PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-14:43:00
G03     233.0          70.0                9.0 +/-    0.30       9.6 +/-    0.30  0.030 / 0.040
G09     301.1          14.9                5.9 +/-    2.29      14.7 +/-    2.29  0.040 / 0.040
G14     97.2           15.7                9.3 +/-    1.17      22.9 +/-    1.17  0.090 / 0.290
G16     139.3          54.6               10.9 +/-    0.60      13.0 +/-    0.60  0.120 / 0.220
G22     190.8          55.1               10.2 +/-    0.79      12.1 +/-    0.79  0.190 / 0.340
G23     316.6          46.4                7.6 +/-    1.28      10.0 +/-    1.28  0.130 / 0.340
G26     78.8           54.9                8.0 +/-    0.90       9.5 +/-    0.90  0.050 / 0.050
G31     50.5           22.9                7.0 +/-    3.27      14.3 +/-    3.27  0.060 / 0.050