PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-18:43:00
G01     319.8          16.2                7.8 +/-    1.96      18.8 +/-    1.96  0.130 / 0.370
G08     257.3          14.4                9.5 +/-    1.60      24.0 +/-    1.60  0.110 / 0.220
G10     76.6           53.8                9.6 +/-    0.67      11.5 +/-    0.67  0.040 / 0.040
G11     304.0          22.9                8.9 +/-    1.40      18.2 +/-    1.40  0.030 / 0.040
G14     291.2          70.6               10.3 +/-    0.69      10.8 +/-    0.69  0.070 / 0.250
G18     304.8          41.5                8.4 +/-    0.56      12.0 +/-    0.56  0.080 / 0.250
G20     103.5          30.5               10.7 +/-    0.52      18.6 +/-    0.52  0.070 / 0.050
G27     227.8          10.9               11.3 +/-    4.37      30.8 +/-    4.37  0.070 / 0.050
G31     179.4          36.5               12.1 +/-    1.78      18.6 +/-    1.78  0.180 / 0.330
G32     0.6            69.6                9.9 +/-    0.88      10.5 +/-    0.88  0.150 / 0.370