PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-22:13:10
G02     58.3           34.2                9.5 +/-    2.03      15.2 +/-    2.03  0.030 / 0.040
G05     59.0           61.5                9.0 +/-    0.41      10.1 +/-    0.41  0.030 / 0.060
G12     182.7          31.1               12.9 +/-    1.76      22.1 +/-    1.76  0.170 / 0.360
G13     128.6          14.7               12.7 +/-    1.86      31.7 +/-    1.86  0.150 / 0.430
G15     165.9          10.6               -4.5 +/-   26.06     -12.5 +/-   26.06  0.090 / 0.080
G21     270.4          16.0               14.3 +/-    2.04      34.7 +/-    2.04  0.070 / 0.060
G25     237.3          52.4               11.6 +/-    4.02      14.2 +/-    4.02  0.170 / 0.310
G29     326.9          52.7               10.9 +/-    1.49      13.3 +/-    1.49  0.210 / 0.410