Premarket volume labels showing less volume than real

Hi Pete!

I’m trying some of the premarket indicators posted here for volume labels and I noticed they don’t work fine. They show less volume than the real volume at any given time during premarket:

I used this indicator here and I had the problem I mentioned:

input startTime = 400;
input endTime = 929;
def startCounter = SecondsFromTime(startTime);
def endCounter = SecondsTillTime(endTime);
plot targetPeriod = if startCounter >= 0 and endCounter >= 0 then 1 else 0;
rec volumeTotal = if targetPeriod and !targetPeriod[1] then volume else if targetPeriod then volumeTotal[1] + volume else volumeTotal[1];
AddLabel(yes, Concat("Target Period Volume: ", volumeTotal), Color.GRAY);

And the same problem with this one:

# PreMarket Forecast Volume

# TOS

declare lower;

def Pre = if SecondsFromTime(0400) > 0 and

SecondsTillTime(0930) >= 0

then 1

else 0;

def isRollover = GetYYYYMMDD() != GetYYYYMMDD()[1];

def beforeStart = GetTime() < RegularTradingStart(GetYYYYMMDD());

def vol = if isRollover and beforeStart then volume else if beforeStart then vol[1] + volume else Double.NaN;

def PreMarketVol = if IsNaN(vol) then PreMarketVol[1] else vol;

AddLabel(yes, “Cumulative PMKT Vol: ” + PreMarketVol, if PreMarketVol > 3000000 then Color.GREEN else Color.light_gray);

So, any ideas what’s going on?

Thanks!