first 25 values of x, 7 per line:
    406.94    198.63    961.99    238.36    910.21    188.81    467.37
    639.60    125.10    581.16    144.50    354.07    812.45    716.26
    150.35    753.40    387.70    491.69    788.64    624.17    263.02
    545.16    908.81    829.42    620.95
last 20 values of x, 4 per line:
    263.02    545.16    908.81    829.42
    620.95    684.85    479.14    210.61
    685.58     23.42    466.19    641.73
    985.22    803.12    139.89    106.97
    463.64    575.13    461.76    572.48
25 random values in range -20 to +20:
     -3.21    -16.49     -7.28    -16.93     15.46
     18.11     14.91     -6.18    -13.53    -15.35
      7.97      1.33     12.61      4.06     -3.08
    -15.40     19.87      9.73    -16.82    -19.17
     -9.17      3.50      2.29    -15.32    -17.67
10 random values in range -200 to +200:
    155.20     92.55    153.35    -93.08    141.43
    186.91   -181.99    -11.06   -139.40    133.89
40 random values in range 0 to 1000:
    813.00    589.60    820.91    615.80    703.70
    836.96    693.52    434.81    466.50    470.97
    329.41    864.96    720.85    204.40    743.61
    789.47    126.00    947.71    670.81    966.78
    966.95    308.29    759.04    496.87    648.28
    762.54    303.39    624.64     63.13    549.22
    244.51      2.82    310.28    141.07    387.99
    890.10    754.89    781.77    513.30    656.93