PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-20:28:10
G02     53.8           38.2                9.6 +/-    0.90      14.3 +/-    0.90  0.040 / 0.040
G05     68.3           65.7                9.2 +/-    0.56      10.0 +/-    0.56  0.030 / 0.030
G12     182.6          35.4               11.5 +/-    0.72      18.1 +/-    0.72  0.230 / 0.310
G13     132.1          11.5               14.9 +/-    2.27      40.2 +/-    2.27  0.150 / 0.350
G21     266.6          12.9               11.1 +/-    6.81      29.1 +/-    6.81  0.040 / 0.040
G25     244.6          55.4               10.0 +/-    0.77      11.8 +/-    0.77  0.040 / 0.060
G29     323.8          48.0                8.6 +/-    1.01      11.1 +/-    1.01  0.080 / 0.090