PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-10:42:50
G01     125.4          12.9                2.2 +/-    2.76       5.7 +/-    2.76  0.040 / 0.050
G07     59.5           69.1                3.0 +/-    0.37       3.2 +/-    0.37  0.040 / 0.040
G08     47.9           35.7                0.9 +/-    0.52       1.4 +/-    0.52  0.040 / 0.030
G09     175.8          31.4                3.8 +/-    1.29       6.5 +/-    1.29  0.040 / 0.040
G11     114.2          36.5                3.9 +/-    1.04       6.0 +/-    1.04  0.110 / 0.340
G13     320.5          13.6               -0.4 +/-    1.79      -1.0 +/-    1.79  0.170 / 0.380
G17     199.5          18.5                2.5 +/-    1.30       5.7 +/-    1.30  0.150 / 0.370
G18     101.1          17.5                2.5 +/-    1.74       5.8 +/-    1.74  0.130 / 0.340
G28     278.9          53.7                1.6 +/-    0.96       1.9 +/-    0.96  0.090 / 0.290
G30     332.7          60.7                1.5 +/-    0.73       1.6 +/-    0.73  0.080 / 0.320