PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/23-02:42:50
G02     204.3          39.7                6.6 +/-    1.46       9.6 +/-    1.46  0.080 / 0.080
G06     166.9          69.8                4.6 +/-    0.40       4.9 +/-    0.40  0.060 / 0.070
G12     308.8          16.5                1.4 +/-    3.53       3.3 +/-    3.53  0.210 / 0.260
G17     41.4           44.3                3.4 +/-    1.81       4.7 +/-    1.81  0.170 / 0.230
G19     7.9            63.1                4.0 +/-    0.61       4.4 +/-    0.61  0.070 / 0.100
G24     290.3          41.5                3.9 +/-    4.80       5.5 +/-    4.80  0.050 / 0.100
G28     104.7          31.3                5.3 +/-    1.56       9.0 +/-    1.56  0.040 / 0.030