PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-03:57:00
G02     46.5           43.2                4.9 +/-    1.03       6.7 +/-    1.03  0.030 / 0.050
G05     96.8           69.0                6.4 +/-    0.48       6.8 +/-    0.48  0.030 / 0.040
G12     191.5          53.6                7.9 +/-    0.91       9.6 +/-    0.91  0.030 / 0.040
G25     266.1          59.2                5.3 +/-    1.92       6.1 +/-    1.92  0.040 / 0.050
G29     320.9          44.5                4.3 +/-    1.11       5.9 +/-    1.11  0.030 / 0.030