PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-03:28:10
G08     295.8          22.7               10.2 +/-    0.90      21.1 +/-    0.90  0.050 / 0.090
G10     2.3            62.9                8.5 +/-    0.77       9.4 +/-    0.77  0.060 / 0.090
G14     227.7          41.9               12.8 +/-    2.20      18.1 +/-    2.20  0.040 / 0.060
G20     36.0           63.6               11.2 +/-    0.68      12.4 +/-    0.68  0.040 / 0.060
G21     145.4          43.7               10.9 +/-    0.79      14.9 +/-    0.79  0.160 / 0.130
G24     57.3           25.8                8.9 +/-    1.71      17.1 +/-    1.71  0.180 / 0.140
G27     257.1          32.8               10.5 +/-    2.07      17.4 +/-    2.07  0.090 / 0.100
G32     242.8          67.8                9.6 +/-    0.64      10.3 +/-    0.64  0.050 / 0.120