PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-16:27:30
G03     264.0          71.9               12.4 +/-    0.75      12.9 +/-    0.75  0.140 / 0.200
G14     89.1           24.0               11.3 +/-    1.91      22.6 +/-    1.91  0.120 / 0.190
G16     142.3          49.3               13.5 +/-    0.60      17.1 +/-    0.60  0.050 / 0.070
G22     200.5          65.4               12.4 +/-    0.35      13.5 +/-    0.35  0.050 / 0.070
G23     312.3          42.8               10.7 +/-    0.87      14.9 +/-    0.87  0.030 / 0.040
G26     87.5           54.0               12.7 +/-    0.86      15.3 +/-    0.86  0.030 / 0.040
G31     47.2           27.5                8.1 +/-    1.78      15.0 +/-    1.78  0.050 / 0.040