PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-10:57:30
G02     212.1          54.8                6.1 +/-    0.46       7.2 +/-    0.46  0.060 / 0.060
G06     74.5           77.3                4.5 +/-    0.36       4.6 +/-    0.36  0.050 / 0.060
G12     316.7          33.3                3.1 +/-    2.17       5.1 +/-    2.17  0.080 / 0.080
G17     51.9           36.3                2.5 +/-    1.15       3.8 +/-    1.15  0.080 / 0.090
G19     34.9           51.1                2.8 +/-    0.68       3.5 +/-    0.68  0.090 / 0.210
G24     274.5          41.5                4.0 +/-    1.47       5.7 +/-    1.47  0.090 / 0.190
G28     116.2          24.6                5.3 +/-    1.36      10.4 +/-    1.36  0.050 / 0.090