Measurement results by the hour (Chofu) 25 Sep., 2023 - 1 Oct., 2023

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., 01 Oct. 0.0307 0.0274 0.0292
22:01-23:00, Sun., 01 Oct. 0.0319 0.0273 0.0291
21:01-22:00, Sun., 01 Oct. 0.0306 0.0273 0.0290
20:01-21:00, Sun., 01 Oct. 0.0318 0.0273 0.0293
19:01-20:00, Sun., 01 Oct. 0.0311 0.0273 0.0289
18:01-19:00, Sun., 01 Oct. 0.0315 0.0268 0.0294
17:01-18:00, Sun., 01 Oct. 0.0322 0.0272 0.0293
16:01-17:00, Sun., 01 Oct. 0.0315 0.0273 0.0292
15:01-16:00, Sun., 01 Oct. 0.0319 0.0266 0.0295
14:01-15:00, Sun., 01 Oct. 0.0322 0.0270 0.0296
13:01-14:00, Sun., 01 Oct. 0.0311 0.0275 0.0295
12:01-13:00, Sun., 01 Oct. 0.0317 0.0272 0.0294
11:01-12:00, Sun., 01 Oct. 0.0325 0.0273 0.0298
10:01-11:00, Sun., 01 Oct. 0.0320 0.0273 0.0294
09:01-10:00, Sun., 01 Oct. 0.0315 0.0271 0.0295
08:01-09:00, Sun., 01 Oct. 0.0326 0.0279 0.0298
07:01-08:00, Sun., 01 Oct. 0.0339 0.0276 0.0301
06:01-07:00, Sun., 01 Oct. 0.0317 0.0274 0.0294
05:01-06:00, Sun., 01 Oct. 0.0316 0.0270 0.0291
04:01-05:00, Sun., 01 Oct. 0.0311 0.0260 0.0287
03:01-04:00, Sun., 01 Oct. 0.0315 0.0266 0.0294
02:01-03:00, Sun., 01 Oct. 0.0323 0.0274 0.0292
01:01-02:00, Sun., 01 Oct. 0.0306 0.0263 0.0289
00:01-01:00, Sun., 01 Oct. 0.0305 0.0263 0.0288
23:01-24:00, Sat., 30 Sep. 0.0311 0.0266 0.0287
22:01-23:00, Sat., 30 Sep. 0.0306 0.0265 0.0285
21:01-22:00, Sat., 30 Sep. 0.0301 0.0264 0.0283
20:01-21:00, Sat., 30 Sep. 0.0303 0.0263 0.0283
19:01-20:00, Sat., 30 Sep. 0.0310 0.0264 0.0285
18:01-19:00, Sat., 30 Sep. 0.0305 0.0254 0.0280
17:01-18:00, Sat., 30 Sep. 0.0308 0.0256 0.0281
16:01-17:00, Sat., 30 Sep. 0.0297 0.0253 0.0280
15:01-16:00, Sat., 30 Sep. 0.0311 0.0264 0.0281
14:01-15:00, Sat., 30 Sep. 0.0322 0.0268 0.0290
13:01-14:00, Sat., 30 Sep. 0.0325 0.0274 0.0301
12:01-13:00, Sat., 30 Sep. 0.0346 0.0295 0.0323
11:01-12:00, Sat., 30 Sep. 0.0332 0.0272 0.0293
10:01-11:00, Sat., 30 Sep. 0.0306 0.0271 0.0289
09:01-10:00, Sat., 30 Sep. 0.0301 0.0266 0.0282
08:01-09:00, Sat., 30 Sep. 0.0310 0.0261 0.0286
07:01-08:00, Sat., 30 Sep. 0.0306 0.0260 0.0286
06:01-07:00, Sat., 30 Sep. 0.0315 0.0258 0.0282
05:01-06:00, Sat., 30 Sep. 0.0305 0.0257 0.0283
04:01-05:00, Sat., 30 Sep. 0.0298 0.0262 0.0284
03:01-04:00, Sat., 30 Sep. 0.0308 0.0268 0.0285
02:01-03:00, Sat., 30 Sep. 0.0304 0.0262 0.0285
01:01-02:00, Sat., 30 Sep. 0.0311 0.0262 0.0283
00:01-01:00, Sat., 30 Sep. 0.0301 0.0266 0.0284
23:01-24:00, Fri., 29 Sep. 0.0304 0.0266 0.0283
22:01-23:00, Fri., 29 Sep. 0.0310 0.0266 0.0283
21:01-22:00, Fri., 29 Sep. 0.0304 0.0267 0.0281
20:01-21:00, Fri., 29 Sep. 0.0308 0.0266 0.0283
19:01-20:00, Fri., 29 Sep. 0.0299 0.0263 0.0282
18:01-19:00, Fri., 29 Sep. 0.0301 0.0264 0.0280
17:01-18:00, Fri., 29 Sep. 0.0298 0.0263 0.0281
16:01-17:00, Fri., 29 Sep. 0.0308 0.0263 0.0282
15:01-16:00, Fri., 29 Sep. 0.0316 0.0256 0.0283
14:01-15:00, Fri., 29 Sep. 0.0311 0.0259 0.0284
13:01-14:00, Fri., 29 Sep. 0.0311 0.0259 0.0285
12:01-13:00, Fri., 29 Sep. 0.0302 0.0266 0.0288
11:01-12:00, Fri., 29 Sep. 0.0306 0.0261 0.0284
10:01-11:00, Fri., 29 Sep. 0.0317 0.0275 0.0292
09:01-10:00, Fri., 29 Sep. 0.0312 0.0268 0.0289
08:01-09:00, Fri., 29 Sep. 0.0318 0.0263 0.0288
07:01-08:00, Fri., 29 Sep. 0.0316 0.0271 0.0294
06:01-07:00, Fri., 29 Sep. 0.0310 0.0280 0.0294
05:01-06:00, Fri., 29 Sep. 0.0316 0.0270 0.0293
04:01-05:00, Fri., 29 Sep. 0.0311 0.0269 0.0292
03:01-04:00, Fri., 29 Sep. 0.0312 0.0270 0.0290
02:01-03:00, Fri., 29 Sep. 0.0317 0.0275 0.0294
01:01-02:00, Fri., 29 Sep. 0.0311 0.0276 0.0293
00:01-01:00, Fri., 29 Sep. 0.0311 0.0271 0.0289
23:01-24:00, Thu., 28 Sep. 0.0321 0.0273 0.0291
22:01-23:00, Thu., 28 Sep. 0.0312 0.0266 0.0289
21:01-22:00, Thu., 28 Sep. 0.0310 0.0266 0.0289
20:01-21:00, Thu., 28 Sep. 0.0313 0.0264 0.0290
19:01-20:00, Thu., 28 Sep. 0.0320 0.0273 0.0291
18:01-19:00, Thu., 28 Sep. 0.0312 0.0272 0.0293
17:01-18:00, Thu., 28 Sep. 0.0315 0.0259 0.0290
16:01-17:00, Thu., 28 Sep. 0.0320 0.0269 0.0293
15:01-16:00, Thu., 28 Sep. 0.0322 0.0272 0.0294
14:01-15:00, Thu., 28 Sep. 0.0318 0.0276 0.0292
13:01-14:00, Thu., 28 Sep. 0.0319 0.0267 0.0291
12:01-13:00, Thu., 28 Sep. 0.0315 0.0263 0.0287
11:01-12:00, Thu., 28 Sep. 0.0316 0.0267 0.0288
10:01-11:00, Thu., 28 Sep. 0.0307 0.0267 0.0284
09:01-10:00, Thu., 28 Sep. 0.0307 0.0259 0.0285
08:01-09:00, Thu., 28 Sep. 0.0302 0.0259 0.0283
07:01-08:00, Thu., 28 Sep. 0.0309 0.0264 0.0287
06:01-07:00, Thu., 28 Sep. 0.0301 0.0266 0.0282
05:01-06:00, Thu., 28 Sep. 0.0304 0.0253 0.0280
04:01-05:00, Thu., 28 Sep. 0.0308 0.0251 0.0279
03:01-04:00, Thu., 28 Sep. 0.0301 0.0262 0.0280
02:01-03:00, Thu., 28 Sep. 0.0297 0.0249 0.0281
01:01-02:00, Thu., 28 Sep. 0.0304 0.0265 0.0284
00:01-01:00, Thu., 28 Sep. 0.0310 0.0260 0.0281
23:01-24:00, Wed., 27 Sep. 0.0308 0.0257 0.0281
22:01-23:00, Wed., 27 Sep. 0.0295 0.0249 0.0276
21:01-22:00, Wed., 27 Sep. 0.0304 0.0259 0.0280
20:01-21:00, Wed., 27 Sep. 0.0294 0.0261 0.0277
19:01-20:00, Wed., 27 Sep. 0.0304 0.0256 0.0281
18:01-19:00, Wed., 27 Sep. 0.0300 0.0264 0.0281
17:01-18:00, Wed., 27 Sep. 0.0297 0.0254 0.0277
16:01-17:00, Wed., 27 Sep. 0.0299 0.0262 0.0281
15:01-16:00, Wed., 27 Sep. 0.0294 0.0262 0.0279
14:01-15:00, Wed., 27 Sep. 0.0298 0.0262 0.0284
13:01-14:00, Wed., 27 Sep. 0.0309 0.0265 0.0287
12:01-13:00, Wed., 27 Sep. 0.0308 0.0258 0.0286
11:01-12:00, Wed., 27 Sep. 0.0309 0.0267 0.0286
10:01-11:00, Wed., 27 Sep. 0.0311 0.0263 0.0288
09:01-10:00, Wed., 27 Sep. 0.0310 0.0270 0.0290
08:01-09:00, Wed., 27 Sep. 0.0310 0.0270 0.0290
07:01-08:00, Wed., 27 Sep. 0.0317 0.0269 0.0295
06:01-07:00, Wed., 27 Sep. 0.0336 0.0273 0.0306
05:01-06:00, Wed., 27 Sep. 0.0323 0.0273 0.0295
04:01-05:00, Wed., 27 Sep. 0.0329 0.0272 0.0297
03:01-04:00, Wed., 27 Sep. 0.0313 0.0270 0.0293
02:01-03:00, Wed., 27 Sep. 0.0319 0.0269 0.0296
01:01-02:00, Wed., 27 Sep. 0.0307 0.0270 0.0292
00:01-01:00, Wed., 27 Sep. 0.0317 0.0266 0.0285
23:01-24:00, Tue., 26 Sep. 0.0296 0.0252 0.0275
22:01-23:00, Tue., 26 Sep. 0.0292 0.0262 0.0274
21:01-22:00, Tue., 26 Sep. 0.0304 0.0260 0.0279
20:01-21:00, Tue., 26 Sep. 0.0296 0.0254 0.0277
19:01-20:00, Tue., 26 Sep. 0.0308 0.0263 0.0279
18:01-19:00, Tue., 26 Sep. 0.0298 0.0262 0.0281
17:01-18:00, Tue., 26 Sep. 0.0298 0.0258 0.0277
16:01-17:00, Tue., 26 Sep. 0.0313 0.0262 0.0280
15:01-16:00, Tue., 26 Sep. 0.0307 0.0260 0.0283
14:01-15:00, Tue., 26 Sep. 0.0302 0.0264 0.0281
13:01-14:00, Tue., 26 Sep. 0.0298 0.0260 0.0278
12:01-13:00, Tue., 26 Sep. 0.0304 0.0261 0.0282
11:01-12:00, Tue., 26 Sep. 0.0301 0.0256 0.0281
10:01-11:00, Tue., 26 Sep. 0.0303 0.0256 0.0279
09:01-10:00, Tue., 26 Sep. 0.0298 0.0256 0.0281
08:01-09:00, Tue., 26 Sep. 0.0306 0.0259 0.0284
07:01-08:00, Tue., 26 Sep. 0.0318 0.0260 0.0289
06:01-07:00, Tue., 26 Sep. 0.0312 0.0270 0.0290
05:01-06:00, Tue., 26 Sep. 0.0311 0.0266 0.0289
04:01-05:00, Tue., 26 Sep. 0.0308 0.0268 0.0288
03:01-04:00, Tue., 26 Sep. 0.0310 0.0262 0.0287
02:01-03:00, Tue., 26 Sep. 0.0314 0.0272 0.0289
01:01-02:00, Tue., 26 Sep. 0.0311 0.0262 0.0286
00:01-01:00, Tue., 26 Sep. 0.0310 0.0259 0.0285
23:01-24:00, Mon., 25 Sep. 0.0307 0.0264 0.0283
22:01-23:00, Mon., 25 Sep. 0.0301 0.0257 0.0276
21:01-22:00, Mon., 25 Sep. 0.0298 0.0248 0.0274
20:01-21:00, Mon., 25 Sep. 0.0298 0.0256 0.0274
19:01-20:00, Mon., 25 Sep. 0.0297 0.0254 0.0273
18:01-19:00, Mon., 25 Sep. 0.0292 0.0254 0.0273
17:01-18:00, Mon., 25 Sep. 0.0297 0.0257 0.0275
16:01-17:00, Mon., 25 Sep. 0.0301 0.0261 0.0278
15:01-16:00, Mon., 25 Sep. 0.0294 0.0259 0.0277
14:01-15:00, Mon., 25 Sep. 0.0308 0.0254 0.0279
13:01-14:00, Mon., 25 Sep. 0.0307 0.0255 0.0281
12:01-13:00, Mon., 25 Sep. 0.0298 0.0257 0.0278
11:01-12:00, Mon., 25 Sep. 0.0301 0.0256 0.0282
10:01-11:00, Mon., 25 Sep. 0.0301 0.0260 0.0283
09:01-10:00, Mon., 25 Sep. 0.0304 0.0269 0.0284
08:01-09:00, Mon., 25 Sep. 0.0306 0.0259 0.0283
07:01-08:00, Mon., 25 Sep. 0.0315 0.0256 0.0286
06:01-07:00, Mon., 25 Sep. 0.0313 0.0263 0.0287
05:01-06:00, Mon., 25 Sep. 0.0304 0.0265 0.0282
04:01-05:00, Mon., 25 Sep. 0.0298 0.0256 0.0282
03:01-04:00, Mon., 25 Sep. 0.0298 0.0266 0.0281
02:01-03:00, Mon., 25 Sep. 0.0300 0.0256 0.0281
01:01-02:00, Mon., 25 Sep. 0.0303 0.0261 0.0280
00:01-01:00, Mon., 25 Sep. 0.0301 0.0252 0.0280