PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-18:12:50
G01     97.6           29.8               12.9 +/-    1.13      22.6 +/-    1.13  0.080 / 0.360
G07     118.8          51.5               13.4 +/-    0.45      16.6 +/-    0.45  0.080 / 0.460
G08     42.0           14.5                9.2 +/-    2.58      23.2 +/-    2.58  0.020 / 0.040
G11     77.5           42.2               12.3 +/-    1.13      17.3 +/-    1.13  0.030 / 0.040
G13     301.6          33.4               11.0 +/-    2.47      18.1 +/-    2.47  0.040 / 0.030
G17     210.9          44.3               15.7 +/-    0.81      21.3 +/-    0.81  0.030 / 0.030
G18     70.9           24.8               12.0 +/-    1.32      23.6 +/-    1.32  0.060 / 0.100
G19     212.2          19.6               14.8 +/-    1.93      32.8 +/-    1.93  0.080 / 0.080
G28     336.5          61.9               11.7 +/-    0.38      13.1 +/-    0.38  0.100 / 0.130
G30     77.0           79.0               13.4 +/-    0.94      13.7 +/-    0.94  0.090 / 0.150