0254 0.0275
21:01-22:00, Fri., 27 Jun. 0.0302 0.0255 0.0278
20:01-21:00, Fri., 27 Jun. 0.0313 0.0261 0.0282
19:01-20:00, Fri., 27 Jun. 0.0310 0.0260 0.0277
18:01-19:00, Fri., 27 Jun. 0.0294 0.0253 0.0275
17:01-18:00, Fri., 27 Jun. 0.0294 0.0256 0.0278
16:01-17:00, Fri., 27 Jun. 0.0301 0.0252 0.0277
15:01-16:00, Fri., 27 Jun. 0.0300 0.0257 0.0277
14:01-15:00, Fri., 27 Jun. 0.0297 0.0263 0.0280
13:01-14:00, Fri., 27 Jun. 0.0302 0.0256 0.0278
12:01-13:00, Fri., 27 Jun. 0.0300 0.0256 0.0281
11:01-12:00, Fri., 27 Jun. 0.0301 0.0262 0.0279
10:01-11:00, Fri., 27 Jun. 0.0321 0.0265 0.0281
09:01-10:00, Fri., 27 Jun. 0.0305 0.0264 0.0282
08:01-09:00, Fri., 27 Jun. 0.0302 0.0263 0.0284
07:01-08:00, Fri., 27 Jun. 0.0299 0.0263 0.0284
06:01-07:00, Fri., 27 Jun. 0.0301 0.0260 0.0283
05:01-06:00, Fri., 27 Jun. 0.0301 0.0258 0.0278
04:01-05:00, Fri., 27 Jun. 0.0296 0.0250 0.0274
03:01-04:00, Fri., 27 Jun. 0.0297 0.0257 0.0275
02:01-03:00, Fri., 27 Jun. 0.0294 0.0249 0.0274
01:01-02:00, Fri., 27 Jun. 0.0297 0.0259 0.0275
00:01-01:00, Fri., 27 Jun. 0.0300 0.0258 0.0278
23:01-24:00, Thu., 26 Jun. 0.0344 0.0272 0.0305
22:01-23:00, Thu., 26 Jun. 0.0375 0.0310 0.0343
21:01-22:00, Thu., 26 Jun. 0.0383 0.0297 0.0333
20:01-21:00, Thu., 26 Jun. 0.0392 0.0319 0.0356
19:01-20:00, Thu., 26 Jun. 0.0356 0.0303 0.0333
18:01-19:00, Thu., 26 Jun. 0.0322 0.0259 0.0294
17:01-18:00, Thu., 26 Jun. 0.0307 0.0243 0.0274
16:01-17:00, Thu., 26 Jun. 0.0287 0.0245 0.0268
15:01-16:00, Thu., 26 Jun. 0.0291 0.0249 0.0268
14:01-15:00, Thu., 26 Jun. 0.0296 0.0244 0.0268
13:01-14:00, Thu., 26 Jun. 0.0286 0.0244 0.0268
12:01-13:00, Thu., 26 Jun. 0.0289 0.0251 0.0270
11:01-12:00, Thu., 26 Jun. 0.0295 0.0249 0.0271
10:01-11:00, Thu., 26 Jun. 0.0287 0.0246 0.0266
09:01-10:00, Thu., 26 Jun. 0.0285 0.0248 0.0266
08:01-09:00, Thu., 26 Jun. 0.0287 0.0244 0.0265
07:01-08:00, Thu., 26 Jun. 0.0288 0.0246 0.0268
06:01-07:00, Thu., 26 Jun. 0.0294 0.0251 0.0271
05:01-06:00, Thu., 26 Jun. 0.0288 0.0247 0.0269
04:01-05:00, Thu., 26 Jun. 0.0290 0.0247 0.0268
03:01-04:00, Thu., 26 Jun. 0.0291 0.0249 0.0266
02:01-03:00, Thu., 26 Jun. 0.0287 0.0255 0.0268
01:01-02:00, Thu., 26 Jun. 0.0288 0.0243 0.0266
00:01-01:00, Thu., 26 Jun. 0.0283 0.0238 0.0264
23:01-24:00, Wed., 25 Jun. 0.0289 0.0248 0.0265
22:01-23:00, Wed., 25 Jun. 0.0287 0.0236 0.0264
21:01-22:00, Wed., 25 Jun. 0.0289 0.0242 0.0267
20:01-21:00, Wed., 25 Jun. 0.0280 0.0238 0.0264
19:01-20:00, Wed., 25 Jun. 0.0279 0.0245 0.0262
18:01-19:00, Wed., 25 Jun. 0.0284 0.0238 0.0261
17:01-18:00, Wed., 25 Jun. 0.0276 0.0241 0.0262
16:01-17:00, Wed., 25 Jun. 0.0287 0.0246 0.0264
15:01-16:00, Wed., 25 Jun. 0.0292 0.0250 0.0265
14:01-15:00, Wed., 25 Jun. 0.0290 0.0235 0.0264
13:01-14:00, Wed., 25 Jun. 0.0295 0.0252 0.0272
12:01-13:00, Wed., 25 Jun. 0.0304 0.0252 0.0274
11:01-12:00, Wed., 25 Jun. 0.0315 0.0266 0.0290
10:01-11:00, Wed., 25 Jun. 0.0318 0.0268 0.0293
09:01-10:00, Wed., 25 Jun. 0.0306 0.0262 0.0283
08:01-09:00, Wed., 25 Jun. 0.0292 0.0255 0.0275
07:01-08:00, Wed., 25 Jun. 0.0294 0.0249 0.0273
06:01-07:00, Wed., 25 Jun. 0.0304 0.0259 0.0280
05:01-06:00, Wed., 25 Jun. 0.0297 0.0263 0.0282
04:01-05:00, Wed., 25 Jun. 0.0299 0.0268 0.0281
03:01-04:00, Wed., 25 Jun. 0.0306 0.0266 0.0282
02:01-03:00, Wed., 25 Jun. 0.0304 0.0262 0.0282
01:01-02:00, Wed., 25 Jun. 0.0306 0.0261 0.0281
00:01-01:00, Wed., 25 Jun. 0.0298 0.0264 0.0281
23:01-24:00, Tue., 24 Jun. 0.0301 0.0263 0.0280
22:01-23:00, Tue., 24 Jun. 0.0300 0.0264 0.0281
21:01-22:00, Tue., 24 Jun. 0.0301 0.0256 0.0278
20:01-21:00, Tue., 24 Jun. 0.0305 0.0260 0.0279
19:01-20:00, Tue., 24 Jun. 0.0297 0.0259 0.0278
18:01-19:00, Tue., 24 Jun. 0.0303 0.0259 0.0280
17:01-18:00, Tue., 24 Jun. 0.0308 0.0266 0.0280
16:01-17:00, Tue., 24 Jun. 0.0303 0.0256 0.0279
15:01-16:00, Tue., 24 Jun. 0.0295 0.0254 0.0279
14:01-15:00, Tue., 24 Jun. 0.0308 0.0260 0.0279
13:01-14:00, Tue., 24 Jun. 0.0297 0.0263 0.0280
12:01-13:00, Tue., 24 Jun. 0.0297 0.0263 0.0279
11:01-12:00, Tue., 24 Jun. 0.0298 0.0263 0.0280
10:01-11:00, Tue., 24 Jun. 0.0303 0.0264 0.0280
09:01-10:00, Tue., 24 Jun. 0.0304 0.0260 0.0284
08:01-09:00, Tue., 24 Jun. 0.0327 0.0276 0.0296
07:01-08:00, Tue., 24 Jun. 0.0312 0.0276 0.0299
06:01-07:00, Tue., 24 Jun. 0.0315 0.0270 0.0294
05:01-06:00, Tue., 24 Jun. 0.0308 0.0271 0.0291
04:01-05:00, Tue., 24 Jun. 0.0313 0.0269 0.0290
03:01-04:00, Tue., 24 Jun. 0.0308 0.0265 0.0286
02:01-03:00, Tue., 24 Jun. 0.0306 0.0267 0.0287
01:01-02:00, Tue., 24 Jun. 0.0309 0.0266 0.0286
00:01-01:00, Tue., 24 Jun. 0.0304 0.0263 0.0288
23:01-24:00, Mon., 23 Jun. 0.0307 0.0263 0.0282
22:01-23:00, Mon., 23 Jun. 0.0300 0.0266 0.0282
21:01-22:00, Mon., 23 Jun. 0.0294 0.0263 0.0280
20:01-21:00, Mon., 23 Jun. 0.0306 0.0264 0.0280
19:01-20:00, Mon., 23 Jun. 0.0302 0.0259 0.0281
18:01-19:00, Mon., 23 Jun. 0.0308 0.0262 0.0281
17:01-18:00, Mon., 23 Jun. 0.0304 0.0263 0.0283
16:01-17:00, Mon., 23 Jun. 0.0302 0.0262 0.0282
15:01-16:00, Mon., 23 Jun. 0.0301 0.0261 0.0282
14:01-15:00, Mon., 23 Jun. 0.0304 0.0261 0.0283
13:01-14:00, Mon., 23 Jun. 0.0301 0.0259 0.0282
12:01-13:00, Mon., 23 Jun. 0.0300 0.0262 0.0283
11:01-12:00, Mon., 23 Jun. 0.0305 0.0259 0.0281
10:01-11:00, Mon., 23 Jun. 0.0303 0.0263 0.0280
09:01-10:00, Mon., 23 Jun. 0.0298 0.0255 0.0281
08:01-09:00, Mon., 23 Jun. 0.0300 0.0264 0.0280
07:01-08:00, Mon., 23 Jun. 0.0297 0.0270 0.0282
06:01-07:00, Mon., 23 Jun. 0.0305 0.0265 0.0282
05:01-06:00, Mon., 23 Jun. 0.0306 0.0253 0.0284
04:01-05:00, Mon., 23 Jun. 0.0297 0.0255 0.0280
03:01-04:00, Mon., 23 Jun. 0.0307 0.0256 0.0280
02:01-03:00, Mon., 23 Jun. 0.0309 0.0263 0.0282
01:01-02:00, Mon., 23 Jun. 0.0298 0.0258 0.0280
00:01-01:00, Mon., 23 Jun. 0.0299 0.0263 0.0280