BasisPxType Field
Valid values:
2 = Closing Price at morning session
3 = Closing Price
4 = Current price
5 = SQ
6 = VWAP through a day
7 = VWAP through a morning session
8 = VWAP through an afternoon session
9 = VWAP through a day except "YORI" (an opening auction)
A = VWAP through a morning session except "YORI" (an opening auction)
B = VWAP through an afternoon session except "YORI" (an opening auction)
C = Strike
D = Open
Z = Others