here are results for gcd casts. would be nice to have this data for channels (diagnostic scan/ lightning strike)

using data from

https://docs.google.com/spreadsheets...gid=1526455495
summary:

https://pasteboard.co/IzZn0PG.png
Two-Sample T-Test and CI: 0, 862

Two-sample T for 0 vs 862

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

862 20 1.4988 0.0170 0.0038

Difference = mu (0) - mu (862)

Estimate for difference: 0.0478

95% CI for difference: (0.0233, 0.0722)

T-Test of difference = 0 (vs not =): T-Value = 4.04 P-Value = 0.001 DF = 23

Boxplot of 0, 862

Two-Sample T-Test and CI: 0, 755

Two-sample T for 0 vs 755

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

755 21 1.50029 0.00901 0.0020

Difference = mu (0) - mu (755)

Estimate for difference: 0.0463

95% CI for difference: (0.0226, 0.0699)

T-Test of difference = 0 (vs not =): T-Value = 4.08 P-Value = 0.001 DF = 20

Boxplot of 0, 755

Two-Sample T-Test and CI: 0, 1293

Two-sample T for 0 vs 1293

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

1293 22 1.4120 0.0366 0.0078

Difference = mu (0) - mu (1293)

Estimate for difference: 0.1346

95% CI for difference: (0.1069, 0.1623)

T-Test of difference = 0 (vs not =): T-Value = 9.88 P-Value = 0.000 DF = 34

Two-Sample T-Test and CI: 0, 1294

Two-sample T for 0 vs 1294

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

1294 22 1.4133 0.0341 0.0073

Difference = mu (0) - mu (1294)

Estimate for difference: 0.1333

95% CI for difference: (0.1062, 0.1604)

T-Test of difference = 0 (vs not =): T-Value = 10.00 P-Value = 0.000 DF = 33

Two-sample T for 0 vs 1724

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

1724 22 1.4030 0.0213 0.0045

Difference = mu (0) - mu (1724)

Estimate for difference: 0.1435

95% CI for difference: (0.1187, 0.1683)

T-Test of difference = 0 (vs not =): T-Value = 11.90 P-Value = 0.000 DF = 25

Two-sample T for 0 vs 2155

N Mean StDev SE Mean

0 20 1.5465 0.0500 0.011

2155 22 1.4012 0.0222 0.0047

Difference = mu (0) - mu (2155)

Estimate for difference: 0.1453

95% CI for difference: (0.1203, 0.1703)

T-Test of difference = 0 (vs not =): T-Value = 11.97 P-Value = 0.000 DF = 25

Two-sample T for 862 vs 755

N Mean StDev SE Mean

862 20 1.4988 0.0170 0.0038

755 21 1.50029 0.00901 0.0020

Difference = mu (862) - mu (755)

Estimate for difference: -0.00149

95% CI for difference: (-0.01027, 0.00730)

T-Test of difference = 0 (vs not =): T-Value = -0.35 P-Value = 0.732 DF = 28

Two-sample T for 862 vs 1293

N Mean StDev SE Mean

862 20 1.4988 0.0170 0.0038

1293 22 1.4120 0.0366 0.0078

Difference = mu (862) - mu (1293)

Estimate for difference: 0.08685

95% CI for difference: (0.06912, 0.10457)

T-Test of difference = 0 (vs not =): T-Value = 10.01 P-Value = 0.000 DF = 30

Two-sample T for 862 vs 1724

N Mean StDev SE Mean

862 20 1.4988 0.0170 0.0038

1724 22 1.4030 0.0213 0.0045

Difference = mu (862) - mu (1724)

Estimate for difference: 0.09575

95% CI for difference: (0.08378, 0.10773)

T-Test of difference = 0 (vs not =): T-Value = 16.17 P-Value = 0.000 DF = 39

Two-sample T for 862 vs 2155

N Mean StDev SE Mean

862 20 1.4988 0.0170 0.0038

2155 22 1.4012 0.0222 0.0047

Difference = mu (862) - mu (2155)

Estimate for difference: 0.09757

95% CI for difference: (0.08527, 0.10988)

T-Test of difference = 0 (vs not =): T-Value = 16.05 P-Value = 0.000 DF = 38

Two-sample T for 862 vs 3017

N Mean StDev SE Mean

862 20 1.4988 0.0170 0.0038

3017 22 1.3983 0.0139 0.0030

Difference = mu (862) - mu (3017)

Estimate for difference: 0.10048

95% CI for difference: (0.09070, 0.11027)

T-Test of difference = 0 (vs not =): T-Value = 20.82 P-Value = 0.000 DF = 36

Two-sample T for 1293 vs 3017

N Mean StDev SE Mean

1293 22 1.4120 0.0366 0.0078

3017 22 1.3983 0.0139 0.0030

Difference = mu (1293) - mu (3017)

Estimate for difference: 0.01364

95% CI for difference: (-0.00350, 0.03078)

T-Test of difference = 0 (vs not =): T-Value = 1.64 P-Value = 0.114 DF = 26

Two-sample T for 1724 vs 3017

N Mean StDev SE Mean

1724 22 1.4030 0.0213 0.0045

3017 22 1.3983 0.0139 0.0030

Difference = mu (1724) - mu (3017)

Estimate for difference: 0.00473

95% CI for difference: (-0.00625, 0.01571)

T-Test of difference = 0 (vs not =): T-Value = 0.87 P-Value = 0.388 DF = 36

Two-sample T for 2155 vs 3017

N Mean StDev SE Mean

2155 22 1.4012 0.0222 0.0047

3017 22 1.3983 0.0139 0.0030

Difference = mu (2155) - mu (3017)

Estimate for difference: 0.00291

95% CI for difference: (-0.00843, 0.01425)

T-Test of difference = 0 (vs not =): T-Value = 0.52 P-Value = 0.606 DF = 35

Two-sample T for 2155 vs 3448

N Mean StDev SE Mean

2155 22 1.4012 0.0222 0.0047

3448 23 1.3080 0.0270 0.0056

Difference = mu (2155) - mu (3448)

Estimate for difference: 0.09327

95% CI for difference: (0.07843, 0.10811)

T-Test of difference = 0 (vs not =): T-Value = 12.68 P-Value = 0.000 DF = 42