PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-07:28:10
G02     217.6          65.1                9.0 +/-    1.94       9.8 +/-    1.94  0.040 / 0.040
G06     53.3           72.4                7.7 +/-    0.63       8.0 +/-    0.63  0.040 / 0.050
G12     319.2          39.7                5.9 +/-    1.79       8.6 +/-    1.79  0.090 / 0.080
G17     59.0           30.2                5.4 +/-    0.73       9.5 +/-    0.73  0.080 / 0.090
G19     43.4           46.0                5.2 +/-    0.75       6.9 +/-    0.75  0.080 / 0.180
G24     264.1          40.5                9.2 +/-    1.60      13.2 +/-    1.60  0.090 / 0.210
G28     121.5          20.2                9.7 +/-    0.76      21.3 +/-    0.76  0.050 / 0.080