Ob = OBV();
Plot(Ob,"",colorWhite,styleNoTitle|styleThick);
LB = Day()!=Ref(Day(),1);
Zero = ValueWhen(LB,Ob);
T = TimeNum();
T1 = T >= 105900 AND T <=110000;
T2 = T >= 125900 AND T <=130000;
T3 = T >= 142900 AND T <=143000;
Sessions = IIf(T>=142959, ValueWhen(T3,Ob), IIf(T>=125959, ValueWhen(T2,Ob), IIf(T>=105959, ValueWhen(T1,Ob), Zero)));
Plot(Sessions,"",colorLime,styleNoLabel|styleNoRescale|styleStaircase|styleDashed,0,0,0,-5);