PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-20:58:00
G01     97.8           29.2               11.6 +/-    1.07      20.7 +/-    1.07  0.030 / 0.050
G07     119.8          46.0               12.6 +/-    0.89      16.7 +/-    0.89  0.040 / 0.060
G08     41.6           12.2                8.8 +/-    1.89      23.5 +/-    1.89  0.040 / 0.040
G11     75.5           41.7               11.5 +/-    1.50      16.2 +/-    1.50  0.050 / 0.050
G13     301.7          34.0               10.7 +/-    1.80      17.4 +/-    1.80  0.160 / 0.130
G17     208.8          47.7               13.7 +/-    0.92      17.8 +/-    0.92  0.130 / 0.190
G18     68.5           23.7               10.2 +/-    1.08      20.6 +/-    1.08  0.070 / 0.110
G19     211.2          20.6               14.3 +/-    1.59      31.1 +/-    1.59  0.070 / 0.100
G28     326.1          61.0               11.1 +/-    0.89      12.5 +/-    0.89  0.030 / 0.020
G30     75.6           79.1               12.3 +/-    0.88      12.5 +/-    0.88  0.030 / 0.030