PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-22:42:30
G02     65.8           28.2                9.0 +/-    2.59      16.4 +/-    2.59  0.040 / 0.040
G05     49.5           53.2                9.4 +/-    0.82      11.5 +/-    0.82  0.040 / 0.040
G12     181.2          21.7               13.5 +/-    1.16      28.5 +/-    1.16  0.180 / 0.290
G13     121.1          20.9               12.3 +/-    1.65      26.5 +/-    1.65  0.300 / 0.260
G15     160.9          18.0               13.2 +/-    1.54      30.4 +/-    1.54  0.060 / 0.100
G21     277.9          21.7               11.3 +/-    1.90      24.0 +/-    1.90  0.110 / 0.080
G25     225.6          45.3               11.8 +/-    3.01      15.8 +/-    3.01  0.080 / 0.250
G29     332.8          61.7               10.7 +/-    0.59      11.9 +/-    0.59  0.090 / 0.250