PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-08:27:50
G02     345.6          78.1                3.2 +/-    0.80       3.3 +/-    0.80  0.080 / 0.170
G05     165.1          33.3                4.5 +/-    1.64       7.3 +/-    1.64  0.080 / 0.190
G06     40.8           42.2                1.6 +/-    0.67       2.2 +/-    0.67  0.070 / 0.120
G12     311.6          70.4                2.5 +/-    0.76       2.7 +/-    0.76  0.060 / 0.120
G19     74.2           28.4                2.7 +/-    0.98       5.0 +/-    0.98  0.040 / 0.050
G24     224.1          21.3                4.7 +/-    3.50      10.1 +/-    3.50  0.040 / 0.050
G25     316.2          34.5                2.3 +/-    1.61       3.7 +/-    1.61  0.030 / 0.040
G29     287.0          10.8               -3.7 +/-   18.47     -10.1 +/-   18.47  0.040 / 0.030