各位i高手帮我分析分析这两张图！！谢谢了

Test Results for Xbar Chart of Si119

TEST 1. One point more than 3.00 standard deviations from center line.
Test Failed at points: 2, 8

TEST 5. 2 out of 3 points more than 2 standard deviations from center line (on
one side of CL).
Test Failed at points: 8, 17, 18

TEST 6. 4 out of 5 points more than 1 standard deviation from center line (on
one side of CL).
Test Failed at points: 18, 19, 20


Test Results for R Chart of Si119

TEST 1. One point more than 3.00 standard deviations from center line.
Test Failed at points: 2

TEST 2. 9 points in a row on same side of center line.
Test Failed at points: 19, 20