PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-20:28:10
G01     91.5           31.1               13.5 +/-    0.89      23.2 +/-    0.89  0.050 / 0.040
G07     125.0          40.9               13.4 +/-    0.77      19.2 +/-    0.77  0.080 / 0.050
G11     68.7           40.0               11.6 +/-    1.47      16.9 +/-    1.47  0.030 / 0.060
G13     295.7          36.3               13.7 +/-    2.32      21.2 +/-    2.32  0.040 / 0.060
G17     212.3          53.1               13.5 +/-    0.58      16.4 +/-    0.58  0.030 / 0.020
G18     62.9           23.0               10.1 +/-    0.92      20.7 +/-    0.92  0.030 / 0.020
G19     213.3          25.8               14.9 +/-    2.81      28.6 +/-    2.81  0.090 / 0.150
G28     336.7          61.5               11.2 +/-    0.82      12.6 +/-    0.82  0.130 / 0.160
G30     101.8          76.0               13.3 +/-    0.83      13.7 +/-    0.83  0.080 / 0.100