Kast spectrum of SN 2021yja on 2021-09-11 (+4d)	Kast spectrum of SN 2021yja on 2021-09-13 (+6d)	HST/STIS spectrum of SN 2021yja on 2021-09-21 (+14d)
J/ApJ/934/134.graph_sql_kastfile=sp-kast/sn2021yja-20210911.515.coadd.blotch-ui.txt&Date=2021-09-11&Phase=4sp+4d	J/ApJ/934/134.graph_sql_kastfile=sp-kast/sn2021yja-20210913.524.blotch-ui.txt&Date=2021-09-13&Phase=6sp+6d	J/ApJ/934/134.graph_sql_hstfile=sp-hst/21yja_epoch2_09_21_21.txt&Date=2021-09-21&Phase=14sp+14d
Kast spectrum of SN 2021yja on 2021-10-07 (+30d)	Kast spectrum of SN 2021yja on 2021-11-03 (+57d)	Kast spectrum of SN 2021yja on 2022-01-06 (+121d)
J/ApJ/934/134.graph_sql_kastfile=sp-kast/sn2021yja-20211007.466.coadd.blotch-ui.txt&Date=2021-10-07&Phase=30sp+30d	J/ApJ/934/134.graph_sql_kastfile=sp-kast/sn2021yja-20211103.448.coadd.blotch-ui.txt&Date=2021-11-03&Phase=57sp+57d	J/ApJ/934/134.graph_sql_kastfile=sp-kast/sn2021yja-20220106.280.coadd.blotch-ui.txt&Date=2022-01-06&Phase=121sp+121d