PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-01:58:10
G01     319.3          16.8                7.2 +/-    1.47      17.1 +/-    1.47  0.150 / 0.250
G08     257.1          13.9               10.6 +/-    1.39      27.2 +/-    1.39  0.120 / 0.200
G10     76.4           54.9                8.7 +/-    0.71      10.4 +/-    0.71  0.030 / 0.030
G11     303.1          23.9                8.8 +/-    1.13      17.6 +/-    1.13  0.030 / 0.030
G14     296.9          71.2                9.7 +/-    0.68      10.2 +/-    0.68  0.060 / 0.060
G18     100.2          30.5                9.9 +/-    0.95      17.2 +/-    0.95  0.060 / 0.050
G31     178.0          38.8               12.6 +/-    1.55      18.7 +/-    1.55  0.050 / 0.080
G32     357.3          69.8                8.8 +/-    0.58       9.3 +/-    0.58  0.050 / 0.080