PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-02:28:10
G02     220.7          66.0                6.1 +/-    1.16       6.6 +/-    1.16  0.050 / 0.060
G06     52.4           75.8                3.8 +/-    0.89       3.9 +/-    0.89  0.040 / 0.060
G12     318.9          37.8                2.5 +/-    1.31       3.8 +/-    1.31  0.150 / 0.570
G17     62.0           27.8                2.0 +/-    0.82       3.6 +/-    0.82  0.160 / 0.480
G19     44.0           46.4                2.9 +/-    1.07       3.8 +/-    1.07  0.060 / 0.090
G24     256.2          40.4                6.1 +/-    0.81       8.8 +/-    0.81  0.060 / 0.090
G28     124.7          13.3                6.9 +/-    2.15      17.9 +/-    2.15  0.040 / 0.050