Synthetic magnitudes of spectra.

 B_max is taken to have been 18 days after explosion.

 The spectra are NOT corrected for extinction or heliocentric
   redshift and so these should be observed magnitudes.
   I also havn't corrected to make the early spectra agree with
   a fit to Bruno's template.  The zdaya spectra have have the
   correction for extinction, redshift, and Bruno's template fit.

 The day 732 spectrum was obtained by scanning from Kirshner & Oke
   (1975) and so the value for day 732 are especially suspect which
   is too bad because they are vitally important. 

 Note none of the U magnitudes are from good coverage of the U band.
   Thus these U's are probably pretty poor.

Omit altogether
      34.0      .000 1      .000 1    12.192 1     9.666 1     9.392 0

 No. t(days)         U           B           V           R           I
END:
      22.0     8.904 1     8.981 0     8.828 0     8.838 0     9.186 0
      23.0     8.637 1     8.721 0     8.593 0     8.691 0     9.106 0
      24.0     8.499 1     8.633 0     8.545 0     8.701 0     9.119 0
      27.0     9.132 1     9.085 0     8.870 0     9.053 0     9.413 0
      29.0     9.561 1     9.402 0     9.279 0     9.433 0     9.522 0
      30.0     9.830 1     9.642 0     9.230 0     9.416 0     9.595 0
      38.0    10.547 1    10.285 0     9.474 0     9.354 0     9.343 0
      41.0    10.395 1    10.142 0     9.261 0     9.200 0     9.223 0
      44.0    10.811 1    10.637 0     9.694 0     9.423 0     9.262 0
      53.0    11.626 1    11.365 0    10.351 0    10.198 0     9.878 0
      62.0    12.081 1    11.681 0    10.755 0    10.610 0    10.489 0
      73.0    11.707 1    11.309 0    10.480 0    10.281 0    10.250 0
      76.0    11.995 1    11.727 0    11.033 0    10.880 0    10.896 0
      98.0    13.489 1    12.321 1    11.659 0    11.571 0    11.656 0
     222.0    18.653 1    13.998 1    13.730 0    14.509 0    14.587 0
     253.0    15.740 1    14.480 0    14.347 0    15.153 0    15.120 0
     365.0    17.677 1    16.207 0    16.107 0    16.886 0    16.104 0
     434.0    17.527 1    17.276 0    17.168 0    17.775 0    16.661 1
     732.0    23.653 1    20.837 1    22.091 1      .000 1      .000 1

 0 means everything is OK.
 1 means the spectrum did not cover the whole passband.