PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-15:57:40
G02     223.0          64.0              -14.9 +/-    1.06     -16.4 +/-    1.06  0.050 / 0.090
G06     46.5           67.8               11.0 +/-    0.39      11.8 +/-    0.39  0.080 / 0.070
G12     319.7          41.3                9.5 +/-    0.63      13.5 +/-    0.63  0.070 / 0.090
G17     60.0           31.4                8.2 +/-    1.41      13.9 +/-    1.41  0.060 / 0.110
G19     47.5           43.6                9.1 +/-    1.30      12.5 +/-    1.30  0.030 / 0.040
G24     258.0          39.3               11.2 +/-    2.94      16.4 +/-    2.94  0.030 / 0.030
G28     125.0          14.6                9.8 +/-    1.96      24.5 +/-    1.96  0.070 / 0.060