PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-01:28:00
G02     201.0          27.8                7.9 +/-    1.21      14.5 +/-    1.21  0.040 / 0.030
G06     174.5          56.6                7.9 +/-    0.67       9.2 +/-    0.67  0.040 / 0.030
G17     30.8           53.2                6.1 +/-    0.97       7.4 +/-    0.97  0.080 / 0.080
G19     340.9          69.2                5.4 +/-    1.02       5.7 +/-    1.02  0.090 / 0.080
G24     303.4          35.6                5.6 +/-    1.58       8.8 +/-    1.58  0.060 / 0.070
G28     92.6           38.9                6.8 +/-    0.86      10.1 +/-    0.86  0.070 / 0.080