y           x
       0.252429    -4868.68
       0.252141    -4868.09
       0.251809    -4867.41
       0.297989    -3375.19
       0.296257    -3373.14
       0.295319    -3372.03
       0.339603    -2473.74
       0.337731    -2472.35
       0.333820    -2469.45
       0.389510    -1894.65
       0.386998    -1893.40
       0.438864    -1497.24
       0.434887    -1495.85
       0.427893    -1493.41
       0.471568    -1208.68
       0.461699    -1206.18
       0.461144    -1206.04
       0.513532     -997.92
       0.506641     -996.61
       0.505062     -996.31
       0.535648     -834.94
       0.533726     -834.66
       0.568064     -710.03
       0.612886     -530.16
       0.624169     -464.17