PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-17:27:20
G02     226.4          66.9                9.9 +/-    1.14      10.7 +/-    1.14  0.060 / 0.140
G06     44.0           63.4                9.3 +/-    0.48      10.3 +/-    0.48  0.090 / 0.120
G12     322.2          49.2                8.9 +/-    0.75      11.4 +/-    0.75  0.030 / 0.050
G17     65.6           25.8                8.9 +/-    1.84      17.2 +/-    1.84  0.040 / 0.040
G19     46.5           45.8                9.5 +/-    1.10      12.7 +/-    1.10  0.040 / 0.040
G24     251.3          38.5               12.1 +/-    1.72      18.0 +/-    1.72  0.030 / 0.040