PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-13:58:00
G01     60.2           30.3                6.9 +/-    0.93      12.0 +/-    0.93  0.070 / 0.150
G06     180.5          14.7                9.1 +/-    2.07      22.9 +/-    2.07  0.060 / 0.130
G07     141.9          19.8                8.8 +/-    0.72      19.4 +/-    0.72  0.030 / 0.040
G11     47.7           21.5                5.4 +/-    0.69      11.5 +/-    0.69  0.030 / 0.050
G13     265.3          34.9                8.3 +/-    1.17      13.2 +/-    1.17  0.090 / 0.130
G15     296.2          15.8                5.3 +/-    4.72      13.0 +/-    4.72  0.080 / 0.170
G17     266.5          78.6                8.1 +/-    0.65       8.3 +/-    0.65  0.050 / 0.090
G19     233.1          52.7               10.0 +/-    0.98      12.2 +/-    0.98  0.060 / 0.070
G28     35.9           56.5                6.4 +/-    0.43       7.4 +/-    0.43  0.020 / 0.030
G30     143.2          54.5                8.0 +/-    0.96       9.5 +/-    0.96  0.030 / 0.030