Terrain Height Map Generated from raycast array[Help]

so i have a problem converting my custom data that is essentially already what i need it to be , so i have almost converted a my data which consists of 2d array of Raycast hits getting the height/distance from plane to a mesh that is parallel to plane show here on the x axis (blue = plane,green raycasts directing downwards, black = mesh exported from blender) so the Raycast gets the distance then it is stored in 2d float array then i want to use that float array for a terrain but my out put is not as expected ,this is what i got it would be apprieted if any advice or if you need anything else let me know.