PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-00:57:40
G02     200.5          25.3                8.5 +/-    1.99      16.4 +/-    1.99  0.110 / 0.100
G06     174.9          54.1                9.9 +/-    1.15      11.9 +/-    1.15  0.110 / 0.120
G13     223.6          10.7                9.6 +/-    2.09      26.4 +/-    2.09  0.050 / 0.030
G17     28.3           55.2                7.5 +/-    1.40       8.9 +/-    1.40  0.040 / 0.030
G19     333.9          70.1                6.4 +/-    0.48       6.8 +/-    0.48  0.190 / 0.450
G24     305.6          34.0                6.3 +/-    3.09      10.2 +/-    3.09  0.210 / 0.360
G28     89.8           40.4                7.5 +/-    1.06      10.9 +/-    1.06  0.050 / 0.050
G30     157.4          10.7                7.1 +/-    8.40      19.7 +/-    8.40  0.070 / 0.090