PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-02:43:10
G02     33.1           55.7                8.9 +/-    1.01      10.5 +/-    1.01  0.190 / 0.210
G05     138.7          61.2               10.3 +/-    0.83      11.5 +/-    0.83  0.120 / 0.180
G06     52.9           17.1                6.8 +/-    2.62      16.2 +/-    2.62  0.030 / 0.030
G12     202.4          69.9                9.2 +/-    0.31       9.8 +/-    0.31  0.030 / 0.020
G19     98.4           11.6                8.0 +/-    2.25      21.7 +/-    2.25  0.030 / 0.030
G25     300.3          51.5                9.8 +/-    1.61      12.1 +/-    1.61  0.030 / 0.030
G29     305.9          26.3                9.7 +/-    0.76      18.5 +/-    0.76  0.050 / 0.060