Measurement of radiation and radioactivity in Tokyo Port
As a countermeasure against harmful rumors related to the accident at TEPCO's Fukushima Daiichi Nuclear Power Plant, we have decided to monitor the radiation in the atmosphere at each container wharf in Tokyo Port and radioactivity in the seawater in the Port and radiation dose on the surface of containers through cooperation with Tokyo Port Terminal Corporation. The measurement result shall be disclosed on this website.
・April 14, 2011 ~ May 8, 2011 |
atmosphere (every Monday and Thursday), seawater(from Monday to Friday) |
・May 9, 2011 ~ March 31, 2013 |
atmosphere, seawater, container surface(from Monday to Friday) |
・April 1, 2013 ~March 31, 2014 |
atmosphere, seawater, container surface(every Monday and Thursday) |
・April 1, 2014 ~March 31, 2017 |
atmosphere, seawater, container surface(every Thursday (or Friday sometimes)) |
・April 1, 2017~ |
atmosphere, seawater, container surface(biweekly Thursday) |
* business days only
Map of monitoring site
・Amount of radiation in the air is measured with scintillation style survey meter 1.5 meter above ground level (1.0 meter above ground level by May 5, 2011).
Measurement result
1. Radiation in the atmosphere
*Measurement is conducted in the morning in front of central gates in each container piers, and the average of the indicated two extreme values is recorded.
(Unit:μSv/h)
Area | Oi | Aomi | Shinagawa | Central Breakwater Reclaimed Land | Remarks |
Dec.25(Thu) | 0.04 | 0.05 | 0.05 | 0.04 | - |
Dec.18(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
Dec.11(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Dec.4(Thu) | 0.06 | 0.05 | 0.05 | 0.05 | - |
Nov.27(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Nov.20(Thu) | 0.04 | 0.04 | 0.05 | 0.05 | - |
Nov.13(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
Nov.6(Thu) | 0.04 | 0.05 | 0.05 | 0.05 | - |
Oct.30(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Oct.23(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Oct.16(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Oct.9(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Oct.2(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Sep.25(Thu) | 0.05 | 0.05 | 0.05 | 0.06 | - |
Sep.18(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Sep.11(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Sep.4(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Aug.28(Thu) | 0.06 | 0.05 | 0.04 | 0.05 | - |
Aug.21(Thu) | 0.05 | 0.05 | 0.05 | 0.06 | - |
Aug.14(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Aug.7(Thu) | 0.06 | 0.05 | 0.04 | 0.04 | - |
Jul.31(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Jul.24(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Jul.17(Thu) | 0.06 | 0.05 | 0.05 | 0.05 | - |
Jul.10(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Jul.3(Thu) | 0.05 | 0.04 | 0.06 | 0.05 | - |
Jun.26(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
Jun.19(Thu) | 0.06 | 0.05 | 0.05 | 0.05 | - |
Jun.12(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
Jun.5(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
May.29(Thu) | 0.05 | 0.04 | 0.06 | 0.05 | - |
May.22(Thu) | 0.05 | 0.05 | 0.05 | 0.06 | - |
May.15(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
May.8(Thu) | 0.05 | 0.05 | 0.06 | 0.06 | - |
May.1(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Apr.24(Thu) | 0.05 | 0.05 | 0.05 | 0.06 | - |
Apr.17(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Apr.10(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Apr.3(Thu) | 0.05 | 0.04 | 0.05 | 0.05 | - |
Mar.31(Mon) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Mar.27(Thu) | 0.06 | 0.05 | 0.05 | 0.06 | - |
Mar.24(Mon) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Mar.20(Thu) | 0.06 | 0.05 | 0.05 | 0.06 | - |
Mar.17(Mon) | 0.06 | 0.05 | 0.05 | 0.05 | - |
Mar.13(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Mar.10(Mon) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Mar.6(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Mar.3(Mon) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Feb.27(Thu) | 0.05 | 0.04 | 0.05 | 0.05 | - |
Feb.24(Mon) | 0.06 | 0.05 | 0.05 | 0.06 | - |
Feb.20(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Feb.20(Thu) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Feb.17(Mon) | 0.06 | 0.05 | 0.06 | 0.05 | - |
Feb.13(Thu) | 0.05 | 0.04 | 0.06 | 0.05 | - |
Feb.10(Mon) | 0.06 | 0.05 | 0.06 | 0.06 | - |
Feb.6(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Feb.3(Mon) | 0.05 | 0.05 | 0.06 | 0.06 | - |
Jan.30(Thu) | 0.06 | 0.05 | 0.05 | 0.05 | - |
Jan.27(Mon) | 0.05 | 0.04 | 0.05 | 0.05 | - |
Jan.23(Thu) | 0.05 | 0.05 | 0.06 | 0.05 | - |
Jan.20(Mon) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Jan.16(Thu) | 0.05 | 0.05 | 0.05 | 0.05 | - |
Jan.9(Thu) | 0.05 | 0.04 | 0.05 | 0.05 | - |
Jan.6(Mon) | 0.05 | 0.05 | 0.05 | 0.05 | - |
2. Radioactivity in the seawater (surface)
*Seawater to measure is obtained at the point between Oi Container Wharf and Aomi Container Wharf in the morning.
*"ND" means that the data were blow thedetection limit (not detected).
(Unit:Bq/L)
Type | Iodine-131 | Caesium-134 | Caesium-137 | Remarks |
Dec.25(Thu) | ND | ND | ND | - |
Dec.18(Thu) | ND | ND | ND | - |
Dec.11(Thu) | ND | ND | ND | - |
Dec.4(Thu) | ND | ND | ND | - |
Nov.27(Thu) | ND | ND | ND | - |
Nov.20(Thu) | ND | ND | ND | - |
Nov.13(Thu) | ND | ND | ND | - |
Nov.6(Thu) | ND | ND | ND | - |
Oct.30(Thu) | ND | ND | ND | - |
Oct.23(Thu) | ND | ND | ND | - |
Oct.16(Thu) | ND | ND | ND | - |
Oct.9(Thu) | ND | ND | ND | - |
Oct.2(Thu) | ND | ND | ND | - |
Sep.25(Thu) | ND | ND | ND | - |
Sep.18(Thu) | ND | ND | ND | - |
Sep.11(Thu) | ND | ND | ND | - |
Sep.4(Thu) | ND | ND | ND | - |
Aug.28(Thu) | ND | ND | ND | - |
Aug.21(Thu) | ND | ND | ND | - |
Aug.14(Thu) | ND | ND | ND | - |
Aug.7(Thu) | ND | ND | ND | - |
Jul.31(Thu) | ND | ND | ND | - |
Jul.24(Thu) | ND | ND | ND | - |
Jul.17(Thu) | ND | ND | ND | - |
Jul.10(Thu) | ND | ND | ND | - |
Jul.3(Thu) | ND | ND | ND | - |
Jun.26(Thu) | ND | ND | ND | - |
Jun.19(Thu) | ND | ND | ND | - |
Jun.12(Thu) | ND | ND | ND | - |
Jun.5(Thu) | ND | ND | ND | - |
May.29(Thu) | ND | ND | ND | - |
May.22(Thu) | ND | ND | ND | - |
May.15(Thu) | ND | ND | ND | - |
May.8(Thu) | ND | ND | ND | - |
May.1(Thu) | ND | ND | ND | - |
Apr.24(Thu) | ND | ND | ND | - |
Apr.17(Thu) | ND | ND | ND | - |
Apr.10(Thu) | ND | ND | ND | - |
Apr.3(Thu) | ND | ND | ND | - |
Mar.31(Mon) | ND | ND | ND | - |
Mar.27(Thu) | ND | ND | ND | - |
Mar.24(Mon) | ND | ND | ND | - |
Mar.20(Thu) | ND | ND | ND | - |
Mar.17(Mon) | ND | ND | ND | - |
Mar.13(Thu) | ND | ND | ND | - |
Mar.10(Mon) | ND | ND | ND | - |
Mar.6(Thu) | ND | ND | ND | - |
Mar.3(Mon) | ND | ND | ND | - |
Feb.27(Thu) | ND | ND | ND | - |
Feb.24(Mon) | ND | ND | ND | - |
Feb.20(Thu) | ND | ND | ND | - |
Feb.20(Thu) | ND | ND | ND | - |
Feb.17(Mon) | ND | ND | ND | - |
Feb.13(Thu) | ND | ND | ND | - |
Feb.10(Mon) | ND | ND | ND | - |
Feb.6(Thu) | ND | ND | ND | - |
Feb.3(Mon) | ND | ND | ND | - |
Jan.30(Thu) | ND | ND | ND | - |
Jan.27(Mon) | ND | ND | ND | - |
Jan.23(Thu) | ND | ND | ND | - |
Jan.20(Mon) | ND | ND | ND | - |
Jan.16(Thu) | ND | ND | ND | - |
Jan.9(Thu) | ND | ND | ND | - |
Jan.6(Mon) | ND | ND | ND | - |
3.Radiation at container surfaces
*Measure radiation dose on the surface of each sample container at the gate of pier head, and disclose number of samples, maximum volume, minimum volume, average volume by pier.
(Unit: pcs,μSv/h)
Area | Oi | Aomi | Shinagawa | Central Breakwater Reclaimed Land | |
Dec.25(Thu) | samples | 21 | 13 | 5 | 6 |
maximum | 0.04 | 0.04 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Dec.18(Thu) | samples | 22 | 16 | 4 | 5 |
maximum | 0.06 | 0.05 | 0.05 | 0.04 | |
minimum | 0.02 | 0.02 | 0.02 | 0.03 | |
average | 0.04 | 0.03 | 0.03 | 0.04 | |
decontaminated | 0 | 0 | 0 | 0 | |
Dec.11(Thu) | samples | 20 | 13 | 4 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.03 | 0.02 | |
average | 0.04 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Dec.4(Thu) | samples | 26 | 11 | 1 | 7 |
maximum | 0.05 | 0.04 | 0.02 | 0.04 | |
minimum | 0.01 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.02 | 0.02 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Nov.27(Thu) | samples | 20 | 14 | 3 | 6 |
maximum | 0.05 | 0.04 | 0.03 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Nov.20(Thu) | samples | 21 | 15 | 3 | 6 |
maximum | 0.04 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.02 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Nov.13(Thu) | samples | 20 | 12 | 3 | 5 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Nov.6(Thu) | samples | 20 | 16 | 6 | 5 |
maximum | 0.06 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.01 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Oct.30(Thu) | samples | 21 | 13 | 3 | 5 |
maximum | 0.06 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Oct.23(Thu) | samples | 21 | 15 | 5 | 6 |
maximum | 0.05 | 0.04 | 0.06 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Oct.16(Thu) | samples | 21 | 15 | 3 | 5 |
maximum | 0.05 | 0.08 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Oct.9(Thu) | samples | 21 | 16 | 5 | 5 |
maximum | 0.04 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Oct.2(Thu) | samples | 21 | 16 | 3 | 5 |
maximum | 0.06 | 0.04 | 0.03 | 0.04 | |
minimum | 0.02 | 0.01 | 0.01 | 0.03 | |
average | 0.03 | 0.03 | 0.02 | 0.04 | |
decontaminated | 0 | 0 | 0 | 0 | |
Sep.25(Thu) | samples | 20 | 15 | 3 | 6 |
maximum | 0.05 | 0.05 | 0.05 | 0.05 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Sep.18(Thu) | samples | 21 | 15 | 1 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.02 | 0.02 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Sep.11(Thu) | samples | 20 | 12 | 1 | 5 |
maximum | 0.04 | 0.05 | 0.04 | 0.04 | |
minimum | 0.02 | 0.02 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Sep.4(Thu) | samples | 22 | 12 | 3 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.05 | |
minimum | 0.02 | 0.02 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Aug.28(Thu) | samples | 22 | 15 | 4 | 6 |
maximum | 0.05 | 0.05 | 0.05 | 0.03 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Aug.21(Thu) | samples | 20 | 17 | 2 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Aug.14(Thu) | samples | 22 | 12 | 4 | 6 |
maximum | 0.04 | 0.05 | 0.03 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Aug.7(Thu) | samples | 21 | 15 | 2 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.02 | 0.01 | |
average | 0.03 | 0.02 | 0.03 | 0.02 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jul.31(Thu) | samples | 21 | 15 | 4 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jul.24(Thu) | samples | 21 | 15 | 5 | 6 |
maximum | 0.07 | 0.03 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jul.17(Thu) | samples | 20 | 12 | 6 | 5 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jul.10(Thu) | samples | 21 | 16 | 4 | 6 |
maximum | 0.04 | 0.03 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jul.3(Thu) | samples | 21 | 15 | 5 | 5 |
maximum | 0.05 | 0.05 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jun.26(Thu) | samples | 23 | 12 | 6 | 6 |
maximum | 0.06 | 0.03 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jun.19(Thu) | samples | 22 | 14 | 4 | 7 |
maximum | 0.09 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jun.12(Thu) | samples | 22 | 11 | 5 | 5 |
maximum | 0.06 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.02 | 0.02 | 0.02 | |
average | 0.04 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jun.5(Thu) | samples | 21 | 13 | 4 | 5 |
maximum | 0.05 | 0.07 | 0.05 | 0.04 | |
minimum | 0.02 | 0.02 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
May.29(Thu) | samples | 22 | 13 | 4 | 5 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.01 | 0.03 | 0.03 | |
average | 0.03 | 0.03 | 0.04 | 0.04 | |
decontaminated | 0 | 0 | 0 | 0 | |
May.22(Thu) | samples | 22 | 15 | 5 | 6 |
maximum | 0.05 | 0.05 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
May.15(Thu) | samples | 21 | 15 | 5 | 5 |
maximum | 0.05 | 0.07 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
May.8(Thu) | samples | 22 | 13 | 2 | 5 |
maximum | 0.06 | 0.04 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
May.1(Thu) | samples | 21 | 14 | 5 | 6 |
maximum | 0.06 | 0.03 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Apr.24(Thu) | samples | 20 | 15 | 5 | 5 |
maximum | 0.04 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.02 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Apr.17(Thu) | samples | 22 | 15 | 2 | 5 |
maximum | 0.05 | 0.04 | 0.05 | 0.03 | |
minimum | 0.02 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Apr.10(Thu) | samples | 20 | 14 | 3 | 6 |
maximum | 0.05 | 0.05 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Apr.3(Thu) | samples | 20 | 17 | 4 | 5 |
maximum | 0.04 | 0.04 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.02 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.31(Mon) | samples | 20 | 13 | 5 | 4 |
maximum | 0.05 | 0.05 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.04 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.27(Thu) | samples | 21 | 9 | 6 | 4 |
maximum | 0.07 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.24(Mon) | samples | 20 | 15 | 5 | 6 |
maximum | 0.07 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.20(Thu) | samples | 20 | 15 | 2 | 7 |
maximum | 0.07 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.17(Mon) | samples | 20 | 12 | 5 | 5 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.02 | 0.02 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.13(Thu) | samples | 22 | 15 | 2 | 6 |
maximum | 0.05 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.10(Mon) | samples | 20 | 16 | 5 | 2 |
maximum | 0.07 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.6(Thu) | samples | 21 | 16 | 6 | 6 |
maximum | 0.06 | 0.04 | 0.04 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Mar.3(Mon) | samples | 21 | 14 | 8 | 4 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.27(Thu) | samples | 20 | 9 | 2 | 5 |
maximum | 0.06 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.24(Mon) | samples | 21 | 12 | 4 | 0 |
maximum | 0.04 | 0.04 | 0.04 | - | |
minimum | 0.02 | 0.01 | 0.02 | - | |
average | 0.03 | 0.02 | 0.03 | - | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.20(Thu) | samples | 20 | 15 | 3 | 6 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.20(Thu) | samples | 20 | 15 | 3 | 6 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.17(Mon) | samples | 20 | 15 | 5 | 5 |
maximum | 0.09 | 0.06 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.13(Thu) | samples | 22 | 13 | 5 | 5 |
maximum | 0.05 | 0.04 | 0.03 | 0.04 | |
minimum | 0.01 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.02 | 0.02 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.10(Mon) | samples | 20 | 13 | 2 | 3 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.6(Thu) | samples | 23 | 15 | 6 | 1 |
maximum | 0.05 | 0.03 | 0.05 | 0.03 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Feb.3(Mon) | samples | 21 | 15 | 4 | 4 |
maximum | 0.05 | 0.05 | 0.03 | 0.04 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.03 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.30(Thu) | samples | 20 | 14 | 5 | 6 |
maximum | 0.05 | 0.04 | 0.05 | 0.04 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.27(Mon) | samples | 19 | 15 | 4 | 5 |
maximum | 0.37 | 0.05 | 0.05 | 0.04 | |
minimum | 0.02 | 0.01 | 0.01 | 0.02 | |
average | 0.05 | 0.03 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
* One container with 0.37 μSv/h was detected at Oi Container Wharf, which included naturally occurring radioactive materials. | |||||
Jan.23(Thu) | samples | 23 | 15 | 5 | 2 |
maximum | 0.05 | 0.04 | 0.03 | 0.04 | |
minimum | 0.01 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.02 | 0.02 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.20(Mon) | samples | 26 | 9 | 3 | 1 |
maximum | 0.05 | 0.05 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.16(Thu) | samples | 21 | 16 | 2 | 6 |
maximum | 0.08 | 0.04 | 0.04 | 0.05 | |
minimum | 0.01 | 0.01 | 0.02 | 0.02 | |
average | 0.03 | 0.02 | 0.03 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.9(Thu) | samples | 22 | 14 | 5 | 5 |
maximum | 0.05 | 0.05 | 0.04 | 0.04 | |
minimum | 0.02 | 0.01 | 0.01 | 0.02 | |
average | 0.03 | 0.03 | 0.02 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 | |
Jan.6(Mon) | samples | 26 | 10 | 1 | 4 |
maximum | 0.05 | 0.03 | 0.04 | 0.03 | |
minimum | 0.01 | 0.01 | 0.03 | 0.02 | |
average | 0.03 | 0.02 | 0.04 | 0.03 | |
decontaminated | 0 | 0 | 0 | 0 |
For inquiries about our business,
please contact us through the
following:
Bureau of Port and Harbor,Tokyo Metropolitan Government
EMail:kouwan_kouhou@section.metro.tokyo.jp
8-1 Nishishinjuku 2-chome Shinjuku-ku Tokyo 163-8001, Japan