PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-14:57:40
G02     205.9          36.6               11.0 +/-    1.00      17.0 +/-    1.00  0.100 / 0.090
G06     140.1          74.9               11.5 +/-    0.60      11.9 +/-    0.60  0.080 / 0.070
G12     311.7          23.8                8.1 +/-    2.27      16.2 +/-    2.27  0.090 / 0.130
G17     42.1           43.9                8.0 +/-    0.33      11.0 +/-    0.33  0.070 / 0.150
G19     2.6            64.2                8.5 +/-    0.86       9.3 +/-    0.86  0.040 / 0.030
G24     290.3          41.4                8.0 +/-    0.96      11.3 +/-    0.96  0.030 / 0.030
G28     106.8          28.1                8.8 +/-    1.51      16.1 +/-    1.51  0.040 / 0.040