PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-23:57:50
G02     201.9          31.6               10.2 +/-    1.15      17.2 +/-    1.15  0.080 / 0.090
G06     170.8          62.0               10.1 +/-    0.54      11.3 +/-    0.54  0.140 / 0.090
G17     33.7           50.8                7.8 +/-    0.97       9.7 +/-    0.97  0.050 / 0.080
G19     352.1          67.4                8.3 +/-    1.07       8.9 +/-    1.07  0.050 / 0.080
G24     300.2          37.3                8.6 +/-    1.21      13.0 +/-    1.21  0.040 / 0.030
G28     96.4           37.0               10.1 +/-    0.87      15.5 +/-    0.87  0.040 / 0.030