PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-18:42:50
G02     242.2          74.7               10.7 +/-    0.47      11.1 +/-    0.47  0.130 / 0.160
G05     171.5          16.9               12.9 +/-    1.33      30.7 +/-    1.33  0.070 / 0.130
G06     40.7           55.5                9.9 +/-    0.52      11.7 +/-    0.52  0.030 / 0.060
G12     322.6          56.7                9.5 +/-    0.94      11.1 +/-    0.94  0.030 / 0.050
G17     71.9           21.5                8.7 +/-    1.19      18.4 +/-    1.19  0.080 / 0.250
G19     55.6           40.6               10.5 +/-    0.46      15.1 +/-    0.46  0.090 / 0.250
G24     242.7          34.1               13.2 +/-    1.02      21.3 +/-    1.02  0.040 / 0.040
G25     316.8          13.4                9.3 +/-    1.15      24.0 +/-    1.15  0.040 / 0.040