PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-15:42:50
G02     226.2          66.2               10.2 +/-    1.10      11.1 +/-    1.10  0.040 / 0.100
G06     44.2           65.2                9.2 +/-    0.44      10.1 +/-    0.44  0.050 / 0.100
G12     320.3          43.8                8.9 +/-    0.68      12.3 +/-    0.68  0.050 / 0.050
G17     62.2           29.7                9.8 +/-    0.90      17.2 +/-    0.90  0.040 / 0.050
G19     50.1           42.0                9.5 +/-    1.26      13.3 +/-    1.26  0.030 / 0.030
G24     255.0          38.3               10.8 +/-    2.17      16.1 +/-    2.17  0.030 / 0.030
G28     126.6          12.8                9.5 +/-    1.59      24.9 +/-    1.59  0.040 / 0.060