PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-16:58:10
G02     244.0          74.5                9.1 +/-    0.93       9.4 +/-    0.93  0.110 / 0.140
G05     171.5          17.5               12.7 +/-    2.05      29.6 +/-    2.05  0.090 / 0.160
G06     40.7           54.0                8.8 +/-    0.54      10.6 +/-    0.54  0.100 / 0.120
G12     322.9          59.0                7.3 +/-    1.39       8.4 +/-    1.39  0.090 / 0.100
G17     73.3           19.8                8.0 +/-    1.55      17.6 +/-    1.55  0.030 / 0.050
G19     56.2           40.4                8.9 +/-    0.75      12.9 +/-    0.75  0.030 / 0.050
G24     241.1          33.4               10.3 +/-    1.47      16.9 +/-    1.47  0.110 / 0.340
G25     317.0          14.8                5.5 +/-    2.20      13.7 +/-    2.20  0.120 / 0.380