PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-01:42:40
G02     32.8           55.9                9.7 +/-    0.82      11.4 +/-    0.82  0.020 / 0.040
G05     138.6          61.3               12.3 +/-    0.89      13.8 +/-    0.89  0.020 / 0.040
G06     53.1           16.6                7.1 +/-    1.57      17.0 +/-    1.57  0.030 / 0.040
G12     200.8          69.4               10.9 +/-    0.85      11.6 +/-    0.85  0.040 / 0.040
G19     98.4           11.8               10.2 +/-    1.47      27.3 +/-    1.47  0.060 / 0.060
G25     299.9          51.7                9.8 +/-    0.47      12.1 +/-    0.47  0.060 / 0.060
G29     305.9          26.2                8.7 +/-    1.62      16.5 +/-    1.62  0.050 / 0.050