NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 200517d03h01m35s758087usUT
NOTE: Source region spec. is: 274.50096 -16.13139 4"
NOTE: Used archived XRT position of 274.50096 -16.13139  4.00
NOTE: position reference is GRB_Auto_Processing
WARNING: t_start for light curve (276) and t_start from the exposure report (63) do not agree.
  Replace ??? in draft Circular with correct value.

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

GRB 200516: Swift/UVOT Upper Limits

A. Belles (PSU) and ***BA*** (***BA INSTITUTION***)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 200516
***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GRB_Auto_Processing ***
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 first
finding chart (FC) exposure and subsequent exposures are:

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

u_FC               276          526          246         >19.3
u                  276          526          246         >19.3
w1                4593         4793          197         >19.7
m2                4388         4587          197         >19.3
w2                3977         4177          197         >18.7

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 12.87 in the direction of the burst
(Schlegel et al. 1998).