Table:
Electrode Type	Linear Range(μM)	Linear Regression EquationY (μA) = A + BX (μM)	R2	LOD (μM)
A	B
0.3 mg·mL−1 HRP/ SWCNT/PEI at GCE (Φ 1mm)	18.18–79.01	−0.003	−6.108 x10-4	0.978	6.061 ± 0.002
0.6 mg·mL−1 HRP/ SWCNT/PEI at GCE (Φ 1mm)	4.08–79.01	−0.023	−0.002	0.951	1.365 ± 0.013
0.3 mg·mL−1 HRP/ SWCNT/PEI at GCE(Φ 4mm)	23.46–79.01	−0.158	−0.020	0.965	7.823 ± 0.099
0.6 mg·mL−1 HRP/ SWCNT/PEI at GCE(Φ 4mm)	6.45–79.01	−0.186	−0.008	0.913	2.158 ± 0.068
0.48 mg·mL−1 HRP/SWCNT/Ppy at SPE	24.27–118.06	−0.070	−0.007	0.938	8.096 ± 0.102

Parse the following content of the illustration in markdown code: | <ROWSPAN=3> Electrode Type | <ROWSPAN=3> Linear Range(μM) | <COLSPAN=2> Linear Regression EquationY (μA) = A + BX (μM) | <ROWSPAN=3> R2 | <ROWSPAN=3> LOD (μM) | 
 | A | B | 
 | --- | --- | --- | --- | --- | --- | 
 | 0.3 mg·mL−1 HRP/ SWCNT/PEI at GCE (Φ 1mm) | 18.18–79.01 | −0.003 | −6.108 x10-4 | 0.978 | 6.061 ± 0.002 | 
 | 0.6 mg·mL−1 HRP/ SWCNT/PEI at GCE (Φ 1mm) | 4.08–79.01 | −0.023 | −0.002 | 0.951 | 1.365 ± 0.013 | 
 | 0.3 mg·mL−1 HRP/ SWCNT/PEI at GCE(Φ 4mm) | 23.46–79.01

| −0.158 | −0.020 | 0.965 | 7.823 ± 0.099 | 
 | 0.6 mg·mL−1 HRP/ SWCNT/PEI at GCE(Φ 4mm) | 6.45–79.01 | −0.186 | −0.008 | 0.913 | 2.158 ± 0.068 | 
 | 0.48 mg·mL−1 HRP/SWCNT/Ppy at SPE | 24.27–118.06 | −0.070 | −0.007 | 0.938 | 8.096 ± 0.102 |