PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-19:43:00
G07     53.4           67.7               10.2 +/-    0.70      10.9 +/-    0.70  0.040 / 0.040
G08     53.6           41.9                8.8 +/-    0.98      12.5 +/-    0.98  0.040 / 0.030
G09     179.3          42.2               12.3 +/-    0.81      17.3 +/-    0.81  0.140 / 0.200
G11     121.5          33.3               12.5 +/-    0.95      20.5 +/-    0.95  0.090 / 0.200
G17     198.7          11.3                2.5 +/-   27.67       6.8 +/-   27.67  0.110 / 0.190
G18     105.3          14.3               12.3 +/-    1.84      31.0 +/-    1.84  0.080 / 0.140
G23     160.9          12.8               12.3 +/-    1.79      32.4 +/-    1.79  0.090 / 0.040
G27     38.5           12.7                7.2 +/-    1.74      18.9 +/-    1.74  0.080 / 0.070
G28     265.3          46.9               10.4 +/-    4.83      13.7 +/-    4.83  0.040 / 0.040
G30     328.6          57.6                9.7 +/-    0.45      11.3 +/-    0.45  0.030 / 0.030