PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-20:57:30
G02     12.8           69.1                9.0 +/-    0.63       9.5 +/-    0.63  0.170 / 0.400
G05     156.8          46.3               12.9 +/-    0.68      17.0 +/-    0.68  0.170 / 0.450
G06     45.2           29.5                8.4 +/-    0.55      14.8 +/-    0.55  0.050 / 0.100
G12     274.4          78.7                8.9 +/-    0.74       9.0 +/-    0.74  0.050 / 0.100
G19     86.2           18.6                9.1 +/-    1.03      20.8 +/-    1.03  0.050 / 0.040
G24     219.5          14.1               14.7 +/-    2.36      37.4 +/-    2.36  0.040 / 0.040
G25     313.1          39.5                7.7 +/-    1.72      11.3 +/-    1.72  0.030 / 0.030
G29     295.5          17.7                8.8 +/-    1.11      20.6 +/-    1.11  0.020 / 0.030