Analysis of Nonstationary Change of Annual Maximum Level Records in the Yangtze River Estuary

Table 1

Efficiencies of different tests for detecting change-point under different compositions.

Standard deviation of random component	Shift in mean	Ratio of shift in mean to standard deviation of random component	Efficiency of test for detecting change-point
			MT test	MRS test	Pettitt test	SQMK test
0.350	0.350	1	25.6	29.2	32.9	11.0
0.175	0.175	1	26.1	29.7	33.4	11.1
0.525	0.525	1	26.2	29.6	33.3	11.2
0.350	0.700	2	65.1	65.8	67.1	18.9
0.175	0.350	2	65.5	66.0	67.3	19.1
0.525	1.050	2	65.7	66.0	67.3	19.1
0.350	1.050	3	87.5	86.3	86.8	21.2
0.175	0.525	3	88.5	86.8	87.3	22.0
0.525	1.575	3	88.4	86.9	87.3	21.3
0.175	0.700	4	94.9	95.8	96.0	22.0
0.175	1.050	6	98.9	99.7	99.7	22.2