PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-14:27:50
G02     330.0          79.2                5.9 +/-    0.47       6.0 +/-    0.47  0.260 / 0.230
G05     166.7          31.0                8.7 +/-    1.82      14.9 +/-    1.82  0.270 / 0.340
G06     41.2           40.0                4.0 +/-    1.17       5.8 +/-    1.17  0.090 / 0.260
G12     313.1          71.1                5.1 +/-    0.73       5.4 +/-    0.73  0.120 / 0.210
G17     83.9           13.5                5.6 +/-    2.14      14.5 +/-    2.14  0.060 / 0.100
G19     74.6           25.9                6.2 +/-    2.29      11.9 +/-    2.29  0.090 / 0.090
G24     230.4          23.5                8.7 +/-    2.23      17.7 +/-    2.23  0.050 / 0.060