"run_id,date,operator,line_model,tube_count,pitch_mm,resin_type,gel_type,bend_radius_mm,attenuation_db_per_km_1310nm,attenuation_db_per_km_1550nm,ovality_pct,fill_uniformity_score,scrap_pct,notes"
"LT001,2025-08-21,OP-A,HK-LT-24,24,120,PU,GEL-A,40,0.36,0.22,3.1,4,1.2,""baseline"""
"LT002,2025-08-21,OP-A,HK-LT-24,24,132,PU,GEL-A,40,0.34,0.21,3.0,4,1.1,""pitch +10%"""
"LT003,2025-08-22,OP-B,HK-LT-24,24,132,PU,GEL-B,40,0.33,0.21,2.8,5,1.0,""alt gel"""
"LT004,2025-08-23,OP-B,HK-LT-24,24,120,PU,GEL-B,40,0.37,0.23,3.2,4,1.3,""baseline repeat"""
"LT005,2025-08-24,OP-C,HK-LT-24,24,132,PU,GEL-A,40,0.35,0.21,2.9,5,1.0,""repeat test"""