PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-16:42:50
G01     100.1          28.1               10.6 +/-    0.58      19.4 +/-    0.58  0.050 / 0.060
G07     117.2          48.0               10.5 +/-    0.55      13.6 +/-    0.55  0.050 / 0.070
G08     41.6           15.9                7.0 +/-    0.70      17.0 +/-    0.70  0.040 / 0.060
G11     79.4           42.8                9.6 +/-    0.79      13.3 +/-    0.79  0.030 / 0.060
G13     303.9          33.0                9.0 +/-    2.79      14.9 +/-    2.79  0.070 / 0.150
G17     207.9          43.0               14.0 +/-    1.32      19.5 +/-    1.32  0.060 / 0.120
G18     72.2           24.3                9.2 +/-    0.42      18.3 +/-    0.42  0.050 / 0.090
G28     319.1          60.2               10.4 +/-    0.76      11.8 +/-    0.76  0.040 / 0.080
G30     73.4           78.3               10.8 +/-    0.85      11.0 +/-    0.85  0.110 / 0.160