What are these percentiles?

[Nam095]

I had my 20 week scan today and they gave me this sheet with the measurements of the baby. I don’t understand what the placements of the dots mean, the majority are in the middle of the scales so does that mean 50th percentile? I didn’t take notice of the results until I was already in the car home so didn’t ask the sonographer

Yes most of them are the 50th percentile

I the line in the centre of the scale indicates the 50th percentile, and the black diamond shows where your babies measurements fall. So yes as you’ve said most of them are at or around the 50th percentile.