PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-05:57:40
G02     8.9            72.8                4.0 +/-    0.28       4.2 +/-    0.28  0.040 / 0.060
G05     160.0          40.5                7.2 +/-    0.70      10.4 +/-    0.70  0.040 / 0.060
G06     42.9           36.7                3.9 +/-    1.32       6.0 +/-    1.32  0.020 / 0.030
G12     298.5          75.3                6.9 +/-    0.39       7.2 +/-    0.39  0.020 / 0.030
G19     80.9           23.4                4.9 +/-    2.12       9.9 +/-    2.12  0.050 / 0.050
G24     224.4          18.6                4.4 +/-    2.49      10.0 +/-    2.49  0.130 / 0.040
G25     316.0          33.8                2.9 +/-    1.02       4.7 +/-    1.02  0.080 / 0.080
G29     291.3          13.4                4.0 +/-    2.31      10.4 +/-    2.31  0.070 / 0.100