A method for calculating service redundancy of a wireless network is provided. A storage capacitor wire including a storage capacitor electrode line extending in the transverse direction and a storage electrode connected to the storage capacitor electrode line and located at the edges of a pixel area is formed. The combination of the photoinitiators bisphenylphosphine oxide and 1-hydroxycyclohexylphenylketone is especially effective for this purpose. The invention also relates to a meter design and to a sensor device designed to fit into the narrow annulus of a subsurface production well. A floating gate transistor is formed on the second OD region.