I made a map which plots my measured locations of the NN array L4C sensors to scale against a LVEA layout drawing from D970308. Each location has a number indicating the channel number of that sensor. The channels are H1:NGN-CS_L4C_Z_#_OUT, where # is the number of the sensor on the map. It's hard to quantify the uncertainties in my position measurements, but the positions look correct by eye. I'll update this map when I place more sensors next week.