The ExoClock Project is an effort to keep the ephemerides of exoplanets as precise as 
possible for planning future observations. If you have observed an exoplanet you can
contribute your observation at: 

https://www.exoclock.space

File to upload: PHOTOMETRY_APERTURE.txt 
(this is a suggestion based on the scatter 
of your light curves, you can also try 
uploading PHOTOMETRY_GAUSS.txt)

Planet: HAT-P-1b 
(this is the closest known exoplanet found 
in the catalogue, if this is not the target 
you observed, please ignore)

Time format: JD_UTC 
(UTC-based Julian date)

Time stamp: Exposure start 
(the time produced refers to the beginning of each exposure)

Flux format: Flux 
(flux of target over summed flux of comparisons)

Filter: None detected

Exposure time in seconds: 10.0