obs     x         y
        1 0.2775889 696.20174
        2 -0.517632 72.295359
        3 -0.303792 113.55840
        4 -2.078444 1.8890014
        5 1.4366185 650.52223
        6 -0.235768 96.996475
        7 -0.868704 35.627923
        8 1.8890238 31566.051
        9 -1.743802 3.9250497
       10 -0.305831 445.65564
       11 0.2756379 290.04645
       12 1.0474655 402.32246
       13 1.3234957 930.59459
       14 -0.237969 56.925312
       15 0.7173053 800.51180
       16 -0.886568 6.8234601
       17 0.4935309 72.466261
       18 0.7128258 2621.0541
       19 1.0458933 293.29129
       20 -1.559868 5.5906742
       21 0.9805923 339.38955
       22 -0.597517 39.637404
       23 -1.448257 36.087594
       24  0.443873 446.68841
       25 0.1877068 520.12349
       26 -0.295656 62.706673
       27 -0.284534 116.83186
       28  1.140876 3917.2343
       29 0.1878306 179.25413
       30 -0.153660 551.13103