PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-14:12:50
G01     112.3          22.5               12.6 +/-    1.22      26.1 +/-    1.22  0.030 / 0.030
G07     97.4           62.2               11.6 +/-    0.58      12.9 +/-    0.58  0.030 / 0.030
G08     42.6           24.5                8.9 +/-    1.90      17.6 +/-    1.90  0.110 / 0.210
G09     174.8          17.3               10.6 +/-    0.71      25.0 +/-    0.71  0.100 / 0.160
G11     95.9           42.1               12.4 +/-    1.05      17.5 +/-    1.05  0.050 / 0.090
G13     313.4          25.2               10.4 +/-    2.64      20.2 +/-    2.64  0.050 / 0.070
G17     203.8          32.1               13.0 +/-    1.46      21.7 +/-    1.46  0.030 / 0.040
G18     86.0           23.2                9.8 +/-    1.62      20.0 +/-    1.62  0.030 / 0.040
G28     306.9          59.8               10.3 +/-    1.12      11.7 +/-    1.12  0.040 / 0.050
G30     0.9            74.2               12.3 +/-    0.98      12.8 +/-    0.98  0.040 / 0.060