PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-18:28:00
G02     207.5          39.9               12.4 +/-    0.62      18.0 +/-    0.62  0.050 / 0.090
G06     132.5          77.5               10.5 +/-    0.58      10.7 +/-    0.58  0.060 / 0.080
G12     313.1          24.0                8.5 +/-    1.01      17.1 +/-    1.01  0.080 / 0.070
G17     46.6           40.3                8.7 +/-    0.99      12.6 +/-    0.99  0.070 / 0.060
G19     22.6           57.9               10.2 +/-    1.43      11.8 +/-    1.43  0.070 / 0.110
G24     289.0          40.7               12.8 +/-    4.03      18.4 +/-    4.03  0.080 / 0.110
G28     111.3          24.6                9.9 +/-    1.76      19.6 +/-    1.76  0.060 / 0.070