Plots of the density of observations (number in ten consecutive days) for asteroid (3457) Arnenordheim and selected sample of data. Left: resulting convolution of the observation time span in days vs the number of observations in each ten-day window. Right: sample of data at the peak of the 10-day window of search combining 17 observations. The x-axis is the observation date and the y-axis is the average AL residual from the orbital fit. Each dot represents one averaged set of transits observed in the FOV 1 in blue and FOV 2 in green.