Harmonic Analysis of Precipitation Time Series in Lake Tana Basin, Ethiopia

Table 2

Illustration of the mechanics of using (2), (3), and (5)–(13) to estimate the parameters of a fundamental harmonic for each station.

(a) Debre Tabor
Serial number
	406.88			−203.44	−352.36
	389.11			−336.97	−194.56
	183.86			0.00	−183.86
	165.34			−165.34	0.00
5	76.86			38.43	−66.56
Sum	1222.05	−1.866	−3.232	−667.32	−798.34
1			67.67		2289.6	4.47
2	−90.07		128.03		8195.9	15.99
3	−90.07		151.35		11,453.2	22.35
4	−117.63	−121.63	169.21		14,315.3	27.93
5	−111.22	−132.72	173.16		14,992.2	29.26
(b) Bahir Dar
Serial number
	417.04			−361.57	−207.69
	381.08			−191.30	−329.63
	195.84			0.00	−195.84
	184.91			−184.91	0.00
5	92.16			45.90	−79.90
Sum	1271.39	−1.871	−3.23	−691.88	−813.06
1				0.52
2	−91.14			0.78
3	−91.14			0.93
4	−121.95	−122.20		0.79
5	−114.30	−135.52		0.87
(c) Gondar
Serial number
	288.34	−0.8660	−0.5000	−249.70	−144.17
	282.9	−0.5000	−0.8660	−141.45	−244.99
	154.35	−1	0.00	−154.35	0.00
	107.51	−0.00	−1	0.00	−107.51
5	82.02	−0.8660	0.5000	−71.03	41.01
Sum	915.12	−3.232	−1.866	−616.53	−455.66
1	−41.62	−24.03	48.06	0.17	1154.83	4.22
2	−65.20	−64.86	91.97	0.78	4228.93	15.46
3	−90.93	−64.86	111.69	0.62	6237.54	22.81
4	−90.93	−82.78	122.97	0.74	7560.40	27.65
5	−102.77	−75.94	127.78	0.64	8164.28	29.86
(d) Dangila
Serial number
	382.32	−0.5000	−0.8660	−191.16	−331.09
	362.28	−0.8660	−0.5000	−313.73	−181.14
	261.57	−1	0.00	−261.57	0.00
	254.58	0.00	−1	0.00	−254.58
5	150.99	−0.8660	0.5000	−130.76	75.50
Sum	1411.74	−3.232	−1.866	−897.22	−691.31
1	−31.86	−55.18	63.72	1.05	2029.95	3.68
2	−84.15	−85.37	119.87	0.79	7184.63	13.03
3	−127.75	−85.37	153.65	0.59	11,804.05	21.40
4	−127.75	−127.80	180.70	0.79	16,326.45	29.60
5	−149.46	−115.22	188.72	0.66	17,806.97	32.29