X1 = 199.491133503000
x2 = -1599.07066068000
x3 = 1399.57952717000
x4 = 801.106126665000
x5 = 2001.19452034000
x6 = 400.553063333000
x7 = -1800.13259051000
x8 = 1600.64145700000
x9 = -1000.59726017000
x10 = -1999.62372401000
x11 = -190.066355542000
x12 = 600.044196836000
x13 = -1.57079632679000
x14 = 1198.51759734000
x15 = 1800.13259051000
x16 = -600.044196836000
x17 = -398.982267006000
x18 = -799.535330339000
x19 = -1398.00873085000
x20 = 1003.73885282000
x21 = -1201.65919000000