save text on amplitude scaling (README_supp)

[carltape]

This may be obsolete. I am deleting the file README_supp, so I wanted a place to save this text.

We list four options that have different scaling for the seismograms (pssac2 options).

option 1 (absolute amplitudes):
check that the line in cap_plt.pl [ $stam = "$am/0"; ] is uncommented in cap_plt.pl

cap.pl -H0.2 -P2.2e-6 -S2/5/0 -T35/70 -F -D2/1/0.5 -C0.05/0.3/0.02/0.1 -W1 -X10 -Mcus_15/5.0 20080418093700

option 2 (all seismograms scaled to each seismogram's max):
check that the line in cap_plt.pl [ $stam = "$am/0"; ] is commented in cap_plt.pl

cap.pl -H0.2 -P-0.7 -S2/5/0 -T35/70 -F -D2/1/0.5 -C0.05/0.3/0.02/0.1 -W1 -X10 -Mcus_15/5.0 20080418093700

option 3 (scaling by distance only):
check that the line in cap_plt.pl [ $stam = "$am/0"; ] is commented in cap_plt.pl

cap.pl -H0.2 -P1.5e-8 -S2/5/0 -T35/70 -F -D2/1/0.5 -C0.05/0.3/0.02/0.1 -W1 -X10 -Mcus_15/5.0 20080418093700

option 4:
check that the line in cap_plt.pl [ $stam = "$am/0"; ] is commented in cap_plt.pl

cap.pl -H0.2 -P0.3 -S2/5/0 -T35/70 -F -D2/1/0.5 -C0.05/0.3/0.02/0.1 -W1 -X10 -Mcus_15/5.0 20080418093700

note: option 1 appears to match the default output ps file
options 2 and 3 generate ps files that do NOT exactly match the default output ps file
option 4 does not plot visible seismograms

OUTPUT for each option:

seconds per inch = 40
amplitude scaling am = 2.2e-6
pssac2 amplitude scaling stam = 2.2e-6/0

seconds per inch = 40
amplitude scaling am = -0.7
pssac2 amplitude scaling stam = -0.7/0

seconds per inch = 40
amplitude scaling am = 1.5e-8
pssac2 amplitude scaling stam = 1.5e-8/0

seconds per inch = 40
amplitude scaling am = 0.3

pssac2 amplitude scaling stam = 0.3/-1