# A_PRESUPERNOVA_PROFILE_COLUMN_STRUCTURE.txt
# STELLAR_BOUNDARY_DYNAMICS_I
# Phase A — Zenodo 5556959 .data Column Structure Inspection

FILES INSPECTED:
profile_single_M12.09_128net.data
profile_single_M19.98_128net.data

FILE TYPE:
MESA profile-style processed pre-supernova model output.

STRUCTURE:
line 1: global header column numbers
line 2: global header names
line 3: global header values
line 4: blank
line 5: profile column numbers
line 6: profile column names
line 7+: profile zone data

GLOBAL HEADER COLUMNS INCLUDE:
model_number
num_zones
initial_mass
initial_z
star_age
time_step
Teff
photosphere_L
photosphere_r
center_eta
center_h1
center_he4
center_c12
center_o16
center_ne20
star_mass
he_core_mass
c_core_mass
o_core_mass
si_core_mass
fe_core_mass
dynamic_time
kh_timescale
nuc_timescale
power_nuc_burn
power_h_burn
power_he_burn
power_neu
time_seconds

PROFILE ZONE COLUMNS INCLUDE:
zone
logT
logRho
logP
logR
luminosity
entropy
q
radius
mass
ye
abar
mu
h1
he4
c12
o16
ne20
mg24
si28
fe56
eps_nuc
non_nuc_neu

DIRECTION:
zone = 1 is the outer surface/envelope side.
The final zone is the central core side.

For profile_single_M12.09_128net.data:
zone 1 has low logT/logRho and q = 1.
final zone has high logT/logRho and q near 0.

For profile_single_M19.98_128net.data:
same orientation.

CONVERTER:
tools/a_presupernova_profile_to_ladder.py

CONVERTER OUTPUT:
ladders/A1_12M_presupernova_profile_ladder.csv
ladders/A2_20M_presupernova_profile_ladder.csv

STATUS:
Column structure inspected.
Real Phase A converter created.
