PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-17:12:40
G01     40.8           15.8                9.9 +/-    2.30      24.0 +/-    2.30  0.140 / 0.210
G06     173.1          41.4               13.1 +/-    1.29      18.6 +/-    1.29  0.350 / 0.290
G13     236.8          21.5               13.7 +/-    2.13      29.0 +/-    2.13  0.080 / 0.120
G15     272.4          11.7               14.4 +/-    2.60      38.8 +/-    2.60  0.070 / 0.120
G17     1.9            70.1               11.4 +/-    0.37      12.0 +/-    0.37  0.320 / 0.300
G19     274.2          67.2               12.8 +/-    1.04      13.8 +/-    1.04  0.380 / 0.260
G24     315.9          20.9                9.6 +/-    4.18      20.6 +/-    4.18  0.090 / 0.250
G28     72.6           46.5               11.8 +/-    1.03      15.6 +/-    1.03  0.090 / 0.310
G30     155.1          27.4               13.1 +/-    1.27      24.3 +/-    1.27  0.070 / 0.060