PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-01:42:50
G02     32.8           55.9                9.9 +/-    0.83      11.7 +/-    0.83  0.030 / 0.030
G05     138.6          61.3               12.2 +/-    0.87      13.7 +/-    0.87  0.040 / 0.070
G06     53.1           16.6                7.9 +/-    1.80      18.9 +/-    1.80  0.140 / 0.200
G12     200.8          69.4               12.4 +/-    0.34      13.1 +/-    0.34  0.330 / 0.340
G19     98.4           11.8               10.5 +/-    3.23      28.3 +/-    3.23  0.040 / 0.030
G25     299.9          51.7               11.3 +/-    1.35      14.0 +/-    1.35  0.030 / 0.040
G29     305.9          26.2                9.2 +/-    0.70      17.6 +/-    0.70  0.040 / 0.060