PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-13:57:40
G02     227.2          67.3                5.7 +/-    0.76       6.2 +/-    0.76  0.120 / 0.470
G06     43.7           64.3                5.9 +/-    0.39       6.5 +/-    0.39  0.120 / 0.510
G12     320.7          45.5                4.0 +/-    1.13       5.3 +/-    1.13  0.050 / 0.090
G17     63.5           28.2                4.6 +/-    0.95       8.3 +/-    0.95  0.060 / 0.110
G19     51.0           41.4                5.9 +/-    0.69       8.4 +/-    0.69  0.050 / 0.120
G24     254.6          38.0                7.0 +/-    1.08      10.5 +/-    1.08  0.050 / 0.130
G28     126.9          12.7                8.8 +/-    4.15      23.2 +/-    4.15  0.050 / 0.070