There have been some posts in the past that have said Theo in dollars roughly equals TC/2 which makes sense because slots have roughly a 10% house edge and a TC on slots is $5 a TC.
So if we consider that and the generic formula to generate theo for any table game.
Theo = Avg wager x wagers/hr × hours played x house advantage
The problem is we don't know exactly the hands per hour or the HA they use. For comp purposes they don't always assume optimal play for the HA either.
Also they'll measure by the minute, so if "about 4 hours" is really like 3:38 (3.633 hours), it will throw things off a bit too.
Because the only two things that are really variable here is your average bet and time played. The value of wagers/hr x house advantage will probably stay the same for all H17 shoes with the same rules.
Given your data, I think a good value for wagers/hr x house advantage is 0.5.
So if your avg. bet is $112.5...
$112.5 x 4 hours x 0.5 = $225 theo
And theo in dollars x 2 = 450 TCs
Or in a more simple way, at least at 3:2 H17 blackjack, your average bet will roughly earn you that many TCs per hour of play. This "rule of thumb" seems reasonable to me, but I've never played BJ enough at CET to personally verify this.
Maybe some other members have more real data to back this up.