7 0.478515625 0.53125 0.8095703125 0.7978515625
15 0.2744140625 0.3291015625 0.33203125 0.3623046875
15 0.8740234375 0.3623046875 0.232421875 0.3515625
15 0.9296875 0.3408203125 0.1357421875 0.4697265625