PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-19:12:30
G02     215.8          58.3               12.0 +/-    1.15      13.8 +/-    1.15  0.050 / 0.090
G06     57.4           73.3               10.0 +/-    0.46      10.4 +/-    0.46  0.060 / 0.090
G12     319.2          38.2                7.7 +/-    1.04      11.6 +/-    1.04  0.030 / 0.020
G17     56.6           33.2                9.1 +/-    1.88      15.0 +/-    1.88  0.040 / 0.020
G19     35.4           51.6               10.3 +/-    1.49      12.8 +/-    1.49  0.060 / 0.080
G24     264.8          41.9               11.8 +/-    2.53      16.6 +/-    2.53  0.060 / 0.070
G28     122.2          14.2               10.3 +/-    1.93      26.3 +/-    1.93  0.040 / 0.060