PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-18:13:10
G02     233.3          71.1               11.3 +/-    0.33      11.9 +/-    0.33  0.270 / 0.240
G05     173.1          13.5               16.2 +/-    3.30      41.8 +/-    3.30  0.190 / 0.210
G06     41.8           59.3               11.4 +/-    0.61      13.1 +/-    0.61  0.150 / 0.190
G12     322.6          52.9               10.2 +/-    0.42      12.4 +/-    0.42  0.150 / 0.170
G17     68.8           23.6               11.4 +/-    1.89      23.0 +/-    1.89  0.030 / 0.050
G19     51.4           43.1               12.1 +/-    1.97      16.7 +/-    1.97  0.040 / 0.060
G24     246.7          36.3               12.7 +/-    1.72      19.7 +/-    1.72  0.050 / 0.030