Analytic Problem

Could someone provide insight on this request? create table scott ( mydate date, vehicle number, route number, tstamp date ) / insert into scott values ( to_date('10-APR-08','DD-MON-YY '), 5182,100, to_date('10- APR-08 00:59:00','DD-MON-YYHH24:MI:SS ') / insert into scott values ( to_date('10-APR-08','DD-MON-YY '), 5182,100, to_date('10-