PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/18-10:58:00
G01     320.1          14.6                2.3 +/-    1.53       5.7 +/-    1.53  0.040 / 0.060
G08     265.0          14.9                5.7 +/-    2.21      14.3 +/-    2.21  0.040 / 0.050
G10     73.4           55.4                4.6 +/-    0.67       5.4 +/-    0.67  0.160 / 0.400
G11     307.8          19.8                4.9 +/-    1.37      10.8 +/-    1.37  0.140 / 0.260
G14     277.9          66.8                4.7 +/-    0.61       5.0 +/-    0.61  0.150 / 0.330
G18     308.4          36.5                4.3 +/-    2.29       6.6 +/-    2.29  0.140 / 0.340
G22     299.9          12.1                2.4 +/-    7.56       6.4 +/-    7.56  0.030 / 0.030
G27     226.2          11.0                3.0 +/-    3.37       8.1 +/-    3.37  0.030 / 0.040
G31     175.3          39.5                5.5 +/-    0.74       8.0 +/-    0.74  0.170 / 0.330
G32     3.5            69.2                6.3 +/-    0.40       6.7 +/-    0.40  0.190 / 0.370