19912620215000 37.81887 -122.38924 L191NC 12KHZ 202 ON 19912620215100 37.81887 -122.38924 L191NC 12KHZ 202 START OF ROLL 1 19912620600000 37.78427 -122.59692 L191NC 12KHZ 202 OFF 19912621433000 37.67312 -122.56334 L191NC 12KHZ OBS2 ON 19912622136000 37.42385 -123.04675 L191NC 12KHZ OBS2 OFF