PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-02:12:30
G02     33.5           55.2                8.2 +/-    0.94       9.7 +/-    0.94  0.030 / 0.020
G05     137.4          61.8               11.7 +/-    0.81      13.0 +/-    0.81  0.030 / 0.020
G06     53.4           16.3                6.1 +/-    1.16      14.8 +/-    1.16  0.040 / 0.020
G12     200.5          68.9                8.3 +/-    0.90       8.8 +/-    0.90  0.040 / 0.020
G19     99.0           11.3                8.5 +/-    1.51      22.9 +/-    1.51  0.040 / 0.030
G25     299.2          52.1                9.0 +/-    1.01      11.0 +/-    1.01  0.050 / 0.020
G29     306.4          26.7                7.0 +/-    1.60      13.1 +/-    1.60  0.040 / 0.060