portable waterproof electronic measuring and timing instruments used to monitor environmental conditions, namely, wind speed, temperature, relative humidity, heat stress index, dew point and altitude; soaring data instrument, namely, a display unit, remote control, GPS antenna, wiring board and hookup wires, panel-mounted USB/Remote extension, extension cords, on-panel mounting hardware and instructions, all sold together as a unit; electrical navigational instruments; electronic devices, namely, computer hardware for locating and tracking programmed to use global positioning systems (GPS) and personal digital assistant (PDA) systems; protective carrying cases specially adapted for global positioning system (GPS) apparatus and personal digital assistants (PDA); computer software for monitoring altitude, glider polar, wind and terrain, and air space featuring a movable map with selected layers; computer software for navigation; computer software for data processing and operating programs for soaring data instruments; online downloadable computer software for operating a soaring data instrument