PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-14:27:50
G02     224.4          63.4                7.2 +/-    0.56       7.9 +/-    0.56  0.060 / 0.090
G06     45.2           66.2                4.8 +/-    0.41       5.2 +/-    0.41  0.120 / 0.080
G12     321.4          46.3                3.0 +/-    0.77       3.9 +/-    0.77  0.040 / 0.060
G17     64.5           26.2                5.1 +/-    0.74       9.7 +/-    0.74  0.050 / 0.050
G19     43.2           47.9                4.1 +/-    0.49       5.3 +/-    0.49  0.040 / 0.040
G24     252.0          39.2                6.3 +/-    1.65       9.3 +/-    1.65  0.040 / 0.030