Some explanation about Time/Distance Y-axis scaling (From www.voacap.com by by Jari Perkiömäki)
Fact = The multiplier factor, usually 1 or 100 [for percentages]

Usually either 1. or 100. (100 for percents)

Code = Calulation code

0 = Ymin & Ymax are fixed (user defined).
1 = Ymin & Ymax are calculated from data (automatic).

Ymin = minimum Y value on axis
Ymax = maximun Y value on axis
Lab-inc = number label at every 'lab-inc' increment
Tic-inc = tick mark at every 'tic-inc' increment
EXAMPLE 1
Param SDBW (Median signal power at receiver (dBW))
Factor 1.
Code 0: user defined
Ymin -160.
Ymax -50.
Lab-inc 10.
Tic-inc 2.
Explanation:
Set the minimum value to -160 (corresponds to [median] S0 on the S-meter)
Set the maximum value to -50 (corresponds to [median] > S9 + 40 dB)
Set the number label at every 10th increment
Set the Y-axis tick mark at every 2nd increment
EXAMPLE 2
Param SNR (Median signal-to-noise ratio (dB))
Factor 1.
Code 0: user defined
Ymin 0.
Ymax 100.
Lab-inc 10.
Tic-inc 2.
Explanation:
Set the minimum value to 0. This is, in fact, too low. A minimum value of 20 would do.
Set the maximum value to 100. For big BC stations, this can be too low a max value...
Set the number label at every 10th increment
Set the Y-axis tick mark at every 2nd increment
EXAMPLE 3
Param SNRxx (Signal-to-Noise ratio (dB) at Req. Rel.)
Factor 1.
Code 0 (user defined)
Ymina 0.
Ymax 100.
Lab-inc 10.
Tic-inc 2
Explanation:
Set the minimum value to 0. This is, in fact, too low. A minimum value of 20 would do.
Set the maximum value to 100. Now, this can be too high a value. However, now at least, the SNR and SNRxx scales are the same.
Set the number label at every 10th increment
Set the Y-axis tick mark at every 2nd increment
See also: Area-coverage and Point-to-Point Graph Contour scaling