PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-14:12:50
G03     203.3          54.1                9.7 +/-    0.67      11.6 +/-    0.67  0.080 / 0.080
G07     260.3          22.0               10.3 +/-    3.48      21.7 +/-    3.48  0.070 / 0.110
G09     310.6          28.2                7.3 +/-    1.47      13.2 +/-    1.47  0.030 / 0.040
G16     99.8           65.3               10.0 +/-    0.96      10.8 +/-    0.96  0.050 / 0.040
G22     184.8          36.8                9.0 +/-    2.09      13.8 +/-    2.09  0.040 / 0.050
G23     332.0          61.5                8.1 +/-    0.55       9.1 +/-    0.55  0.030 / 0.050
G26     54.0           44.2                8.2 +/-    1.16      11.2 +/-    1.16  0.190 / 0.300
G27     134.6          10.9                4.9 +/-   22.75      13.4 +/-   22.75  0.280 / 0.320
G31     60.2           9.5                 7.5 +/-    3.31      21.2 +/-    3.31  0.090 / 0.130