PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-16:58:00
G01     248.9          34.8               10.7 +/-    1.79      17.0 +/-    1.79  0.050 / 0.080
G03     315.8          47.2                8.8 +/-    1.24      11.5 +/-    1.24  0.050 / 0.080
G11     234.7          10.7                8.5 +/-    2.93      23.3 +/-    2.93  0.250 / 0.340
G14     62.3           39.1                9.0 +/-    0.87      13.3 +/-    0.87  0.140 / 0.380
G18     215.8          24.8               10.4 +/-    2.28      20.5 +/-    2.28  0.170 / 0.110
G22     300.7          69.3                9.3 +/-    1.01       9.9 +/-    1.01  0.100 / 0.110
G23     287.2          19.0                8.2 +/-    1.61      18.4 +/-    1.61  0.070 / 0.090
G26     141.9          37.2               11.4 +/-    1.02      17.3 +/-    1.02  0.070 / 0.100
G31     40.4           60.9               10.4 +/-    0.75      11.7 +/-    0.75  0.050 / 0.080
G32     77.0           24.5               10.8 +/-    1.19      21.3 +/-    1.19  0.050 / 0.080