Skip to main content
. Author manuscript; available in PMC: 2018 Mar 1.
Published in final edited form as: Cytometry A. 2017 Feb 3;91(3):232–249. doi: 10.1002/cyto.a.23052

Table 1.

The results of the fitting procedure for LED quadratic and linear fits and for Sph8 and TF6 bead fits. The upper part shows flowQB output results for c0, c1 and c2 and their standard errors on 8 channels of one LSR-II instrument (LSR-IIF, later run). The c2 P-value is included for the LED-quadratic fit. The lower section shows the ratio of standard errors to fit parameter values as percent (%). The “Bead CV0 Estimates” are the square roots of the corresponding c2 values expressed as percent (%). The “LED linear fit results expressed in terms of Spe units” section shows LED linear results expresses as BSpe and QI. The “ QI estimates for other methods relative to the LED linear QI” section at the bottom shows the similarity of the different estimators of the Spe scale.

LSR-IIF, later run Primary Fit Output Dye APC APC-Cy7 FITC PE PE-Cy7 PerCP-Cy55 V450 V500-C
LED quadratic c0 129 1047 284 164 152 284 1437 343
c0 StdErr 0.9 5.5 1.4 1.1 0.8 3.0 9.8 9.0
c1 4.09 11.23 1.09 1.21 3.03 5.35 1.59 2.67
c1 StdErr 0.0171 0.0659 0.0064 0.0074 0.0205 0.0459 0.0194 0.0679
c2 9.60E-7 8.19E-7 7.08E-7 10.1E-7 8.14E-7 1.21E-7 10.9E-7 17.8E-7
c2 StdErr 8.56E-7 41.17E-7 1.71E-7 2.60E-7 43.3E-7 22.7E-7 7.62E-7 24.4E-7
c2 P value 0.284 0.847 0.001 0.002 0.854 0.958 0.179 0.481
LED linear c0 129 1047 285 165 152 284 1441 344
c0 StdErr 0.9 5.2 2.0 1.5 0.7 2.8 10.0 8.7
c1 4.10 11.22 1.07 1.20 3.02 5.35 1.56 2.64
c1 StdErr 0.0143 0.0501 0.0072 0.0084 0.0150 0.0359 0.0134 0.0525
Sph8 c0 84 729 180 156 119 153 1055 237
c0 StdErr 67.2 176.1 6.1 4.7 5.3 8.8 291.0 33.8
c1 4.28 12.47 1.15 1.31 3.11 5.46 2.21 2.79
c1 StdErr 0.4519 1.5455 0.0398 0.0300 0.0805 0.1268 0.4043 0.1359
c2 42.062E-5 22.465E-5 22.862E-5 17.7E-5 19.714E-5 22.06E-5 7.20E-5 5.52E-5
c2 StdErr 50.8E-6 91.0E-6 8.39E-6 4.38E-6 12.8E-6 12.0E-6 17.5E-6 7.16E-6
TF6 c0 70 913 278 193 131 187 1361 293
c0 StdErr 41.3 28.9 9.0 7.9 4.2 8.8 238.3 34.9
c1 4.65 11.10 1.25 1.42 2.97 5.29 1.91 2.78
c1 StdErr 0.2988 0.2386 0.0386 0.0565 0.0850 0.1619 0.5809 0.3017
c2 8.81E-5 17.696E-5 8.48E-5 16.875E-5 25.717E-5 18.084E-5 50.003E-5 59.019E-5
c2 StdErr 16.6E-6 12.3E-6 2.93E-6 6.41E-6 18.0E-6 11.5E-6 68.9E-6 70.1E-6
RelStdErr for the fit parameters APC APC-Cy7 FITC PE PE-Cy7 P PerCP-Cy55 V450 V500-C

LED quadratic c0 Relative StdErr (%) 0.66 0.52 0.49 0.65 0.51 1.05 0.68 2.62

LED linear c0 Relative StdErr (%) 0.66 0.50 0.71 0.91 0.48 1.00 0.69 2.53

Sph8 c0 Relative StdErr (%) 80.04 24.15 3.38 2.99 4.45 5.79 27.57 14.24

TF6 c0 Relative StdErr (%) 59.01 3.17 3.25 4.11 3.22 4.68 17.51 11.91

LED quadratic c1 Relative StdErr (%) 0.42 0.59 0.59 0.61 0.68 0.86 1.23 2.55

LED linear c1 Relative StdErr (%) 0.35 0.45 0.67 0.70 0.50 0.67 0.86 1.99

Sph8 c1 Relative StdErr (%) 10.55 12.39 3.45 2.28 2.59 2.32 18.28 4.86

TF6 c1 Relative StdErr (%) 6.43 2.15 3.09 3.98 2.86 3.06 30.38 10.84

LED quadratic c2 Relative StdErr (%) 89.20 −509.22 −24.22 −25.68 −532.18 −1876.62 −69.69 −137.56

LED linear c2 Relative StdErr (%)

Sph8 c2 Relative StdErr (%) 12.07 40.51 3.67 2.48 6.49 5.45 24.27 12.98

TF6 c2 Relative StdErr (%) 18.84 6.95 3.46 3.80 7.00 6.36 13.78 11.88

Bead CVo Estimates APC APC-Cy7 FITC PE PE-Cy7 PerCP-Cy55 V450 V500-C

Sph8 c2 CVo (%)=100*sqrt(c2) 2.05 1.50 1.51 1.33 1.40 1.49 0.85 0.74

TF6 c2 CVo (%)=100*sqrt(c2) 0.94 1.33 0.92 1.30 1.60 1.34 2.24 2.43

LED linear fit results expressed in terms of Spe units

BSpe for LED lin (=c0/c12) 8   8   247  115  17   10   588  49  
QI for LED Iin (=1/c, or Spe/Signal Unit) 0.24 0.09 0.93 0.84 0.33 0.19 0.64 0.38

QI estimates for other methods relative to the LED linear QI

Other QI/LED [in QI(=LED Iin c1/Other c1) LED quadratic 1.00 1.00 0.98 0.99 1.00 1.00 0.99 0.99
Sph8 AE01 0.96 0.90 0.93 0.91 0.97 0.98 0.71 0.94
TF6 FC3MV 0.88 1.01 0.86 0.84 1.02 1.01 0.82 0.95