PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-01:12:30
G02     32.2           55.8                8.4 +/-    0.97       9.9 +/-    0.97  0.050 / 0.050
G05     139.3          61.1               11.5 +/-    0.64      12.9 +/-    0.64  0.060 / 0.050
G06     51.8           19.2                7.8 +/-    2.24      17.4 +/-    2.24  0.020 / 0.030
G12     208.3          71.6               11.0 +/-    0.32      11.6 +/-    0.32  0.030 / 0.030
G19     98.5           10.1               12.8 +/-    2.25      35.5 +/-    2.25  0.030 / 0.030
G25     298.7          52.9                7.9 +/-    1.76       9.6 +/-    1.76  0.030 / 0.030
G29     307.9          30.1                8.6 +/-    0.67      15.1 +/-    0.67  0.090 / 0.170