PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-18:13:10
G02     241.5          74.3                9.7 +/-    0.92      10.0 +/-    0.92  0.080 / 0.230
G05     171.7          16.6               12.5 +/-    0.91      30.0 +/-    0.91  0.120 / 0.190
G06     40.8           55.6                9.5 +/-    0.30      11.2 +/-    0.30  0.030 / 0.060
G12     322.7          56.8                7.1 +/-    1.43       8.3 +/-    1.43  0.040 / 0.060
G17     71.9           21.3                6.8 +/-    1.26      14.4 +/-    1.26  0.040 / 0.040
G19     55.3           40.8                8.4 +/-    1.09      12.0 +/-    1.09  0.030 / 0.040
G24     242.7          34.2               13.1 +/-    0.94      21.1 +/-    0.94  0.160 / 0.250
G25     316.8          13.4                9.4 +/-    1.35      24.3 +/-    1.35  0.080 / 0.220