PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-18:57:40
G02     218.7          62.1               10.8 +/-    0.58      12.1 +/-    0.58  0.090 / 0.100
G06     52.7           72.5               10.5 +/-    0.84      11.0 +/-    0.84  0.060 / 0.090
G12     318.4          36.4                8.2 +/-    0.76      12.6 +/-    0.76  0.070 / 0.340
G17     57.9           32.3                8.5 +/-    0.77      14.2 +/-    0.77  0.080 / 0.280
G19     43.0           46.5                9.9 +/-    0.68      13.0 +/-    0.68  0.040 / 0.050
G24     262.0          40.7               11.9 +/-    0.68      17.1 +/-    0.68  0.050 / 0.050
G28     122.7          16.7               11.1 +/-    1.10      26.5 +/-    1.10  0.030 / 0.080