PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-14:57:40
G02     228.8          67.3                5.9 +/-    0.66       6.4 +/-    0.66  0.060 / 0.100
G05     174.9          10.3               -8.7 +/-    8.63     -24.0 +/-    8.63  0.070 / 0.100
G06     42.9           63.2                6.8 +/-    0.52       7.5 +/-    0.52  0.070 / 0.070
G12     320.8          46.1                7.7 +/-    0.39      10.2 +/-    0.39  0.060 / 0.070
G17     64.1           28.1                6.1 +/-    2.42      11.1 +/-    2.42  0.070 / 0.120
G19     52.1           40.7                7.4 +/-    1.26      10.7 +/-    1.26  0.050 / 0.100
G24     252.9          37.5                9.6 +/-    1.28      14.6 +/-    1.28  0.050 / 0.050
G28     127.7          11.5                6.8 +/-    2.17      18.3 +/-    2.17  0.040 / 0.040