#date    time    tmajor tminor %change histmean   histsd    trmean   trstd  almean   alstd    F1    F2	timestamp tdiff
#F1 = (histmean-trigmean)/sqrt((histsd**2+trigsd**2)/2)
07/01/2004 20:00:58 224     ?      20.2    458.5     0.0       365.9     0.0    ?       ?        92.60        0.00  1088737258 168
07/01/2004 23:09:57 224     ?       0.0    447.2    30.3       365.9     0.0   365.9     0.0       3.80       0.00 1088748597 170