The charts on BBC, Yahoo and similar interactive rate sites gave substantially false readings during the period that the two tier exchange rate was in existence.nkstan wrote:Here is a link to a Yahoo Finace interactive chart,showing 3 days of closing below 30 in 2007;JUly 16 at 29.90,July 30 at 20.85 and dec.31 at 29.70....... plus I did get 29.62 from the ATM during some period in 2007 even though my memory is faulty at timesJimboPSM wrote:Sorry Stan, in this case your memory is faulty, the chart is 100% correct.nkstan wrote:That chart is definitely wrong.I distinctly remember the baht going just below 30 ,3 years ago!![]()
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Link:
http://finance.yahoo.com/echarts?s=USDT ... l=USDTHB=X
The rates suffered from substantial distortion after the BoT introduced the two tier system in December 2006 because the data providers who provided the feeds to BBC, Yahoo, etc did not differentiate between the “Offshore” and “Onshore” rates; consequently the charts became pretty well useless.
The BBC and Yahoo charts were incorrect then, they have never been amended and they are still incorrect now.
I queried the charts with BBC and others at the time (and I also posted about it on UM), I had several telephone discussions with the BBC and although they did acknowledge there was a problem I could not persuade them to separate the “Offshore” and “Onshore” rates.
With regard to the Yahoo charts covering July and December 2007 - the following contain the USD/THB data from Kasikorn Bank for July and December 2007 which I collected on a daily basis and I believe it to be correct (I have cross checked the rates for a few of the days with Bangkok Bank and they are virtually identical), the Yahoo charts, like the BBC charts relied on mixed data feeds covering both Onshore and Offshore data which and in my opinion is incorrect. As can be seen the Onshore rates never got remotely close to "29" in July or December 2007.
July 2007 December 2007 The rates data that I used for my charts for the entire period of the two tier exchange rate system were the daily closing “Onshore” rates taken from the published foreign exchange rates at Kasikorn Bank. I have tried to recheck the Kasikorn data but the historical data on their website now only goes back to 2008, however I was able to check it on the Bangkok bank site where data for 2007 is still available and it is virtually identical to the old data I had from Kasikorn.
There were a multitude of cases that I can recall being posted on different Thai forums in 2007 where Thai banks were incorrectly using “Offshore” rates when they should have been using “Onshore” rates – subsequently it was noticeable that Thai banks appeared to make disproportionately large profits during the period of the two tier system (which would seem to indicate that they made a lot of errors which just happened to go in their favour).
In my opinion, if you received 29.62 on a transaction you were probably the victim of one of those incorrectly applied “Offshore” rates.