PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-14:27:30
G02     203.4          29.6                9.8 +/-    2.01      17.2 +/-    2.01  0.160 / 0.300
G06     160.0          67.0                7.6 +/-    0.30       8.2 +/-    0.30  0.220 / 0.240
G12     305.5          13.2                7.1 +/-    1.71      18.4 +/-    1.71  0.070 / 0.040
G17     29.8           53.8                7.1 +/-    1.25       8.6 +/-    1.25  0.060 / 0.040
G19     360.0          66.0                6.8 +/-    0.57       7.4 +/-    0.57  0.100 / 0.110
G24     300.7          36.1                8.9 +/-    1.75      13.8 +/-    1.75  0.090 / 0.110
G28     96.4           38.3                7.4 +/-    0.75      11.0 +/-    0.75  0.030 / 0.030