15 -17.5 0.36886
15 -17.5 0.406723
15.25 -17.5 0.339509
15.25 -17.5 0.424257
15.5 -17.5 0.30709
15.5 -17.5 0.440744
16.75 -17.5 0.146312
16.75 -17.5 0.497127
16.75 -17.5 0.074558
答案:
15 -17.5 0.38779
15.25 -17.5 0.381883
15.5 -17.5 0.373917
16.75 -17.5 0.239332333