PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-02:27:50
G01     46.7           22.7                4.3 +/-    0.57       8.9 +/-    0.57  0.050 / 0.070
G06     178.4          28.1                6.1 +/-    1.47      11.2 +/-    1.47  0.040 / 0.070
G11     44.5           13.7                2.4 +/-    0.99       6.1 +/-    0.99  0.030 / 0.030
G13     246.8          27.8                4.6 +/-    1.47       8.4 +/-    1.47  0.030 / 0.040
G15     278.6          15.1                5.4 +/-    1.78      13.4 +/-    1.78  0.070 / 0.110
G17     327.8          76.9                5.9 +/-    0.78       6.0 +/-    0.78  0.070 / 0.130
G19     255.7          63.9                4.9 +/-    1.27       5.4 +/-    1.27  0.080 / 0.130
G24     318.9          11.1               -7.5 +/-   30.49     -20.5 +/-   30.49  0.070 / 0.140
G28     60.0           50.6                5.4 +/-    0.98       6.7 +/-    0.98  0.060 / 0.210
G30     150.5          32.6                8.4 +/-    0.89      14.0 +/-    0.89  0.060 / 0.210