Measurement results by the hour (Chofu) 12 Feb., 2024 - 18 Feb., 2024

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., 18 Feb. 0.0297 0.0258 0.0279
22:01-23:00, Sun., 18 Feb. 0.0295 0.0257 0.0278
21:01-22:00, Sun., 18 Feb. 0.0309 0.0260 0.0279
20:01-21:00, Sun., 18 Feb. 0.0295 0.0255 0.0277
19:01-20:00, Sun., 18 Feb. 0.0304 0.0256 0.0279
18:01-19:00, Sun., 18 Feb. 0.0300 0.0250 0.0278
17:01-18:00, Sun., 18 Feb. 0.0307 0.0262 0.0280
16:01-17:00, Sun., 18 Feb. 0.0299 0.0263 0.0281
15:01-16:00, Sun., 18 Feb. 0.0301 0.0261 0.0281
14:01-15:00, Sun., 18 Feb. 0.0307 0.0261 0.0282
13:01-14:00, Sun., 18 Feb. 0.0296 0.0265 0.0281
12:01-13:00, Sun., 18 Feb. 0.0304 0.0267 0.0284
11:01-12:00, Sun., 18 Feb. 0.0305 0.0264 0.0283
10:01-11:00, Sun., 18 Feb. 0.0305 0.0269 0.0285
09:01-10:00, Sun., 18 Feb. 0.0301 0.0267 0.0284
08:01-09:00, Sun., 18 Feb. 0.0304 0.0270 0.0288
07:01-08:00, Sun., 18 Feb. 0.0317 0.0270 0.0289
06:01-07:00, Sun., 18 Feb. 0.0331 0.0269 0.0294
05:01-06:00, Sun., 18 Feb. 0.0330 0.0283 0.0306
04:01-05:00, Sun., 18 Feb. 0.0322 0.0271 0.0298
03:01-04:00, Sun., 18 Feb. 0.0315 0.0262 0.0291
02:01-03:00, Sun., 18 Feb. 0.0318 0.0272 0.0293
01:01-02:00, Sun., 18 Feb. 0.0314 0.0271 0.0293
00:01-01:00, Sun., 18 Feb. 0.0307 0.0263 0.0282
23:01-24:00, Sat., 17 Feb. 0.0310 0.0260 0.0280
22:01-23:00, Sat., 17 Feb. 0.0315 0.0265 0.0282
21:01-22:00, Sat., 17 Feb. 0.0306 0.0263 0.0281
20:01-21:00, Sat., 17 Feb. 0.0301 0.0259 0.0282
19:01-20:00, Sat., 17 Feb. 0.0298 0.0260 0.0281
18:01-19:00, Sat., 17 Feb. 0.0302 0.0265 0.0283
17:01-18:00, Sat., 17 Feb. 0.0303 0.0263 0.0280
16:01-17:00, Sat., 17 Feb. 0.0306 0.0256 0.0284
15:01-16:00, Sat., 17 Feb. 0.0299 0.0258 0.0281
14:01-15:00, Sat., 17 Feb. 0.0304 0.0262 0.0283
13:01-14:00, Sat., 17 Feb. 0.0302 0.0264 0.0284
12:01-13:00, Sat., 17 Feb. 0.0303 0.0262 0.0282
11:01-12:00, Sat., 17 Feb. 0.0301 0.0259 0.0279
10:01-11:00, Sat., 17 Feb. 0.0302 0.0262 0.0281
09:01-10:00, Sat., 17 Feb. 0.0304 0.0266 0.0282
08:01-09:00, Sat., 17 Feb. 0.0305 0.0259 0.0281
07:01-08:00, Sat., 17 Feb. 0.0302 0.0266 0.0283
06:01-07:00, Sat., 17 Feb. 0.0309 0.0260 0.0281
05:01-06:00, Sat., 17 Feb. 0.0304 0.0262 0.0281
04:01-05:00, Sat., 17 Feb. 0.0300 0.0263 0.0281
03:01-04:00, Sat., 17 Feb. 0.0304 0.0264 0.0281
02:01-03:00, Sat., 17 Feb. 0.0299 0.0260 0.0282
01:01-02:00, Sat., 17 Feb. 0.0298 0.0261 0.0280
00:01-01:00, Sat., 17 Feb. 0.0298 0.0263 0.0280
23:01-24:00, Fri., 16 Feb. 0.0298 0.0256 0.0279
22:01-23:00, Fri., 16 Feb. 0.0301 0.0261 0.0279
21:01-22:00, Fri., 16 Feb. 0.0303 0.0261 0.0278
20:01-21:00, Fri., 16 Feb. 0.0303 0.0257 0.0278
19:01-20:00, Fri., 16 Feb. 0.0305 0.0262 0.0279
18:01-19:00, Fri., 16 Feb. 0.0300 0.0257 0.0278
17:01-18:00, Fri., 16 Feb. 0.0307 0.0269 0.0284
16:01-17:00, Fri., 16 Feb. 0.0311 0.0263 0.0284
15:01-16:00, Fri., 16 Feb. 0.0309 0.0269 0.0286
14:01-15:00, Fri., 16 Feb. 0.0309 0.0263 0.0286
13:01-14:00, Fri., 16 Feb. 0.0304 0.0266 0.0287
12:01-13:00, Fri., 16 Feb. 0.0305 0.0270 0.0289
11:01-12:00, Fri., 16 Feb. 0.0307 0.0270 0.0288
10:01-11:00, Fri., 16 Feb. 0.0310 0.0265 0.0288
09:01-10:00, Fri., 16 Feb. 0.0315 0.0271 0.0289
08:01-09:00, Fri., 16 Feb. 0.0314 0.0275 0.0291
07:01-08:00, Fri., 16 Feb. 0.0316 0.0276 0.0291
06:01-07:00, Fri., 16 Feb. 0.0313 0.0276 0.0294
05:01-06:00, Fri., 16 Feb. 0.0312 0.0275 0.0293
04:01-05:00, Fri., 16 Feb. 0.0318 0.0263 0.0293
03:01-04:00, Fri., 16 Feb. 0.0311 0.0274 0.0293
02:01-03:00, Fri., 16 Feb. 0.0301 0.0264 0.0286
01:01-02:00, Fri., 16 Feb. 0.0303 0.0260 0.0282
00:01-01:00, Fri., 16 Feb. 0.0305 0.0258 0.0276
23:01-24:00, Thu., 15 Feb. 0.0301 0.0259 0.0278
22:01-23:00, Thu., 15 Feb. 0.0295 0.0249 0.0276
21:01-22:00, Thu., 15 Feb. 0.0297 0.0254 0.0278
20:01-21:00, Thu., 15 Feb. 0.0294 0.0261 0.0277
19:01-20:00, Thu., 15 Feb. 0.0294 0.0257 0.0275
18:01-19:00, Thu., 15 Feb. 0.0297 0.0254 0.0274
17:01-18:00, Thu., 15 Feb. 0.0297 0.0259 0.0277
16:01-17:00, Thu., 15 Feb. 0.0302 0.0248 0.0278
15:01-16:00, Thu., 15 Feb. 0.0307 0.0259 0.0278
14:01-15:00, Thu., 15 Feb. 0.0302 0.0244 0.0278
13:01-14:00, Thu., 15 Feb. 0.0309 0.0262 0.0278
12:01-13:00, Thu., 15 Feb. 0.0301 0.0246 0.0280
11:01-12:00, Thu., 15 Feb. 0.0305 0.0259 0.0281
10:01-11:00, Thu., 15 Feb. 0.0315 0.0276 0.0292
09:01-10:00, Thu., 15 Feb. 0.0319 0.0271 0.0294
08:01-09:00, Thu., 15 Feb. 0.0322 0.0266 0.0302
07:01-08:00, Thu., 15 Feb. 0.0328 0.0280 0.0302
06:01-07:00, Thu., 15 Feb. 0.0319 0.0279 0.0299
05:01-06:00, Thu., 15 Feb. 0.0324 0.0276 0.0298
04:01-05:00, Thu., 15 Feb. 0.0315 0.0281 0.0301
03:01-04:00, Thu., 15 Feb. 0.0321 0.0279 0.0299
02:01-03:00, Thu., 15 Feb. 0.0326 0.0286 0.0302
01:01-02:00, Thu., 15 Feb. 0.0320 0.0271 0.0298
00:01-01:00, Thu., 15 Feb. 0.0314 0.0280 0.0297
23:01-24:00, Wed., 14 Feb. 0.0310 0.0273 0.0293
22:01-23:00, Wed., 14 Feb. 0.0316 0.0265 0.0292
21:01-22:00, Wed., 14 Feb. 0.0311 0.0264 0.0288
20:01-21:00, Wed., 14 Feb. 0.0308 0.0263 0.0283
19:01-20:00, Wed., 14 Feb. 0.0303 0.0263 0.0283
18:01-19:00, Wed., 14 Feb. 0.0304 0.0264 0.0281
17:01-18:00, Wed., 14 Feb. 0.0295 0.0264 0.0279
16:01-17:00, Wed., 14 Feb. 0.0306 0.0249 0.0278
15:01-16:00, Wed., 14 Feb. 0.0308 0.0266 0.0286
14:01-15:00, Wed., 14 Feb. 0.0304 0.0263 0.0285
13:01-14:00, Wed., 14 Feb. 0.0308 0.0268 0.0288
12:01-13:00, Wed., 14 Feb. 0.0320 0.0265 0.0291
11:01-12:00, Wed., 14 Feb. 0.0314 0.0270 0.0296
10:01-11:00, Wed., 14 Feb. 0.0315 0.0272 0.0297
09:01-10:00, Wed., 14 Feb. 0.0324 0.0280 0.0300
08:01-09:00, Wed., 14 Feb. 0.0334 0.0287 0.0306
07:01-08:00, Wed., 14 Feb. 0.0329 0.0283 0.0305
06:01-07:00, Wed., 14 Feb. 0.0328 0.0285 0.0306
05:01-06:00, Wed., 14 Feb. 0.0327 0.0288 0.0306
04:01-05:00, Wed., 14 Feb. 0.0326 0.0286 0.0305
03:01-04:00, Wed., 14 Feb. 0.0322 0.0286 0.0301
02:01-03:00, Wed., 14 Feb. 0.0324 0.0279 0.0301
01:01-02:00, Wed., 14 Feb. 0.0328 0.0276 0.0300
00:01-01:00, Wed., 14 Feb. 0.0314 0.0275 0.0296
23:01-24:00, Tue., 13 Feb. 0.0315 0.0277 0.0295
22:01-23:00, Tue., 13 Feb. 0.0314 0.0270 0.0293
21:01-22:00, Tue., 13 Feb. 0.0319 0.0276 0.0291
20:01-21:00, Tue., 13 Feb. 0.0302 0.0261 0.0281
19:01-20:00, Tue., 13 Feb. 0.0297 0.0256 0.0280
18:01-19:00, Tue., 13 Feb. 0.0303 0.0261 0.0281
17:01-18:00, Tue., 13 Feb. 0.0310 0.0259 0.0280
16:01-17:00, Tue., 13 Feb. 0.0306 0.0263 0.0281
15:01-16:00, Tue., 13 Feb. 0.0310 0.0266 0.0282
14:01-15:00, Tue., 13 Feb. 0.0322 0.0257 0.0283
13:01-14:00, Tue., 13 Feb. 0.0302 0.0261 0.0282
12:01-13:00, Tue., 13 Feb. 0.0308 0.0259 0.0285
11:01-12:00, Tue., 13 Feb. 0.0309 0.0263 0.0285
10:01-11:00, Tue., 13 Feb. 0.0313 0.0272 0.0291
09:01-10:00, Tue., 13 Feb. 0.0315 0.0272 0.0292
08:01-09:00, Tue., 13 Feb. 0.0311 0.0273 0.0296
07:01-08:00, Tue., 13 Feb. 0.0326 0.0270 0.0299
06:01-07:00, Tue., 13 Feb. 0.0316 0.0276 0.0297
05:01-06:00, Tue., 13 Feb. 0.0318 0.0277 0.0299
04:01-05:00, Tue., 13 Feb. 0.0316 0.0268 0.0295
03:01-04:00, Tue., 13 Feb. 0.0307 0.0258 0.0289
02:01-03:00, Tue., 13 Feb. 0.0304 0.0259 0.0284
01:01-02:00, Tue., 13 Feb. 0.0304 0.0263 0.0282
00:01-01:00, Tue., 13 Feb. 0.0311 0.0262 0.0282
23:01-24:00, Mon., 12 Feb. 0.0306 0.0256 0.0281
22:01-23:00, Mon., 12 Feb. 0.0303 0.0256 0.0278
21:01-22:00, Mon., 12 Feb. 0.0292 0.0249 0.0274
20:01-21:00, Mon., 12 Feb. 0.0298 0.0255 0.0276
19:01-20:00, Mon., 12 Feb. 0.0294 0.0252 0.0275
18:01-19:00, Mon., 12 Feb. 0.0298 0.0252 0.0277
17:01-18:00, Mon., 12 Feb. 0.0299 0.0256 0.0276
16:01-17:00, Mon., 12 Feb. 0.0300 0.0259 0.0281
15:01-16:00, Mon., 12 Feb. 0.0304 0.0262 0.0281
14:01-15:00, Mon., 12 Feb. 0.0300 0.0266 0.0284
13:01-14:00, Mon., 12 Feb. 0.0305 0.0258 0.0284
12:01-13:00, Mon., 12 Feb. 0.0307 0.0267 0.0286
11:01-12:00, Mon., 12 Feb. 0.0313 0.0269 0.0288
10:01-11:00, Mon., 12 Feb. 0.0308 0.0270 0.0290
09:01-10:00, Mon., 12 Feb. 0.0315 0.0271 0.0290
08:01-09:00, Mon., 12 Feb. 0.0316 0.0270 0.0288
07:01-08:00, Mon., 12 Feb. 0.0309 0.0268 0.0286
06:01-07:00, Mon., 12 Feb. 0.0309 0.0265 0.0287
05:01-06:00, Mon., 12 Feb. 0.0310 0.0259 0.0282
04:01-05:00, Mon., 12 Feb. 0.0297 0.0262 0.0282
03:01-04:00, Mon., 12 Feb. 0.0301 0.0265 0.0280
02:01-03:00, Mon., 12 Feb. 0.0298 0.0262 0.0283
01:01-02:00, Mon., 12 Feb. 0.0339 0.0268 0.0303
00:01-01:00, Mon., 12 Feb. 0.0398 0.0315 0.0354