PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-08:58:10
G02     24.6           63.2                1.7 +/-    0.71       1.9 +/-    0.71  0.030 / 0.050
G05     152.8          51.6                7.5 +/-    0.57       9.3 +/-    0.57  0.030 / 0.040
G06     46.9           28.7                0.3 +/-    0.46       0.6 +/-    0.46  0.130 / 0.320
G12     240.9          78.3                3.0 +/-    0.64       3.0 +/-    0.64  0.140 / 0.270
G19     91.1           16.1                5.4 +/-    1.60      13.0 +/-    1.60  0.030 / 0.030
G20     199.4          12.0               -0.6 +/-   14.00      -1.5 +/-   14.00  0.020 / 0.030
G24     216.8          11.0                3.3 +/-    2.61       9.0 +/-    2.61  0.310 / 0.510
G25     310.0          44.4                1.1 +/-    2.90       1.5 +/-    2.90  0.210 / 0.410
G29     300.3          22.0                3.0 +/-    1.61       6.2 +/-    1.61  0.040 / 0.080