PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-17:42:50
G02     32.7           55.6                8.7 +/-    1.53      10.3 +/-    1.53  0.030 / 0.040
G05     135.2          64.5               11.2 +/-    0.32      12.3 +/-    0.32  0.020 / 0.040
G06     56.2           11.3                8.5 +/-    1.79      23.0 +/-    1.79  0.050 / 0.040
G12     186.5          60.2                9.4 +/-    0.58      10.7 +/-    0.58  0.030 / 0.030
G19     101.2          11.0               10.5 +/-    2.83      28.7 +/-    2.83  0.030 / 0.040
G25     290.4          56.3                5.3 +/-    2.48       6.3 +/-    2.48  0.040 / 0.040
G29     308.8          29.0                8.9 +/-    0.95      15.9 +/-    0.95  0.140 / 0.180