PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:58:00
G10     252.3          28.1               11.1 +/-    2.02      20.3 +/-    2.02  0.100 / 0.250
G13     51.8           28.7                7.9 +/-    1.23      14.3 +/-    1.23  0.100 / 0.310
G15     84.8           57.9                9.8 +/-    0.73      11.3 +/-    0.73  0.040 / 0.050
G16     292.5          15.6                7.0 +/-    1.78      17.2 +/-    1.78  0.030 / 0.040
G20     268.7          47.6                9.5 +/-    3.05      12.4 +/-    3.05  0.100 / 0.160
G21     335.1          61.0                8.1 +/-    0.43       9.1 +/-    0.43  0.090 / 0.160
G26     264.4          14.8               10.4 +/-    1.14      25.9 +/-    1.14  0.030 / 0.030
G29     165.8          48.6               10.5 +/-    0.69      13.5 +/-    0.69  0.030 / 0.030