PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-23:57:30
G10     243.0          19.9               13.4 +/-    3.54      29.6 +/-    3.54  0.050 / 0.060
G13     63.4           34.2                8.6 +/-    1.26      13.8 +/-    1.26  0.060 / 0.050
G15     111.0          57.4               12.2 +/-    0.56      14.1 +/-    0.56  0.130 / 0.350
G16     303.7          15.6                7.1 +/-    1.16      17.4 +/-    1.16  0.100 / 0.380
G20     251.1          27.1               13.3 +/-    3.19      24.8 +/-    3.19  0.080 / 0.130
G21     322.0          52.9               10.1 +/-    0.59      12.3 +/-    0.59  0.070 / 0.100
G26     275.6          19.0                8.9 +/-    0.93      20.0 +/-    0.93  0.030 / 0.040
G29     162.1          62.1               10.9 +/-    0.53      12.1 +/-    0.53  0.030 / 0.040