Measurement results by the hour (Chofu) 24 Dec., 2018 - 30 Dec., 2018

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., 30 Dec. 0.0307 0.0266 0.0287
22:01-23:00, Sun., 30 Dec. 0.0305 0.0265 0.0285
21:01-22:00, Sun., 30 Dec. 0.0311 0.0265 0.0286
20:01-21:00, Sun., 30 Dec. 0.0304 0.0262 0.0285
19:01-20:00, Sun., 30 Dec. 0.0307 0.0266 0.0284
18:01-19:00, Sun., 30 Dec. 0.0308 0.0266 0.0286
17:01-18:00, Sun., 30 Dec. 0.0306 0.0266 0.0286
16:01-17:00, Sun., 30 Dec. 0.0304 0.0269 0.0286
15:01-16:00, Sun., 30 Dec. 0.0307 0.0269 0.0286
14:01-15:00, Sun., 30 Dec. 0.0301 0.0265 0.0285
13:01-14:00, Sun., 30 Dec. 0.0300 0.0268 0.0287
12:01-13:00, Sun., 30 Dec. 0.0315 0.0274 0.0291
11:01-12:00, Sun., 30 Dec. 0.0314 0.0269 0.0291
10:01-11:00, Sun., 30 Dec. 0.0306 0.0272 0.0292
09:01-10:00, Sun., 30 Dec. 0.0313 0.0274 0.0295
08:01-09:00, Sun., 30 Dec. 0.0329 0.0276 0.0296
07:01-08:00, Sun., 30 Dec. 0.0321 0.0265 0.0296
06:01-07:00, Sun., 30 Dec. 0.0305 0.0270 0.0289
05:01-06:00, Sun., 30 Dec. 0.0301 0.0273 0.0289
04:01-05:00, Sun., 30 Dec. 0.0312 0.0272 0.0290
03:01-04:00, Sun., 30 Dec. 0.0307 0.0274 0.0290
02:01-03:00, Sun., 30 Dec. 0.0304 0.0271 0.0288
01:01-02:00, Sun., 30 Dec. 0.0301 0.0269 0.0288
00:01-01:00, Sun., 30 Dec. 0.0309 0.0269 0.0287
23:01-24:00, Sat., 29 Dec. 0.0310 0.0272 0.0288
22:01-23:00, Sat., 29 Dec. 0.0311 0.0270 0.0288
21:01-22:00, Sat., 29 Dec. 0.0308 0.0266 0.0287
20:01-21:00, Sat., 29 Dec. 0.0311 0.0269 0.0289
19:01-20:00, Sat., 29 Dec. 0.0308 0.0272 0.0288
18:01-19:00, Sat., 29 Dec. 0.0307 0.0268 0.0286
17:01-18:00, Sat., 29 Dec. 0.0304 0.0268 0.0287
16:01-17:00, Sat., 29 Dec. 0.0303 0.0267 0.0286
15:01-16:00, Sat., 29 Dec. 0.0318 0.0274 0.0289
14:01-15:00, Sat., 29 Dec. 0.0303 0.0268 0.0285
13:01-14:00, Sat., 29 Dec. 0.0304 0.0258 0.0285
12:01-13:00, Sat., 29 Dec. 0.0299 0.0266 0.0282
11:01-12:00, Sat., 29 Dec. 0.0301 0.0262 0.0284
10:01-11:00, Sat., 29 Dec. 0.0318 0.0269 0.0293
09:01-10:00, Sat., 29 Dec. 0.0326 0.0277 0.0298
08:01-09:00, Sat., 29 Dec. 0.0321 0.0281 0.0305
07:01-08:00, Sat., 29 Dec. 0.0318 0.0278 0.0299
06:01-07:00, Sat., 29 Dec. 0.0316 0.0280 0.0301
05:01-06:00, Sat., 29 Dec. 0.0319 0.0277 0.0299
04:01-05:00, Sat., 29 Dec. 0.0310 0.0267 0.0291
03:01-04:00, Sat., 29 Dec. 0.0316 0.0266 0.0291
02:01-03:00, Sat., 29 Dec. 0.0314 0.0279 0.0293
01:01-02:00, Sat., 29 Dec. 0.0311 0.0266 0.0289
00:01-01:00, Sat., 29 Dec. 0.0310 0.0268 0.0288
23:01-24:00, Fri., 28 Dec. 0.0319 0.0266 0.0289
22:01-23:00, Fri., 28 Dec. 0.0311 0.0262 0.0286
21:01-22:00, Fri., 28 Dec. 0.0304 0.0262 0.0283
20:01-21:00, Fri., 28 Dec. 0.0308 0.0268 0.0287
19:01-20:00, Fri., 28 Dec. 0.0305 0.0264 0.0285
18:01-19:00, Fri., 28 Dec. 0.0304 0.0273 0.0289
17:01-18:00, Fri., 28 Dec. 0.0308 0.0263 0.0288
16:01-17:00, Fri., 28 Dec. 0.0313 0.0269 0.0289
15:01-16:00, Fri., 28 Dec. 0.0317 0.0258 0.0291
14:01-15:00, Fri., 28 Dec. 0.0313 0.0274 0.0289
13:01-14:00, Fri., 28 Dec. 0.0306 0.0264 0.0292
12:01-13:00, Fri., 28 Dec. 0.0311 0.0251 0.0289
11:01-12:00, Fri., 28 Dec. 0.0312 0.0273 0.0290
10:01-11:00, Fri., 28 Dec. 0.0308 0.0265 0.0290
09:01-10:00, Fri., 28 Dec. 0.0309 0.0270 0.0288
08:01-09:00, Fri., 28 Dec. 0.0308 0.0275 0.0288
07:01-08:00, Fri., 28 Dec. 0.0308 0.0269 0.0288
06:01-07:00, Fri., 28 Dec. 0.0318 0.0265 0.0287
05:01-06:00, Fri., 28 Dec. 0.0302 0.0269 0.0288
04:01-05:00, Fri., 28 Dec. 0.0318 0.0272 0.0290
03:01-04:00, Fri., 28 Dec. 0.0314 0.0271 0.0293
02:01-03:00, Fri., 28 Dec. 0.0322 0.0270 0.0292
01:01-02:00, Fri., 28 Dec. 0.0311 0.0267 0.0290
00:01-01:00, Fri., 28 Dec. 0.0311 0.0272 0.0289
23:01-24:00, Thu., 27 Dec. 0.0319 0.0269 0.0292
22:01-23:00, Thu., 27 Dec. 0.0313 0.0265 0.0287
21:01-22:00, Thu., 27 Dec. 0.0310 0.0263 0.0288
20:01-21:00, Thu., 27 Dec. 0.0303 0.0264 0.0288
19:01-20:00, Thu., 27 Dec. 0.0306 0.0271 0.0286
18:01-19:00, Thu., 27 Dec. 0.0308 0.0268 0.0291
17:01-18:00, Thu., 27 Dec. 0.0314 0.0262 0.0284
16:01-17:00, Thu., 27 Dec. 0.0303 0.0270 0.0286
15:01-16:00, Thu., 27 Dec. 0.0311 0.0274 0.0287
14:01-15:00, Thu., 27 Dec. 0.0311 0.0271 0.0289
13:01-14:00, Thu., 27 Dec. 0.0325 0.0269 0.0291
12:01-13:00, Thu., 27 Dec. 0.0324 0.0271 0.0291
11:01-12:00, Thu., 27 Dec. 0.0310 0.0271 0.0295
10:01-11:00, Thu., 27 Dec. 0.0325 0.0278 0.0301
09:01-10:00, Thu., 27 Dec. 0.0314 0.0278 0.0298
08:01-09:00, Thu., 27 Dec. 0.0319 0.0285 0.0303
07:01-08:00, Thu., 27 Dec. 0.0330 0.0289 0.0314
06:01-07:00, Thu., 27 Dec. 0.0342 0.0301 0.0320
05:01-06:00, Thu., 27 Dec. 0.0340 0.0310 0.0326
04:01-05:00, Thu., 27 Dec. 0.0342 0.0304 0.0321
03:01-04:00, Thu., 27 Dec. 0.0337 0.0301 0.0317
02:01-03:00, Thu., 27 Dec. 0.0341 0.0297 0.0317
01:01-02:00, Thu., 27 Dec. 0.0334 0.0291 0.0314
00:01-01:00, Thu., 27 Dec. 0.0337 0.0271 0.0309
23:01-24:00, Wed., 26 Dec. 0.0332 0.0289 0.0308
22:01-23:00, Wed., 26 Dec. 0.0327 0.0289 0.0308
21:01-22:00, Wed., 26 Dec. 0.0325 0.0288 0.0305
20:01-21:00, Wed., 26 Dec. 0.0331 0.0286 0.0304
19:01-20:00, Wed., 26 Dec. 0.0323 0.0281 0.0298
18:01-19:00, Wed., 26 Dec. 0.0316 0.0280 0.0299
17:01-18:00, Wed., 26 Dec. 0.0323 0.0272 0.0300
16:01-17:00, Wed., 26 Dec. 0.0311 0.0281 0.0298
15:01-16:00, Wed., 26 Dec. 0.0319 0.0280 0.0301
14:01-15:00, Wed., 26 Dec. 0.0324 0.0283 0.0300
13:01-14:00, Wed., 26 Dec. 0.0330 0.0286 0.0304
12:01-13:00, Wed., 26 Dec. 0.0326 0.0285 0.0307
11:01-12:00, Wed., 26 Dec. 0.0324 0.0279 0.0308
10:01-11:00, Wed., 26 Dec. 0.0333 0.0295 0.0312
09:01-10:00, Wed., 26 Dec. 0.0339 0.0286 0.0312
08:01-09:00, Wed., 26 Dec. 0.0344 0.0297 0.0317
07:01-08:00, Wed., 26 Dec. 0.0334 0.0297 0.0314
06:01-07:00, Wed., 26 Dec. 0.0338 0.0291 0.0318
05:01-06:00, Wed., 26 Dec. 0.0334 0.0297 0.0318
04:01-05:00, Wed., 26 Dec. 0.0338 0.0297 0.0322
03:01-04:00, Wed., 26 Dec. 0.0341 0.0292 0.0318
02:01-03:00, Wed., 26 Dec. 0.0335 0.0289 0.0309
01:01-02:00, Wed., 26 Dec. 0.0320 0.0275 0.0297
00:01-01:00, Wed., 26 Dec. 0.0318 0.0277 0.0299
23:01-24:00, Tue., 25 Dec. 0.0333 0.0282 0.0305
22:01-23:00, Tue., 25 Dec. 0.0321 0.0278 0.0302
21:01-22:00, Tue., 25 Dec. 0.0320 0.0275 0.0300
20:01-21:00, Tue., 25 Dec. 0.0315 0.0281 0.0296
19:01-20:00, Tue., 25 Dec. 0.0304 0.0274 0.0288
18:01-19:00, Tue., 25 Dec. 0.0304 0.0264 0.0286
17:01-18:00, Tue., 25 Dec. 0.0312 0.0263 0.0283
16:01-17:00, Tue., 25 Dec. 0.0298 0.0265 0.0282
15:01-16:00, Tue., 25 Dec. 0.0308 0.0255 0.0283
14:01-15:00, Tue., 25 Dec. 0.0306 0.0268 0.0285
13:01-14:00, Tue., 25 Dec. 0.0308 0.0270 0.0286
12:01-13:00, Tue., 25 Dec. 0.0312 0.0269 0.0286
11:01-12:00, Tue., 25 Dec. 0.0300 0.0270 0.0286
10:01-11:00, Tue., 25 Dec. 0.0308 0.0266 0.0287
09:01-10:00, Tue., 25 Dec. 0.0312 0.0270 0.0291
08:01-09:00, Tue., 25 Dec. 0.0307 0.0267 0.0287
07:01-08:00, Tue., 25 Dec. 0.0304 0.0269 0.0285
06:01-07:00, Tue., 25 Dec. 0.0314 0.0267 0.0287
05:01-06:00, Tue., 25 Dec. 0.0302 0.0271 0.0287
04:01-05:00, Tue., 25 Dec. 0.0308 0.0270 0.0286
03:01-04:00, Tue., 25 Dec. 0.0307 0.0266 0.0284
02:01-03:00, Tue., 25 Dec. 0.0306 0.0269 0.0283
01:01-02:00, Tue., 25 Dec. 0.0307 0.0266 0.0284
00:01-01:00, Tue., 25 Dec. 0.0297 0.0260 0.0282
23:01-24:00, Mon., 24 Dec. 0.0301 0.0264 0.0284
22:01-23:00, Mon., 24 Dec. 0.0307 0.0263 0.0282
21:01-22:00, Mon., 24 Dec. 0.0305 0.0262 0.0283
20:01-21:00, Mon., 24 Dec. 0.0303 0.0254 0.0281
19:01-20:00, Mon., 24 Dec. 0.0298 0.0263 0.0281
18:01-19:00, Mon., 24 Dec. 0.0298 0.0264 0.0280
17:01-18:00, Mon., 24 Dec. 0.0299 0.0263 0.0280
16:01-17:00, Mon., 24 Dec. 0.0301 0.0258 0.0278
15:01-16:00, Mon., 24 Dec. 0.0301 0.0265 0.0283
14:01-15:00, Mon., 24 Dec. 0.0300 0.0265 0.0284
13:01-14:00, Mon., 24 Dec. 0.0310 0.0262 0.0285
12:01-13:00, Mon., 24 Dec. 0.0312 0.0270 0.0288
11:01-12:00, Mon., 24 Dec. 0.0315 0.0268 0.0290
10:01-11:00, Mon., 24 Dec. 0.0315 0.0275 0.0288
09:01-10:00, Mon., 24 Dec. 0.0308 0.0274 0.0290
08:01-09:00, Mon., 24 Dec. 0.0315 0.0274 0.0294
07:01-08:00, Mon., 24 Dec. 0.0307 0.0266 0.0293
06:01-07:00, Mon., 24 Dec. 0.0316 0.0276 0.0293
05:01-06:00, Mon., 24 Dec. 0.0319 0.0281 0.0302
04:01-05:00, Mon., 24 Dec. 0.0319 0.0277 0.0297
03:01-04:00, Mon., 24 Dec. 0.0312 0.0273 0.0292
02:01-03:00, Mon., 24 Dec. 0.0314 0.0271 0.0292
01:01-02:00, Mon., 24 Dec. 0.0316 0.0277 0.0295
00:01-01:00, Mon., 24 Dec. 0.0323 0.0278 0.0299