bright = False;
noPointUnderneath = True;
mover = True;
real = False;
slope = 0.0;
t_slope = 0.0;
rb = 0.0;
positiveSubtraction = False;
brightstar = False;
scorr = 0.0;
latitude = True;

prevCandidates = observation["prv_candidates"];
m_now = observation["candidate"]["magpsf"];
m_app = observation["candidate"]["magap"];
t_now = observation["candidate"]["jd"];
fid_now = observation["candidate"]["fid"];
sgscore = observation["candidate"]["sgscore1"];
sgscore2 = observation["candidate"]["sgscore2"];
sgscore3 = observation["candidate"]["sgscore3"];
srmag = observation["candidate"]["srmag1"];
srmag2 = observation["candidate"]["srmag2"];
srmag3 = observation["candidate"]["srmag3"];
sgmag = observation["candidate"]["sgmag1"];
simag = observation["candidate"]["simag1"];
rbscore = observation["candidate"]["rb"];
magnr = observation["candidate"]["magnr"];
distnr = observation["candidate"]["distnr"];
distpsnr1=observation["candidate"]["distpsnr1"];
distpsnr2=observation["candidate"]["distpsnr2"];
distpsnr3=observation["candidate"]["distpsnr3"];
scorr = observation["candidate"]["scorr"];
fwhm = observation["candidate"]["fwhm"];
elong = observation["candidate"]["elong"];
nbad = observation["candidate"]["nbad"];
chipsf = observation["candidate"]["chipsf"];
gal_lat = observation["candidate"]["gal_lat"];

bright = m_now < 19.0;

if (gal_lat and gal_lat < 10 and gal_lat > -10) { latitude = False; }  # seemingly the only change...

if (observation["candidate"]["isdiffpos"] and (observation["candidate"]["isdiffpos"] = "t" or observation["candidate"]["isdiffpos"] = "1")) { 
  positiveSubtraction = True;
} 

if (rbscore and rbscore > 0.2) { 
  real = True;
}

if (sgscore and distpsnr1 and sgscore > 0.76 and distpsnr1<2) { 
  noPointUnderneath = False;
}

if ((distpsnr1 and srmag and distpsnr1 < 20 and srmag < 16.0 and srmag>0 and sgscore > 0.49) or 
    (distpsnr2 and srmag2 and distpsnr2 < 20 and srmag2 < 16.0 and srmag2>0 and sgscore2 > 0.49) or 
    (distpsnr3 and srmag3 and distpsnr3 < 20 and srmag3 < 16.0 and srmag3>0 and sgscore3 > 0.49) ) { 
  brightStar = True;
}

for candidate in prevCandidates { 
  if (candidate["jd"] and candidate["magpsf"] and candidate["fid"] and candidate["isdiffpos"] and 
     (candidate["isdiffpos"] = "t" or candidate["isdiffpos"] = "1")) {

    dt = t_now - candidate["jd"];

    if (dt > 0.02 and candidate["magpsf"] < 99) { mover = False; }

    if (dt = 0.0 and candidate["magpsf"] < 99) { 
      if (candidate["jd"] > t_slope and candidate["fid"] == fid_now) { 
        t_slope = candidate["jd"];
        slope = (m_now - candidate["magpsf"]) / dt;
      } 
    } 
  }
}

annotate "magnitude" m_now;
annotate "sgscore" sgscore;
annotate "slope" slope;
annotate "rbscore" rbscore;
annotate "mover" mover;
annotate "real" real;
annotate "positiveSubtraction" positiveSubtraction;
annotate "brightStar" brightStar;
annotate "magnr" magnr;
annotate "distnr" distnr;
annotate "scorr" scorr;
annotate "gal_lat" gal_lat;

filteron latitude and bright and noPointUnderneath and (not mover) and real and positiveSubtraction and (not brightStar);