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Table 1:

Results from four years of HESS observations of H 2356-309.

Dark 		MJD MJD Time On Off $\alpha$ Excess Sig I(>240 GeV)a Crabb $\chi ^2$, NDFc P($\chi ^2$)c
Period First Last [h]         [$\sigma$] [10-12 cm-2 s-1] %    
06/2004 53 172 53 186 7.9 835 7778 0.0938 106 3.7 $3.86 \pm 0.88$ 2.1 8.9, 11 0.63
07/2004 53 201 53 209 3.0 280 2655 0.0938 31 1.8 $1.19 \pm 1.18$ 0.6 1.4, 4 0.84
09/2004 53 256 53 269 6.9 759 6015 0.0937 195 7.4 $6.91 \pm 0.94$ 3.7 4.0, 6 0.67
10/2004 53 286 53 296 9.9 950 8496 0.0914 174 5.7 $4.33 \pm 0.80$ 2.3 9.9, 6 0.13
11/2004 53 316 53 319 4.1 300 2700 0.0912 54 3.2 $3.82 \pm 1.22$ 2.0 7.0, 3 0.07
12/2004 53 341 53 353 8.2 559 5867 0.0926 16 0.6 $1.23 \pm 1.46$ 0.7 7.2, 5 0.21
06/2005 53 530 53 541 20.4 1200 12 275 0.0921 69 2.0 $1.78 \pm 1.04$ 1.0 6.3, 9 0.71
07/2005 53 556 53 570 16.5 1455 13 375 0.0922 221 5.9 $3.08 \pm 0.60$ 1.6 12.9, 13 0.46
08/2005 53 583 53 587 7.3 495 4920 0.0927 39 1.7 $0.56 \pm 0.85$ 0.3 5.7, 4 0.22
09/2005 53 614 53 615 2.6 152 1477 0.0946 12 1.0 $2.70 \pm 1.67$ 1.4 0.0, 1 0.96
07/2006 53 937 53 942 8.1 598 5926 0.0893 69 2.8 $2.27 \pm 0.89$ 1.2 2.5, 5 0.77
08/2006 53 970 53 978 2.2 188 1427 0.0894 60 4.8 $7.39 \pm 1.84$ 3.9 0.5, 3 0.91
09/2006 53 999 54 005 12.9 626 6044 0.0931 64 2.7 $1.26 \pm 0.77$ 0.7 7.2, 6 0.30
07/2007 54 295 54 307 7.0 502 4670 0.0915 75 3.4 $3.48 \pm 1.07$ 1.9 8.9, 10 0.54
2004 53 172 53 353 39.9 3683 33 511 0.0927 576 9.6 $4.06 \pm 0.42$ 2.2 19.1, 5 0.002
2005 53 530 53 615 46.7 3302 32 047 0.0924 341 5.9 $2.22 \pm 0.44$ 1.2 6.1, 3 0.11
2006 53 937 54 005 23.2 1412 13 397 0.0910 193 5.1 $2.36 \pm 0.56$ 1.3 9.5, 2 0.01
2007 54 295 54 307 7.0 502 4670 0.0915 75 3.4 $3.48 \pm 1.07$ 1.9 - -
Total 53 172 54 307 116.8 8899 83 625 0.0923 1185 12.6 $3.06 \pm 0.26$ 1.6 11.0, 3 0.01

Notes. (a) The 20% systematic error on the observed integral flux above 240 GeV is not shown. (b) The Crab nebula flux percentage is calculated relative to the HESS value above 240 GeV (Aharonian et al. 2006c). (c) The $\chi ^2$, degrees of freedom (NDF), and corresponding $\chi ^2$ probability P($\chi ^2$) are given for fits of a constant to I(>240 GeV) binned nightly within a dark period, or monthly within a year, or yearly within the total.


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