PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-14:27:40
G02     202.7          24.7                8.6 +/-    1.78      17.0 +/-    1.78  0.060 / 0.100
G06     162.1          63.6               10.5 +/-    0.89      11.6 +/-    0.89  0.070 / 0.100
G12     305.3          14.8                4.2 +/-    1.90      10.5 +/-    1.90  0.070 / 0.250
G17     31.7           52.6                7.7 +/-    0.78       9.4 +/-    0.78  0.090 / 0.280
G19     332.6          69.2                7.7 +/-    0.54       8.1 +/-    0.54  0.040 / 0.030
G24     303.2          35.9                5.6 +/-    2.30       8.8 +/-    2.30  0.030 / 0.030
G28     95.4           35.7                8.1 +/-    1.57      12.7 +/-    1.57  0.040 / 0.030