PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-21:57:50
G01     92.2           31.0               10.9 +/-    0.81      18.8 +/-    0.81  0.040 / 0.060
G07     124.5          42.2               11.0 +/-    1.28      15.5 +/-    1.28  0.040 / 0.050
G11     69.1           40.0               10.1 +/-    1.15      14.7 +/-    1.15  0.070 / 0.050
G13     296.4          36.1               13.3 +/-    1.81      20.7 +/-    1.81  0.070 / 0.050
G17     211.9          53.2               13.3 +/-    0.62      16.1 +/-    0.62  0.150 / 0.230
G18     62.9           22.9                9.0 +/-    1.13      18.5 +/-    1.13  0.110 / 0.160
G19     213.2          25.0               13.3 +/-    2.26      26.1 +/-    2.26  0.030 / 0.020
G28     336.6          61.6               10.8 +/-    0.49      12.1 +/-    0.49  0.020 / 0.030
G30     98.2           77.0               12.2 +/-    0.42      12.5 +/-    0.42  0.100 / 0.130