PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-18:12:30
G02     216.4          58.3               11.4 +/-    0.74      13.2 +/-    0.74  0.040 / 0.080
G06     55.8           72.5               10.8 +/-    1.08      11.2 +/-    1.08  0.040 / 0.080
G12     319.6          39.5                8.7 +/-    0.61      12.8 +/-    0.61  0.120 / 0.340
G17     57.5           32.2                8.1 +/-    0.79      13.6 +/-    0.79  0.110 / 0.460
G19     35.8           51.5                8.1 +/-    0.51      10.0 +/-    0.51  0.040 / 0.060
G24     263.6          41.8               11.4 +/-    1.90      16.0 +/-    1.90  0.040 / 0.070
G28     122.6          13.8               11.2 +/-    1.52      28.8 +/-    1.52  0.070 / 0.100