PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-17:58:10
G02     54.6           38.1                9.0 +/-    0.80      13.5 +/-    0.80  0.040 / 0.060
G05     66.2           66.1                8.4 +/-    0.40       9.1 +/-    0.40  0.040 / 0.060
G12     182.8          33.4               11.0 +/-    2.64      18.1 +/-    2.64  0.040 / 0.060
G13     130.1          13.1               12.8 +/-    1.68      33.3 +/-    1.68  0.040 / 0.070
G21     269.0          15.3                9.3 +/-    1.53      23.0 +/-    1.53  0.120 / 0.420
G25     237.7          53.7                9.6 +/-    1.44      11.7 +/-    1.44  0.100 / 0.390
G29     325.9          50.9                8.7 +/-    0.72      10.9 +/-    0.72  0.120 / 0.450