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Hi.. newbie need help! Arcgis 10.0 creating contour from xyz.xls i have a xyz.xls example: Longitude Latitude Feb2K Feb2K10 Change 79.78130000 11.86110000 7.75 14.20 -6.45 79.80210000 11.88300000 5.00 11.40 -6.40 79.81400000 11.99150000 14.80 10.20 4.60 79.82310000 11.92580000 15.65 10.90 4.75 79.86100000 12.03520000 0.00 14.40 -14.40 79.77650000 11.79700000 6.60 16.55 -9.95 79.65800000 11.81900000 0.00 24.40 -24.40 79.78160000 11.81770000 6.00 14.10 -8.10 79.67600000 11.88110000 22.60 33.60 -11.00 79.75550000 11.77620000 6.00 6.65 -0.65 79.75550000 11.77640000 7.00 6.00 1.00 79.69700000 11.86700000 0.00 24.75 -24.75 79.74090000 11.89440000 0.00 20.10 -20.10 79.78460000 11.94050000 23.55 33.75 -10.20 79.80890000 11.90170000 6.00 11.70 -5.70 79.80850000 11.90200000 6.15 12.10 -5.95 79.77750395 11.91195638 9.10 15.55 -6.45 79.79510000 11.86110000 0.00 11.30 -11.30 79.76158000 11.86420000 10.00 9.30 0.70 79.78190000 11.78100000 5.55 4.80 0.75 ..... how i creating contour using arcgis 10.0 i a newbie plz help step by step. thank a lot of.