PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/06-17:27:20
G01     226.7          17.2                9.6 +/-    0.81      22.6 +/-    0.81  0.040 / 0.040
G03     279.0          70.8               10.2 +/-    0.89      10.8 +/-    0.89  0.050 / 0.040
G14     85.6           26.1                8.8 +/-    1.94      16.7 +/-    1.94  0.240 / 0.190
G16     147.1          44.9               11.7 +/-    1.28      15.8 +/-    1.28  0.120 / 0.140
G22     210.0          70.0               10.8 +/-    0.52      11.5 +/-    0.52  0.130 / 0.120
G23     308.4          39.0                8.0 +/-    1.11      11.8 +/-    1.11  0.060 / 0.100
G31     45.4           31.4                7.6 +/-    1.51      12.9 +/-    1.51  0.050 / 0.080