PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-15:42:30
G02     207.2          40.7               10.1 +/-    1.34      14.6 +/-    1.34  0.070 / 0.080
G06     125.9          77.3               10.8 +/-    0.58      11.0 +/-    0.58  0.060 / 0.080
G12     313.5          26.5                7.4 +/-    1.40      14.1 +/-    1.40  0.070 / 0.120
G17     44.9           41.7                8.8 +/-    0.75      12.4 +/-    0.75  0.100 / 0.130
G19     10.4           62.0                8.9 +/-    0.79       9.9 +/-    0.79  0.030 / 0.030
G24     285.6          42.3                7.8 +/-    1.10      10.9 +/-    1.10  0.030 / 0.030
G28     110.1          25.6               11.0 +/-    1.68      21.3 +/-    1.68  0.040 / 0.040