PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-19:27:30
G03     243.4          70.1               11.5 +/-    0.61      12.2 +/-    0.61  0.120 / 0.340
G09     300.6          14.1                8.2 +/-    1.83      20.9 +/-    1.83  0.110 / 0.340
G14     95.9           18.2               11.5 +/-    1.11      26.3 +/-    1.11  0.070 / 0.040
G16     135.6          55.5               13.6 +/-    0.75      16.1 +/-    0.75  0.050 / 0.050
G22     196.7          59.3               12.2 +/-    1.02      13.9 +/-    1.02  0.070 / 0.140
G23     316.7          46.7                9.5 +/-    1.21      12.5 +/-    1.21  0.070 / 0.150
G26     75.8           53.2               10.4 +/-    0.79      12.6 +/-    0.79  0.030 / 0.030
G31     50.2           22.6                8.6 +/-    0.61      17.7 +/-    0.61  0.030 / 0.040