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                9.2 +/-    0.58      10.9 +/-    0.58  0.050 / 0.050
G05     139.3          61.1               12.4 +/-    1.02      13.9 +/-    1.02  0.040 / 0.070
G06     51.8           19.2                7.8 +/-    0.82      17.6 +/-    0.82  0.040 / 0.050
G12     208.3          71.6               11.7 +/-    0.56      12.2 +/-    0.56  0.040 / 0.050
G19     98.5           10.1               11.9 +/-    1.43      33.2 +/-    1.43  0.030 / 0.040
G25     298.7          52.9                9.3 +/-    0.79      11.3 +/-    0.79  0.030 / 0.040
G29     307.9          30.1                9.2 +/-    0.82      16.1 +/-    0.82  0.030 / 0.040