PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-21:12:30
G03     233.1          67.6               11.4 +/-    0.75      12.2 +/-    0.75  0.050 / 0.040
G09     303.5          17.7                9.9 +/-    0.91      22.9 +/-    0.91  0.050 / 0.050
G14     100.1          14.6               12.7 +/-    1.98      31.9 +/-    1.98  0.210 / 0.170
G16     129.7          59.3               14.0 +/-    0.42      16.0 +/-    0.42  0.240 / 0.320
G22     194.3          54.9               12.5 +/-    0.59      14.9 +/-    0.59  0.030 / 0.040
G23     319.9          49.8               10.8 +/-    0.40      13.7 +/-    0.40  0.030 / 0.040
G26     68.8           51.8                9.7 +/-    0.82      12.0 +/-    0.82  0.120 / 0.170
G31     52.4           19.6                8.6 +/-    3.96      19.1 +/-    3.96  0.090 / 0.160