The following consecutive readings were taken with a level on continuously sloping ground at a common interval of 20 m. 0.420, 1.115, 2.265, 2.900, 3.615, 0.535, 1.470, 2.815, 3.505, 4.445, 0.605, 1.925, 2.885. The last station has an elevation of 155.272 m. Rule out a page of level book and enters the readings.