PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/12-09:28:10
G02     203.0          30.1                5.1 +/-    1.48       8.8 +/-    1.48  0.120 / 0.090
G06     163.7          65.8                5.1 +/-    0.60       5.5 +/-    0.60  0.060 / 0.070
G12     305.9          13.6                3.6 +/-    2.90       9.2 +/-    2.90  0.240 / 0.320
G17     35.6           49.3                4.1 +/-    1.27       5.2 +/-    1.27  0.180 / 0.260
G19     345.7          67.8                4.3 +/-    0.46       4.6 +/-    0.46  0.040 / 0.030
G24     297.5          39.5                3.5 +/-    6.21       5.1 +/-    6.21  0.060 / 0.040
G28     98.6           34.5                5.6 +/-    0.96       8.9 +/-    0.96  0.050 / 0.020