NOTE: uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231130d05h28m57s872790usUT
NOTE: Source region spec. is: 10.720 -81.636 3"
NOTE: Used archived BAT position of  10.72000 -81.63600
NOTE: position reference is GCN_FOM_Notice
WARNING: t_start for light curve (722997238) and t_start from the exposure report (0) do not agree.
  Replace ??? in draft Circular with correct value.

=========== Draft Upper Limit Circular ========

GRB ??????: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB ??????
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the BAT position
*** POSITION REFERENCE is GCN_FOM_Notice ***
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white        722997238    722997681          433         >21.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.116 in the direction of the burst
(Schlegel et al. 1998).