PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-22:58:10
G01     39.5           13.7                9.0 +/-    2.93      23.1 +/-    2.93  0.120 / 0.260
G02     199.0          12.6               25.0 +/-    4.07      65.9 +/-    4.07  0.100 / 0.240
G06     174.0          43.3               17.7 +/-    1.04      24.5 +/-    1.04  0.170 / 0.230
G13     235.0          19.6               17.7 +/-    3.16      39.3 +/-    3.16  0.310 / 0.240
G15     267.5          11.0               14.7 +/-    1.27      40.1 +/-    1.27  0.080 / 0.070
G19     287.2          69.9               13.5 +/-    0.45      14.2 +/-    0.45  0.050 / 0.050
G24     315.3          22.1               12.3 +/-    3.24      25.8 +/-    3.24  0.120 / 0.260
G28     76.8           44.7               12.6 +/-    1.16      17.1 +/-    1.16  0.280 / 0.140
G30     155.0          22.3               17.0 +/-    1.45      35.3 +/-    1.45  0.090 / 0.140