leg site hole age mnemonic auxiliary age mnemonic top of section depth(m) bottom of section depth(m) special condition age auxiliary age averaged age age top of section(million years) age bottom of section(million years) average age(million years)t data source 19 191 UPPER PLEISTOCENE 1.0 87.0 NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 19 191 MIDDLE PLEISTOCENE 134.0 236.0 NO AGE GIVEN NO AGE GIVEN 0.8 1.2 1 DSDP INITIAL REPORTS 19 191 LOWER PLEISTOCENE 274.0 330.0 NO AGE GIVEN NO AGE GIVEN 1.2 1.8 1.5 DSDP INITIAL REPORTS 19 191 UPPER PLIOCENE 384.0 527.0 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS