PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-02:12:50
G02     54.5           36.3                9.4 +/-    1.56      14.5 +/-    1.56  0.050 / 0.050
G05     68.4           65.0                9.9 +/-    0.70      10.8 +/-    0.70  0.050 / 0.050
G12     187.9          42.3               11.8 +/-    0.70      16.5 +/-    0.70  0.120 / 0.390
G13     132.3          10.5                4.7 +/-   26.92      12.9 +/-   26.92  0.120 / 0.490
G21     266.7          14.2               10.8 +/-    2.89      27.4 +/-    2.89  0.040 / 0.060
G25     246.8          56.0                9.6 +/-    1.95      11.3 +/-    1.95  0.050 / 0.060
G29     327.2          51.8               11.0 +/-    1.01      13.6 +/-    1.01  0.030 / 0.030