PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-01:58:10
G02     209.5          52.0                9.0 +/-    0.61      11.0 +/-    0.61  0.050 / 0.070
G06     131.2          80.7                6.4 +/-    0.64       6.5 +/-    0.64  0.060 / 0.060
G12     314.1          25.7                4.4 +/-    1.20       8.4 +/-    1.20  0.070 / 0.160
G17     50.9           36.5                4.3 +/-    1.85       6.6 +/-    1.85  0.080 / 0.170
G19     27.2           55.4                5.6 +/-    1.95       6.6 +/-    1.95  0.070 / 0.030
G24     275.0          43.2                8.1 +/-    2.16      11.3 +/-    2.16  0.040 / 0.040
G28     114.8          23.5                8.1 +/-    0.86      16.4 +/-    0.86  0.110 / 0.140