PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-00:57:50
G03     256.4          69.5                5.4 +/-    1.51       5.7 +/-    1.51  0.040 / 0.030
G09     300.6          14.7                4.2 +/-    2.17      10.6 +/-    2.17  0.030 / 0.030
G14     96.2           16.9                6.1 +/-    2.30      14.4 +/-    2.30  0.040 / 0.050
G16     143.6          53.3               10.0 +/-    0.78      12.1 +/-    0.78  0.040 / 0.050
G22     200.8          61.4                7.9 +/-    0.59       8.8 +/-    0.59  0.190 / 0.110
G23     314.6          44.1                5.0 +/-    0.47       6.9 +/-    0.47  0.110 / 0.140
G26     81.9           55.5                5.7 +/-    0.89       6.8 +/-    0.89  0.110 / 0.260
G31     48.8           26.3                2.8 +/-    3.22       5.3 +/-    3.22  0.120 / 0.280