PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-18:57:40
G02     219.4          59.6               10.3 +/-    0.94      11.8 +/-    0.94  0.080 / 0.100
G06     50.6           70.7               10.5 +/-    0.46      11.1 +/-    0.46  0.070 / 0.080
G12     320.3          40.9                9.0 +/-    1.04      13.0 +/-    1.04  0.060 / 0.070
G17     62.4           27.7                8.4 +/-    1.24      15.4 +/-    1.24  0.030 / 0.070
G19     46.2           45.0                9.0 +/-    1.27      12.2 +/-    1.27  0.050 / 0.110
G24     262.8          40.6               12.1 +/-    0.93      17.4 +/-    0.93  0.050 / 0.110
G28     125.5          10.5               10.2 +/-    2.77      28.1 +/-    2.77  0.030 / 0.040