PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-19:57:40
G02     219.1          62.4               13.4 +/-    0.71      14.9 +/-    0.71  0.080 / 0.080
G06     50.4           70.1               11.9 +/-    0.44      12.6 +/-    0.44  0.070 / 0.090
G12     320.2          41.3               11.9 +/-    0.84      16.9 +/-    0.84  0.050 / 0.090
G17     59.4           31.3               11.5 +/-    0.67      19.7 +/-    0.67  0.050 / 0.070
G19     40.3           49.1               11.8 +/-    0.48      15.0 +/-    0.48  0.080 / 0.490
G24     260.0          40.9               13.9 +/-    1.17      19.9 +/-    1.17  0.110 / 0.490
G28     124.7          11.3               13.0 +/-    3.99      35.4 +/-    3.99  0.070 / 0.080