PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-01:28:00
G02     55.8           35.2               10.2 +/-    1.64      16.1 +/-    1.64  0.040 / 0.040
G05     64.8           63.8               11.3 +/-    0.53      12.4 +/-    0.53  0.040 / 0.080
G12     187.3          40.2               13.8 +/-    1.86      20.0 +/-    1.86  0.180 / 0.370
G13     130.8          11.7               13.8 +/-    2.05      37.0 +/-    2.05  0.160 / 0.250
G21     268.0          14.9                8.9 +/-    2.28      22.2 +/-    2.28  0.080 / 0.100
G25     244.1          55.1               11.1 +/-    0.82      13.3 +/-    0.82  0.050 / 0.090
G29     328.1          53.0               11.8 +/-    1.49      14.3 +/-    1.49  0.200 / 0.340