According to ECSS-Q-70-21 and ASTM D 2863
Upward propagation according to NHB 8060-1B

Toxicity classes according to NHB 8060.1A:

OK       : CO<=25 and TO<=100 and OD<=26
Reject 1: CO<=25 and TO<=100 and OD > 26
Reject 2: CO < 25 and TO > 100 and OD > 26
Reject  : CO> 25 and TO> 100

CO : Carbon Monoxide
TO : Total organic
OD : Odor 

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Retrieve records from the 'AMBIANCE' table. Searches for records whose field is identical to the search value.