PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-15:42:40
G01     43.7           19.4                8.0 +/-    1.05      17.9 +/-    1.05  0.140 / 0.300
G06     175.9          34.4               11.3 +/-    1.07      18.1 +/-    1.07  0.120 / 0.310
G13     243.8          25.1               10.5 +/-    1.65      20.4 +/-    1.65  0.080 / 0.190
G15     278.0          13.6                9.4 +/-    1.16      24.2 +/-    1.16  0.080 / 0.200
G17     359.2          72.5               10.2 +/-    0.60      10.7 +/-    0.60  0.070 / 0.100
G19     268.7          68.5                9.7 +/-    0.96      10.3 +/-    0.96  0.070 / 0.100
G24     318.4          13.9                9.4 +/-    1.94      24.1 +/-    1.94  0.060 / 0.040
G28     65.7           48.9                9.5 +/-    0.43      12.1 +/-    0.43  0.040 / 0.040
G30     153.5          34.3                9.4 +/-    1.78      15.1 +/-    1.78  0.080 / 0.140