Table 3. Volume-Weighted Mean Concentrations of 3H, 3He, and O2 and Volume-Weighted Mean Temperature (T) in the Deep-Water Body, Below 200 m, 1990 and May 2005


Year	3H (TU)	3He (10-14 cm3 STP g-1)a	O2(1011 g)	T(degreeC)


1990	19.8	9.9	4.4	3.24
2005	7.6	11.7	1.1	3.34

aSTP, standard temperature and pressure.