PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-16:28:00
G01     47.5           23.4                7.0 +/-    0.91      14.1 +/-    0.91  0.030 / 0.060
G06     176.9          26.8                9.9 +/-    1.07      18.6 +/-    1.07  0.030 / 0.060
G11     44.0           13.2                6.8 +/-    2.11      17.6 +/-    2.11  0.130 / 0.230
G13     246.9          29.7                9.2 +/-    1.39      16.2 +/-    1.39  0.130 / 0.250
G15     280.9          15.3                8.2 +/-    1.62      20.2 +/-    1.62  0.080 / 0.140
G17     314.6          78.1                9.5 +/-    0.64       9.7 +/-    0.64  0.090 / 0.140
G19     250.6          63.0                9.9 +/-    0.41      11.0 +/-    0.41  0.040 / 0.030
G28     48.0           55.5                8.3 +/-    0.42       9.8 +/-    0.42  0.030 / 0.030
G30     150.2          36.9               11.1 +/-    0.86      17.0 +/-    0.86  0.040 / 0.050