PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-10:12:40
G02     24.5           63.2                4.5 +/-    0.91       5.0 +/-    0.91  0.040 / 0.020
G05     153.4          51.5                7.1 +/-    0.84       8.8 +/-    0.84  0.030 / 0.030
G06     46.6           29.6                4.2 +/-    1.76       7.4 +/-    1.76  0.020 / 0.030
G12     240.1          78.2                6.6 +/-    0.30       6.7 +/-    0.30  0.020 / 0.030
G19     91.4           15.8                6.7 +/-    1.56      16.3 +/-    1.56  0.120 / 0.340
G20     199.1          12.8                1.4 +/-    3.80       3.7 +/-    3.80  0.110 / 0.650
G24     216.9          10.9                0.2 +/-   19.85       0.4 +/-   19.85  0.040 / 0.040
G25     309.7          44.8                5.9 +/-    0.92       8.0 +/-    0.92  0.030 / 0.030
G29     300.8          22.8                5.0 +/-    2.01      10.3 +/-    2.01  0.090 / 0.110