Question:

We were wondering if the far right column of the table (z1000 at cyclone center) was also time+6hrs, 
and therefore would correlate to the column with cyclone center coordinates, or if it's just time 
(at time P1 in the P1 row). Also, we wanted to clarify whether we should multiply -g/f to LDIA in 
addition to LAD and nLTHAD. 

Answer:

The clue to the first question is the blank space under z1000 at the top row. You know (almost
exactly) the 1000 hPa cyclone center Geopotential Height at its initial position at P1. The blank
z1000 values under the top row would be your predicted z1000 hPa cyclone center (at P1-P8 + 6-h) 
Geopotential Height based on the GFS fields at P1-P8. Your The z1000 cyclone center values under 
the top row correspond to the predicted position in the same row under the '6-h Cyclone lat/lon' 
column.

In answer to the second question, you must first figure out LTHAD before you can figure out the
magnitudes of LAD and then LDIA. The LAD magnitude is a fixed percentage of LTHAD and the LDIA 
magnitude is a fixed percentage of the LAD magnitude. The nearly LAD maps must be multiplied by
"-1" to get the proper sign (mimicking multiplying by "-g/f", even though the magnitude is known)
and maps related to LDIA determine whether is is positive (meeting both RH and vertical velocity
requirements; RH greater than or equal to 70% and upward vertical velocity) or zero (NOT meeting 
both RH and vertical velocity requirements).