text: transmission_line	tx_capacity_type	tx_availability_type	tx_operational_type	load_zone_from	load_zone_to	tx_simple_loss_factor	reactance_ohms	carbon_cap_zone	carbon_cap_zone_import_direction	tx_co2_intensity_tons_per_mwh
  Tx1	tx_spec	exogenous	tx_simple	Zone1	Zone2	.	.	Zone1	negative	0.6
  