Measurement results by the hour (Chofu) 10 Feb., 2020 - 16 Feb., 2020

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., 16 Feb. 0.0344 0.0293 0.0314
22:01-23:00, Sun., 16 Feb. 0.0395 0.0320 0.0349
21:01-22:00, Sun., 16 Feb. 0.0378 0.0306 0.0349
20:01-21:00, Sun., 16 Feb. 0.0367 0.0306 0.0333
19:01-20:00, Sun., 16 Feb. 0.0364 0.0291 0.0325
18:01-19:00, Sun., 16 Feb. 0.0325 0.0282 0.0305
17:01-18:00, Sun., 16 Feb. 0.0332 0.0285 0.0308
16:01-17:00, Sun., 16 Feb. 0.0334 0.0293 0.0312
15:01-16:00, Sun., 16 Feb. 0.0318 0.0282 0.0298
14:01-15:00, Sun., 16 Feb. 0.0317 0.0280 0.0298
13:01-14:00, Sun., 16 Feb. 0.0328 0.0283 0.0303
12:01-13:00, Sun., 16 Feb. 0.0354 0.0290 0.0322
11:01-12:00, Sun., 16 Feb. 0.0383 0.0324 0.0359
10:01-11:00, Sun., 16 Feb. 0.0420 0.0343 0.0376
09:01-10:00, Sun., 16 Feb. 0.0380 0.0319 0.0349
08:01-09:00, Sun., 16 Feb. 0.0376 0.0317 0.0349
07:01-08:00, Sun., 16 Feb. 0.0351 0.0292 0.0320
06:01-07:00, Sun., 16 Feb. 0.0326 0.0291 0.0308
05:01-06:00, Sun., 16 Feb. 0.0329 0.0285 0.0307
04:01-05:00, Sun., 16 Feb. 0.0327 0.0288 0.0307
03:01-04:00, Sun., 16 Feb. 0.0325 0.0289 0.0305
02:01-03:00, Sun., 16 Feb. 0.0324 0.0281 0.0305
01:01-02:00, Sun., 16 Feb. 0.0319 0.0271 0.0298
00:01-01:00, Sun., 16 Feb. 0.0319 0.0280 0.0298
23:01-24:00, Sat., 15 Feb. 0.0315 0.0279 0.0297
22:01-23:00, Sat., 15 Feb. 0.0310 0.0273 0.0290
21:01-22:00, Sat., 15 Feb. 0.0305 0.0270 0.0286
20:01-21:00, Sat., 15 Feb. 0.0302 0.0265 0.0284
19:01-20:00, Sat., 15 Feb. 0.0310 0.0264 0.0281
18:01-19:00, Sat., 15 Feb. 0.0297 0.0253 0.0284
17:01-18:00, Sat., 15 Feb. 0.0301 0.0266 0.0282
16:01-17:00, Sat., 15 Feb. 0.0292 0.0265 0.0281
15:01-16:00, Sat., 15 Feb. 0.0299 0.0263 0.0280
14:01-15:00, Sat., 15 Feb. 0.0310 0.0259 0.0280
13:01-14:00, Sat., 15 Feb. 0.0299 0.0258 0.0280
12:01-13:00, Sat., 15 Feb. 0.0302 0.0265 0.0282
11:01-12:00, Sat., 15 Feb. 0.0304 0.0268 0.0286
10:01-11:00, Sat., 15 Feb. 0.0314 0.0274 0.0290
09:01-10:00, Sat., 15 Feb. 0.0311 0.0273 0.0295
08:01-09:00, Sat., 15 Feb. 0.0320 0.0283 0.0302
07:01-08:00, Sat., 15 Feb. 0.0330 0.0271 0.0304
06:01-07:00, Sat., 15 Feb. 0.0323 0.0278 0.0299
05:01-06:00, Sat., 15 Feb. 0.0313 0.0280 0.0298
04:01-05:00, Sat., 15 Feb. 0.0311 0.0280 0.0298
03:01-04:00, Sat., 15 Feb. 0.0330 0.0282 0.0302
02:01-03:00, Sat., 15 Feb. 0.0323 0.0290 0.0304
01:01-02:00, Sat., 15 Feb. 0.0330 0.0280 0.0302
00:01-01:00, Sat., 15 Feb. 0.0315 0.0279 0.0295
23:01-24:00, Fri., 14 Feb. 0.0314 0.0273 0.0293
22:01-23:00, Fri., 14 Feb. 0.0311 0.0275 0.0290
21:01-22:00, Fri., 14 Feb. 0.0303 0.0261 0.0285
20:01-21:00, Fri., 14 Feb. 0.0302 0.0267 0.0287
19:01-20:00, Fri., 14 Feb. 0.0313 0.0264 0.0292
18:01-19:00, Fri., 14 Feb. 0.0338 0.0281 0.0312
17:01-18:00, Fri., 14 Feb. 0.0379 0.0320 0.0346
16:01-17:00, Fri., 14 Feb. 0.0331 0.0262 0.0283
15:01-16:00, Fri., 14 Feb. 0.0308 0.0264 0.0286
14:01-15:00, Fri., 14 Feb. 0.0305 0.0271 0.0285
13:01-14:00, Fri., 14 Feb. 0.0314 0.0269 0.0286
12:01-13:00, Fri., 14 Feb. 0.0307 0.0263 0.0287
11:01-12:00, Fri., 14 Feb. 0.0311 0.0272 0.0291
10:01-11:00, Fri., 14 Feb. 0.0318 0.0276 0.0299
09:01-10:00, Fri., 14 Feb. 0.0312 0.0277 0.0297
08:01-09:00, Fri., 14 Feb. 0.0323 0.0288 0.0303
07:01-08:00, Fri., 14 Feb. 0.0331 0.0287 0.0306
06:01-07:00, Fri., 14 Feb. 0.0332 0.0282 0.0304
05:01-06:00, Fri., 14 Feb. 0.0323 0.0286 0.0302
04:01-05:00, Fri., 14 Feb. 0.0328 0.0278 0.0302
03:01-04:00, Fri., 14 Feb. 0.0327 0.0288 0.0301
02:01-03:00, Fri., 14 Feb. 0.0312 0.0279 0.0295
01:01-02:00, Fri., 14 Feb. 0.0319 0.0274 0.0297
00:01-01:00, Fri., 14 Feb. 0.0319 0.0276 0.0293
23:01-24:00, Thu., 13 Feb. 0.0306 0.0268 0.0283
22:01-23:00, Thu., 13 Feb. 0.0310 0.0274 0.0289
21:01-22:00, Thu., 13 Feb. 0.0310 0.0273 0.0289
20:01-21:00, Thu., 13 Feb. 0.0310 0.0272 0.0290
19:01-20:00, Thu., 13 Feb. 0.0312 0.0270 0.0288
18:01-19:00, Thu., 13 Feb. 0.0306 0.0262 0.0285
17:01-18:00, Thu., 13 Feb. 0.0305 0.0255 0.0283
16:01-17:00, Thu., 13 Feb. 0.0307 0.0251 0.0283
15:01-16:00, Thu., 13 Feb. 0.0305 0.0259 0.0284
14:01-15:00, Thu., 13 Feb. 0.0306 0.0271 0.0287
13:01-14:00, Thu., 13 Feb. 0.0311 0.0266 0.0286
12:01-13:00, Thu., 13 Feb. 0.0313 0.0274 0.0292
11:01-12:00, Thu., 13 Feb. 0.0326 0.0280 0.0297
10:01-11:00, Thu., 13 Feb. 0.0336 0.0283 0.0313
09:01-10:00, Thu., 13 Feb. 0.0360 0.0309 0.0336
08:01-09:00, Thu., 13 Feb. 0.0340 0.0286 0.0306
07:01-08:00, Thu., 13 Feb. 0.0322 0.0281 0.0302
06:01-07:00, Thu., 13 Feb. 0.0316 0.0269 0.0298
05:01-06:00, Thu., 13 Feb. 0.0311 0.0276 0.0291
04:01-05:00, Thu., 13 Feb. 0.0308 0.0275 0.0293
03:01-04:00, Thu., 13 Feb. 0.0309 0.0268 0.0291
02:01-03:00, Thu., 13 Feb. 0.0315 0.0278 0.0292
01:01-02:00, Thu., 13 Feb. 0.0316 0.0275 0.0293
00:01-01:00, Thu., 13 Feb. 0.0306 0.0271 0.0289
23:01-24:00, Wed., 12 Feb. 0.0306 0.0268 0.0288
22:01-23:00, Wed., 12 Feb. 0.0305 0.0263 0.0287
21:01-22:00, Wed., 12 Feb. 0.0308 0.0257 0.0283
20:01-21:00, Wed., 12 Feb. 0.0305 0.0261 0.0283
19:01-20:00, Wed., 12 Feb. 0.0306 0.0262 0.0284
18:01-19:00, Wed., 12 Feb. 0.0308 0.0263 0.0283
17:01-18:00, Wed., 12 Feb. 0.0311 0.0261 0.0283
16:01-17:00, Wed., 12 Feb. 0.0302 0.0262 0.0280
15:01-16:00, Wed., 12 Feb. 0.0302 0.0257 0.0280
14:01-15:00, Wed., 12 Feb. 0.0303 0.0264 0.0285
13:01-14:00, Wed., 12 Feb. 0.0318 0.0276 0.0293
12:01-13:00, Wed., 12 Feb. 0.0310 0.0275 0.0289
11:01-12:00, Wed., 12 Feb. 0.0311 0.0270 0.0291
10:01-11:00, Wed., 12 Feb. 0.0314 0.0275 0.0296
09:01-10:00, Wed., 12 Feb. 0.0316 0.0272 0.0296
08:01-09:00, Wed., 12 Feb. 0.0314 0.0270 0.0294
07:01-08:00, Wed., 12 Feb. 0.0317 0.0263 0.0299
06:01-07:00, Wed., 12 Feb. 0.0317 0.0281 0.0299
05:01-06:00, Wed., 12 Feb. 0.0318 0.0279 0.0298
04:01-05:00, Wed., 12 Feb. 0.0314 0.0275 0.0294
03:01-04:00, Wed., 12 Feb. 0.0311 0.0273 0.0292
02:01-03:00, Wed., 12 Feb. 0.0307 0.0275 0.0289
01:01-02:00, Wed., 12 Feb. 0.0303 0.0267 0.0285
00:01-01:00, Wed., 12 Feb. 0.0302 0.0268 0.0284
23:01-24:00, Tue., 11 Feb. 0.0300 0.0266 0.0283
22:01-23:00, Tue., 11 Feb. 0.0314 0.0267 0.0284
21:01-22:00, Tue., 11 Feb. 0.0301 0.0268 0.0282
20:01-21:00, Tue., 11 Feb. 0.0306 0.0264 0.0280
19:01-20:00, Tue., 11 Feb. 0.0295 0.0262 0.0280
18:01-19:00, Tue., 11 Feb. 0.0303 0.0259 0.0281
17:01-18:00, Tue., 11 Feb. 0.0297 0.0258 0.0278
16:01-17:00, Tue., 11 Feb. 0.0302 0.0260 0.0278
15:01-16:00, Tue., 11 Feb. 0.0297 0.0261 0.0278
14:01-15:00, Tue., 11 Feb. 0.0296 0.0261 0.0278
13:01-14:00, Tue., 11 Feb. 0.0300 0.0257 0.0282
12:01-13:00, Tue., 11 Feb. 0.0304 0.0266 0.0283
11:01-12:00, Tue., 11 Feb. 0.0305 0.0264 0.0285
10:01-11:00, Tue., 11 Feb. 0.0305 0.0265 0.0285
09:01-10:00, Tue., 11 Feb. 0.0321 0.0269 0.0284
08:01-09:00, Tue., 11 Feb. 0.0304 0.0270 0.0285
07:01-08:00, Tue., 11 Feb. 0.0299 0.0262 0.0282
06:01-07:00, Tue., 11 Feb. 0.0296 0.0259 0.0278
05:01-06:00, Tue., 11 Feb. 0.0300 0.0261 0.0278
04:01-05:00, Tue., 11 Feb. 0.0299 0.0265 0.0280
03:01-04:00, Tue., 11 Feb. 0.0297 0.0257 0.0279
02:01-03:00, Tue., 11 Feb. 0.0293 0.0257 0.0279
01:01-02:00, Tue., 11 Feb. 0.0306 0.0252 0.0280
00:01-01:00, Tue., 11 Feb. 0.0295 0.0263 0.0279
23:01-24:00, Mon., 10 Feb. 0.0306 0.0260 0.0280
22:01-23:00, Mon., 10 Feb. 0.0302 0.0263 0.0282
21:01-22:00, Mon., 10 Feb. 0.0311 0.0264 0.0282
20:01-21:00, Mon., 10 Feb. 0.0300 0.0259 0.0281
19:01-20:00, Mon., 10 Feb. 0.0301 0.0248 0.0277
18:01-19:00, Mon., 10 Feb. 0.0297 0.0264 0.0279
17:01-18:00, Mon., 10 Feb. 0.0294 0.0259 0.0278
16:01-17:00, Mon., 10 Feb. 0.0294 0.0258 0.0278
15:01-16:00, Mon., 10 Feb. 0.0301 0.0255 0.0277
14:01-15:00, Mon., 10 Feb. 0.0296 0.0258 0.0277
13:01-14:00, Mon., 10 Feb. 0.0294 0.0263 0.0278
12:01-13:00, Mon., 10 Feb. 0.0302 0.0263 0.0279
11:01-12:00, Mon., 10 Feb. 0.0298 0.0260 0.0280
10:01-11:00, Mon., 10 Feb. 0.0302 0.0257 0.0281
09:01-10:00, Mon., 10 Feb. 0.0304 0.0264 0.0282
08:01-09:00, Mon., 10 Feb. 0.0299 0.0264 0.0281
07:01-08:00, Mon., 10 Feb. 0.0297 0.0263 0.0280
06:01-07:00, Mon., 10 Feb. 0.0297 0.0260 0.0279
05:01-06:00, Mon., 10 Feb. 0.0299 0.0257 0.0280
04:01-05:00, Mon., 10 Feb. 0.0302 0.0258 0.0278
03:01-04:00, Mon., 10 Feb. 0.0294 0.0259 0.0278
02:01-03:00, Mon., 10 Feb. 0.0296 0.0257 0.0279
01:01-02:00, Mon., 10 Feb. 0.0305 0.0259 0.0278
00:01-01:00, Mon., 10 Feb. 0.0299 0.0261 0.0279