PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-13:13:10
G02     202.4          20.1                7.2 +/-    1.83      15.7 +/-    1.83  0.090 / 0.240
G06     167.3          58.6                5.6 +/-    1.00       6.4 +/-    1.00  0.090 / 0.260
G12     302.5          10.6               -8.1 +/-    8.24     -22.3 +/-    8.24  0.080 / 0.260
G13     224.4          10.8                3.5 +/-    2.78       9.7 +/-    2.78  0.120 / 0.170
G17     27.4           56.0                3.8 +/-    0.34       4.4 +/-    0.34  0.090 / 0.110
G24     305.9          34.0                3.4 +/-    0.72       5.5 +/-    0.72  0.080 / 0.100
G28     91.2           38.5                5.7 +/-    0.56       8.5 +/-    0.56  0.040 / 0.040
G30     158.0          12.8                6.0 +/-    2.04      15.7 +/-    2.04  0.050 / 0.040