PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-09:42:50
G02     337.6          79.1                4.0 +/-    0.39       4.1 +/-    0.39  0.110 / 0.180
G05     166.3          31.6                7.1 +/-    0.98      12.1 +/-    0.98  0.120 / 0.200
G06     40.8           42.5                3.0 +/-    0.80       4.2 +/-    0.80  0.030 / 0.030
G12     313.1          69.8                3.0 +/-    1.23       3.2 +/-    1.23  0.030 / 0.030
G19     72.8           29.6                4.4 +/-    0.62       7.8 +/-    0.62  0.070 / 0.110
G24     224.5          22.0                7.7 +/-    2.07      16.2 +/-    2.07  0.080 / 0.130
G25     316.4          34.2                3.5 +/-    2.12       5.7 +/-    2.12  0.040 / 0.050