PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-19:27:50
G01     112.9          21.5               11.9 +/-    1.48      25.2 +/-    1.48  0.030 / 0.040
G07     100.9          57.2               12.4 +/-    0.86      14.4 +/-    0.86  0.040 / 0.030
G08     42.7           25.1               10.9 +/-    1.85      21.1 +/-    1.85  0.130 / 0.250
G09     176.6          21.0               11.7 +/-    1.16      25.2 +/-    1.16  0.170 / 0.230
G11     96.3           42.3               11.9 +/-    0.78      16.7 +/-    0.78  0.040 / 0.060
G13     313.9          25.0               10.5 +/-    1.54      20.5 +/-    1.54  0.040 / 0.050
G17     202.5          31.8               13.4 +/-    1.02      22.7 +/-    1.02  0.030 / 0.030
G18     85.0           22.5               10.6 +/-    2.17      22.0 +/-    2.17  0.030 / 0.030
G28     297.2          57.2               11.0 +/-    1.04      12.8 +/-    1.04  0.090 / 0.210
G30     4.9            74.7               11.8 +/-    0.75      12.2 +/-    0.75  0.210 / 0.250