{
"xlabel":"Gestational age (w)",
"ylabel":"Head circumference (mm)",
"x":[12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42],
"y":[0,50,100,150,200,250,300,350,400,450],
"y95percent":[80.05,107.48,133.5,158.11,181.32,203.12,223.51,242.50,260.09,276.27,291.04,304.41,316.37,326.92,336.08,343.82],
"y0percent":[79.01,105.13,129.90,153.31,175.35,196.05,215.39,233.37,249.99,265.25,279.16,291.72,302.91,312.75,321.23,328.36],
"y5percent":[75.05,100.43,124.46,147.13,168.44,188.38,206.97,224.20,240.07,254.58,267.74,279.53,289.96, 299.04,306.76,313.11]
}