PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-12:12:50
G01     112.9          22.1                3.8 +/-    1.83       7.9 +/-    1.83  0.030 / 0.030
G07     96.4           62.4                5.0 +/-    0.95       5.5 +/-    0.95  0.030 / 0.020
G08     42.4           23.8                4.0 +/-    2.06       8.1 +/-    2.06  0.030 / 0.030
G09     174.4          17.2                3.6 +/-    2.18       8.6 +/-    2.18  0.030 / 0.030
G11     95.8           41.8                5.1 +/-    0.82       7.2 +/-    0.82  0.040 / 0.050
G13     313.7          24.9                3.3 +/-    1.49       6.5 +/-    1.49  0.050 / 0.060
G17     203.1          32.8                4.0 +/-    0.95       6.5 +/-    0.95  0.090 / 0.160
G18     86.3           22.9                2.1 +/-    1.97       4.3 +/-    1.97  0.090 / 0.130
G28     305.4          59.6                4.2 +/-    1.43       4.8 +/-    1.43  0.100 / 0.210
G30     356.8          73.3                4.5 +/-    0.48       4.7 +/-    0.48  0.080 / 0.230