PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-12:12:30
G02     201.6          17.3                5.3 +/-    1.08      12.4 +/-    1.08  0.100 / 0.140
G06     169.5          54.6                5.3 +/-    0.88       6.4 +/-    0.88  0.130 / 0.170
G13     226.9          13.2                4.9 +/-    2.81      12.8 +/-    2.81  0.090 / 0.090
G17     24.1           58.5                4.6 +/-    0.46       5.3 +/-    0.46  0.090 / 0.110
G19     307.9          69.9                4.9 +/-    1.03       5.2 +/-    1.03  0.040 / 0.040
G24     308.4          31.9                3.3 +/-    1.15       5.6 +/-    1.15  0.050 / 0.050
G28     87.1           40.6                4.7 +/-    0.60       6.8 +/-    0.60  0.180 / 0.530
G30     157.7          16.1                4.7 +/-    2.10      11.4 +/-    2.10  0.270 / 0.540