42 Design, calibration, and quality control monitoring for others of seismological instruments, computer peripheral devices for seismological instruments, computer systems in the field of seismology and of seismic monitoring systems; design, calibration, and quality control monitoring for others of structural monitoring systems; design, calibration, and quality control monitoring for others of seismic monitoring systems for nuclear power plants; design, calibration, quality control monitoring and off-site data backup for others of earthquake monitoring systems, induced seismicity systems, volcano monitoring systems, structural health monitoring systems, and nuclear power plant monitoring systems; quality control for others in the nature of seismic qualification testing and reporting; scientific and technological services, namely, interpretation of seismic data in the field of seismology