PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-14:57:40
G02     221.7          62.1                9.0 +/-    0.93      10.0 +/-    0.93  0.060 / 0.070
G06     47.9           68.8                8.9 +/-    0.69       9.5 +/-    0.69  0.060 / 0.080
G12     319.5          40.6                7.6 +/-    1.57      10.9 +/-    1.57  0.050 / 0.080
G17     59.4           31.6                7.9 +/-    0.98      13.3 +/-    0.98  0.060 / 0.080
G19     46.3           44.3                7.7 +/-    1.10      10.4 +/-    1.10  0.090 / 0.340
G24     259.8          39.7                9.8 +/-    0.83      14.3 +/-    0.83  0.070 / 0.250
G28     124.2          15.8                9.3 +/-    2.38      22.6 +/-    2.38  0.030 / 0.040