def read_line(file_name):
    with open(file_name) as f:
        for line in f:
            line_array.append([float(line.split()[0]), float(line.split()[2])])
def read_line(file_name):
    with open(file_name) as f:
        for line in f:
            line_array.append([float(line.split()[0]), float(line.split()[2])])