Table 2: Listed are for the two data sets: the individual event statistics ( $N_{{\rm on}}$, $N_{{\rm off}}$, and $N_s=N_{{\rm on}}-\Omega _{{\rm on}}/\Omega _{{\rm off}}\cdot N_{{\rm off}}$), the rate of excess events per hour ( $\dot N_{\rm s}$), and the significance S calculated using Eq. (17) of Li & Ma (1983). The quantity $\Omega _{{\rm on}}/\Omega _{{\rm off}}$ is the normalization for the background estimate derived by taking the ratio of the solid angle subtended by the two separate regions.
  reanalyzed  
  1999-2000 2002

$T_{{\rm obs}}~[{\rm hrs}]$		 42.6 217.5
$\langle alt \rangle~[^\circ]$ 70.8 68.4
median(alt) $[^\circ]$ 73 70.4
$N_{{\rm on}}$ 309 1095
$N_{{\rm off}}$ 1447 6425
$\Omega _{{\rm on}}/\Omega _{{\rm off}}$ 1/7 1/7
$N_{{\rm s}} $ 102.3$\pm16.6$ 177.1$\pm33.5$
$\dot{N_{{\rm s}}}[1/{\rm hr}]$ 2.4$\pm0.4$ $0.81\pm0.15$
$S~[\sigma]$ 6.1 5.3

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