Tilt record from summit tiltmeter at Uwekahuna vault

Tilt record from summit tiltmeter at Uwekahuna vault, northwest edge of Kilauea caldera. Tilt is recorded in microradians; one radian equals 57.3 degrees. (For those unfamiliar with tilt units, one microradian is roughly the tilt created by inserting a dime beneath the end of one-kilometer-long board.) The tilt record shows the abrupt inflation and deflation of Kilauea's summit area on the evening of Jan. 14, two weeks of episodic summit inflation and deflation, and finally low tilt rates following the Jan. 27 earthquake swarm near Namakani Paio campground.