PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-18:28:10
G02     62.7           31.9                8.9 +/-    0.36      15.0 +/-    0.36  0.030 / 0.060
G05     52.0           57.8                8.7 +/-    0.43      10.1 +/-    0.43  0.030 / 0.040
G12     181.2          23.3               12.0 +/-    3.10      24.3 +/-    3.10  0.050 / 0.080
G13     122.4          19.6               12.5 +/-    0.97      27.9 +/-    0.97  0.050 / 0.070
G15     164.9          14.7               14.8 +/-    1.28      37.0 +/-    1.28  0.080 / 0.090
G21     276.8          21.2               10.0 +/-    1.59      21.3 +/-    1.59  0.060 / 0.110
G25     225.1          46.3               11.9 +/-    0.80      15.8 +/-    0.80  0.140 / 0.310
G29     332.1          60.2               10.7 +/-    0.70      12.2 +/-    0.70  0.110 / 0.300