PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-22:27:50
G02     60.4           32.5                8.8 +/-    2.23      14.7 +/-    2.23  0.030 / 0.050
G05     55.6           59.3               10.0 +/-    0.59      11.4 +/-    0.59  0.040 / 0.040
G12     182.3          28.4               12.1 +/-    1.59      21.9 +/-    1.59  0.150 / 0.200
G13     126.6          16.4               12.5 +/-    2.65      30.0 +/-    2.65  0.110 / 0.210
G15     164.4          12.7               15.4 +/-    3.86      40.4 +/-    3.86  0.090 / 0.070
G21     272.5          17.6               13.8 +/-    2.52      32.3 +/-    2.52  0.070 / 0.090
G25     233.7          50.5               11.7 +/-    2.86      14.7 +/-    2.86  0.090 / 0.400
G29     328.6          55.1               10.5 +/-    0.75      12.5 +/-    0.75  0.120 / 0.280