PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-16:57:50
G02     205.1          37.9               11.9 +/-    0.68      17.9 +/-    0.68  0.080 / 0.130
G06     149.8          73.4               12.0 +/-    0.61      12.5 +/-    0.61  0.060 / 0.140
G12     308.9          17.4               10.0 +/-    2.42      23.5 +/-    2.42  0.060 / 0.090
G17     37.3           48.2                9.2 +/-    1.01      11.8 +/-    1.01  0.060 / 0.080
G19     12.4           61.9               10.1 +/-    0.75      11.3 +/-    0.75  0.080 / 0.160
G24     293.0          39.5               11.6 +/-    5.43      17.0 +/-    5.43  0.080 / 0.160
G28     103.7          33.4               10.6 +/-    0.77      17.4 +/-    0.77  0.050 / 0.050