Updated FLUX TUCD* to 'scr.net'
Changed Flux units syntax to `erg cm**(-2) s**(-1) angstrom**(-1)`
Added `meta.main` token to FLUX column
Correct TUCD* values
Updated error units
Updated error UCDs
Updated SKYBACKGROUND TUTYP
Corrected calculation for `TDMIN1` and `TDMAX1`