PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-12:28:10
G02     202.4          26.2                2.2 +/-    1.70       4.2 +/-    1.70  0.120 / 0.150
G06     163.6          63.1                4.2 +/-    0.36       4.6 +/-    0.36  0.070 / 0.110
G12     303.6          11.3               -5.0 +/-   11.97     -13.5 +/-   11.97  0.040 / 0.040
G17     27.4           55.6                3.0 +/-    1.00       3.5 +/-    1.00  0.050 / 0.030
G19     351.6          68.1                2.8 +/-    0.62       3.0 +/-    0.62  0.040 / 0.030
G24     304.5          33.6                2.1 +/-    1.82       3.4 +/-    1.82  0.030 / 0.040
G28     91.8           41.1                3.9 +/-    0.88       5.6 +/-    0.88  0.040 / 0.030