Added timestamp columns.

    __tablename__ = "lines_parameters"

    zipped_grid_name = Column(String(150), primary_key=True)

    lines_mode = Column(String(20))

    created_on = Column(DateTime)

class SpeciesAndPartners(Base):

    molecular_abundance = Column(Float)

    collision_partner = Column(String(100), primary_key=True)

    molecular_abundance_collision_partner = Column(Float)

    created_on = Column(DateTime)

class ModelPars(Base):

    width_kms = Column(Float)

    nchannels = Column(Integer)

    npix = Column(Integer)

    created_on = Column(DateTime)

class MomentZeroMaps(Base):

    fits_cube_name = Column(String(150))

    integration_limit_low = Column(Float)

    integration_limit_high = Column(Float)

    created_on = Column(DateTime)

class RatioMaps(Base):

    mom_zero_name_2 = Column(String(150))

    aggregated_ratio = Column(Float)

    aggregation_function = Column(String(20))

    created_on = Column(DateTime)

# class Address(Base):