PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-19:42:40
G01     318.8          18.2                9.4 +/-    1.68      21.6 +/-    1.68  0.100 / 0.370
G08     257.1          12.9               11.0 +/-    0.95      28.8 +/-    0.95  0.110 / 0.190
G10     79.9           53.6                9.2 +/-    0.82      11.1 +/-    0.82  0.150 / 0.220
G11     303.2          23.0                9.2 +/-    2.13      18.8 +/-    2.13  0.040 / 0.060
G14     299.1          70.8               11.0 +/-    0.57      11.6 +/-    0.57  0.040 / 0.070
G18     102.9          27.3               10.1 +/-    1.23      18.7 +/-    1.23  0.070 / 0.050
G22     300.6          10.3               -1.3 +/-    5.89      -3.7 +/-    5.89  0.070 / 0.050
G31     177.6          41.0               14.7 +/-    0.72      21.1 +/-    0.72  0.030 / 0.030
G32     5.9            67.7               10.6 +/-    0.83      11.4 +/-    0.83  0.030 / 0.030